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Search results “Dc bus capacitor ripple current test”
Mod-08 Lec-28 DC link current and DC capacitor current in a voltage source inverter
 
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Pulse width Modulation for Power Electronic Converters by Dr. G. Narayanan,Department of Electrical Engineering,IISc Bangalore.For more details on NPTEL visit http://nptel.ac.in
Views: 12190 nptelhrd
Power Tips: Measuring Vout Ripple in DC/DC Converters
 
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The video explains the measurement set-up for the output voltage ripple in DC/DC converters directly at the load with a high frequency bypass capacitor.
Views: 2331 Texas Instruments
Power Tip 21: Watch that capacitor RMS ripple current rating
 
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In this Power Tip Robert Kollman discusses a mistake designers make often and that is putting too much ripple current into a capacitor that may shorten its lifetime.
Views: 4878 Texas Instruments
Fundamentals of Power Electronics - Buck Converter Capacitor Value
 
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Deriving the equation for sizing the output capacitor of a buck converter based on the output voltage ripple. We wear triangle "Q" (for charge) hats to help you remember how to calculate the output capacitor value. *Note: Still working on reducing mic noise. We've got a low-budget setup here. ^^;;
Views: 5556 katkimshow
DC Bus voltage ripple
 
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voltage.
Views: 530 davidtsuinw
EEVblog #594 - How To Measure Power Supply Ripple & Noise
 
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Fundamentals Friday Dave explains what the ripple and noise specifications on a power supply is and how to measure it using different methods on both analog and digital oscilloscopes. From bad techniques through to good, showing the effect of each one. Traps for young players aplenty in this one. How do you detect common mode noise issues and ensure that the signal you are measuring is really coming from your device under test? Single ended & differential measurement, DIY coax solutions, termination, analog vs digital oscilloscopes, bandwidth limiting, and even oscilloscope probe coax construction issues. It's all here. Mysteries of X1 oscilloscope probes revealed: http://www.youtube.com/watch?v=OiAmER1OJh4 How to track down common mode noise: http://www.youtube.com/watch?v=BFLZm4LbzQU Opamp Noise voltage tutorial: https://www.youtube.com/watch?v=Y0jkPLuFdnM Forum: http://www.eevblog.com/forum/blog/eevblog-594-how-to-measure-power-supply-ripple-noise/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 170184 EEVblog
#askLorandt explains: DC/DC Converter Voltage Ripple vs. ESR of Different Capacitor Technologies
 
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Lorandt explains the influence of the ESR on the voltage ripple at the output of a buck converter. For this purpose, he measures the output voltage of three identically constructed buck converters. Only the output capacitor is different on each converter - Aluminum electrolyte, Aluminum polymer or MLCC. Follow #askLorandt on Twitter (@askLorandt), visit his website at http://www.we-online.com/askLorandt and connect with him on LinkedIn: http://de.linkedin.com/in/lorandtfoelkel Check the product catalog regarding capacitors: http://bit.ly/2ngBjRQ Follow us on: Facebook: http://www.we-online.de/facebook/WE_Karriere Facebook: http://www.we-online.de/facebook/WE_eiSos_Group Instagram: http://www.we-online.de/instagram/WE_Karriere Instagram: http://www.we-online.de/instagram/wespeedupthefuture Twitter: http://www.we-online.com/twitter LinkedIn: http://www.we-online.com/linkedin Xing: http://www.we-online.com/xing YouTube: http://www.we-online.com/youtube Newsroom: http://www.we-online.de/newsroom More info about Würth Elektronik eiSos: http://www.we-online.com
Ford P0503 P0720 P0722 - Alternator AC Ripple Test
 
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Today seemed like any other day at the shop. Just another Ford with a check engine light on and a rough running condition. The customer said it must be the alternator...but wait; Could it be? Watch this video to find out more. Subscribe now to The Car Doctor Channel
Views: 7544 The Car Doctor
Inductive spiking, and how to fix it!
 
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A description of inductive spiking, why it happens, and how a diode can save your circuits. Make sure you enable annotations as there is an error in one of the diagrams. 100 diodes for $2 on Amazon: http://www.amazon.com/exec/obidos/ASIN/B00LUJFFAU/afromods-20 Check out my webpage for more handy electronics tutorials http://www.afrotechmods.com
Views: 316156 Afrotechmods
About Radio ... Part 4  AC ripple on the HT DC by Andy Davies.
 
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In this fourth video 'About Radio' I talk about the smoothing circuit for the HT DC in the GEC BC5645 radio. If this helps you please let me know. Kind regards ... Andy gw0jxm ~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~ In this series of 'About Radio' I want to show you a circuit diagram for a radio and talk you through what each component is there for. There may be one or two anecdotes along the way, please feel free to let me know the funny radio type things that you've seen and done. I haven't uploaded the next video yet but when I do I'll give you the link details here. Here's the full link to 'About Radio ... Part 1 by Andy Davies' http://www.youtube.com/watch?v=1WzbAmm_oF0 Here's the full link to 'About Radio ... Part 1 by Andy Davies' http://www.youtube.com/watch?v=1WzbAmm_oF0 Here's the full link to 'About Radio ... Part 2 by Andy Davies' http://www.youtube.com/watch?v=lYgJSlEHj1I Here's the full link to 'About Radio ... Part 3 by Andy Davies' http://www.youtube.com/watch?v=2EaAG2HXgns HD Link to part 3 http://youtu.be/2EaAG2HXgns?hd=1 Here's the full link to 'About Radio ... Part 4 by Andy Davies' http://www.youtube.com/watch?v=Xp5KyJref2c HD link to part 4 http://www.youtube.com/watch?v=Xp5KyJref2c&hd=1 Here's the full link to 'About Radio ... Part 5 by Andy Davies' http://www.youtube.com/watch?v=ZzN8a_cqfPQ HD link to part 5 http://www.youtube.com/watch?v=ZzN8a_cqfPQ&hd=1 Here's the full link to 'About Radio ... Part 6 by Andy Davies' http://www.youtube.com/watch?v=y8ahccwnqfo HD link to part 6 http://www.youtube.com/watch?v=y8ahccwnqfo Here's the full link to 'About Radio ... Part 7 by Andy Davies' http://www.youtube.com/watch?v=GXUh_h86FHc HD link to part 7 http://www.youtube.com/watch?v=GXUh_h86FHc&hd=1 If you're interested in this series of videos then I recommend that you also take a look at Rick McWhorter's channel. This is the full link to one of the videos by Rick McWhorter http://www.youtube.com/watch?v=IWxeWnnU4i0 (AllAmericanFiveRadio) Do download his book, it's free but the information is priceless! Rick has put a huge amount of effort and a lifetimes worth of experiences into his videos, I think you find them interesting and entertaining, but be warned, you'll get hooked! I have. In my videos, inevitably there will be things that I forget to mention and maybe some things I get wrong, please feel free to comment and put me right if I go wrong. It's some 40 odd years since I was involved with domestic radios, that was before I qualified as an electrician and subsequently moved on into high power high frequency electronic engineering. I'm not setting out to tell you how to repair radios, the fact that you've read this far probably means you're Interested in radio and I'm merely helping to confirm what you already know. With regards to safety, when I was training they told me that if 30 milliamps passes through you for 30 milliseconds can kill you. Don't make the mistake that thinking that an isolation transformer will protect you from being electrocuted. An isolation transformer, correctly installed, will only protect you from passing current from the mains electrical supply to earth, that's all. If you get across the HT AC or the HT DC that is the High Tension Alternating Current or High Tension Direct Current supply of the radio and the conditions are right, it will stop your heart and if there's no one around to start it again it might just stay stopped! Do use an isolation transformer but back that up with good safe working practice. I'm not setting out to teach you good working practice but do be aware volt for volt DC is more likely to stop your heart than AC but I can also tell you that both hurt and both can kill!
Views: 2517 AndyDaviesByTheSea
DC-Link Capacitor Current Ripple Reduction in DPWM based Back-to-back Converters
 
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Including Packages ======================= * Base Paper * Complete Source Code * Complete Documentation * Complete Presentation Slides * Flow Diagram * Database File * Screenshots * Execution Procedure * Readme File * Addons * Video Tutorials * Supporting Softwares Specialization ======================= * 24/7 Support * Ticketing System * Voice Conference * Video On Demand * * Remote Connectivity * * Code Customization ** * Document Customization ** * Live Chat Support * Toll Free Support * Call Us:+91 967-774-8277, +91 967-775-1577, +91 958-553-3547 Shop Now @ http://clickmyproject.com Get Discount @ https://goo.gl/dhBA4M Chat Now @ http://goo.gl/snglrO Visit Our Channel: https://www.youtube.com/user/clickmyproject Mail Us: [email protected]
Views: 36 Clickmyproject
Boost Converters (DC-DC Step-Up) - Electronics Intermediate 1
 
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A look into how boost converters work in a very visual format. Try this circuit: http://goo.gl/nkHq9H Boost Converter Wiki: https://en.wikipedia.org/wiki/Boost_converter Software: Everycircuit.com If you would like to support me to keep Simply Electronics going, you can become a Patron at https://www.patreon.com/SimplyElectronics
Views: 308949 Simply Electronics
EEVblog #486 - Does Current Flow Through A Capacitor?
 
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Dave proves he has no fear by opening this can of electronic worms by posing the question - "Does Current Flow Through A Capacitor?" The answer may surprise you, or drive you into a physics induced rage... Turns out you can measure the displacement current: http://personal.rhul.ac.uk/uhap/027/PH2420/PH2420_files/displacement.pdf NOTE: before commenting, please watch and understand that there are TWO types of currents. Vent your rage here: http://www.eevblog.com/forum/blog/eevblog-486-does-current-flow-through-a-capacitor/ Thanks to KedasProbe for pointing out this doco video on Maxwell & the Displacement current!: http://www.youtube.com/watch?v=VdoL8IOwJw0 EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 336383 EEVblog
SIEMENS VFD G120P WITH BOP-2  PROGRAMMING & TESTING
 
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A Variable Frequency Drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names for a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, microdrive, and inverter. Frequency (or hertz) is directly related to the motor’s speed (RPMs). In other words, the faster the frequency, the faster the RPMs go. If an application does not require an electric motor to run at full speed, the VFD can be used to ramp down the frequency and voltage to meet the requirements of the electric motor’s load. As the application’s motor speed requirements change, the VFD can simply turn up or down the motor speed to meet the speed requirement. The first stage of a Variable Frequency AC Drive, or VFD, is the Converter. The converter is comprised of six diodes, which are similar to check valves used in plumbing systems. They allow current to flow in only one direction; the direction shown by the arrow in the diode symbol. For example, whenever A-phase voltage (voltage is similar to pressure in plumbing systems) is more positive than B or C phase voltages, then that diode will open and allow current to flow. When B-phase becomes more positive than A-phase, then the B-phase diode will open and the A-phase diode will close. The same is true for the 3 diodes on the negative side of the bus. Thus, we get six current “pulses” as each diode opens and closes. This is called a “six-pulse VFD”, which is the standard configuration for current Variable Frequency Drives.Let us assume that the drive is operating on a 480V power system. The 480V rating is “rms” or root-mean-squared. The peaks on a 480V system are 679V. As you can see, the VFD dc bus has a dc voltage with an AC ripple. The voltage runs between approximately 580V and 680V.We can get rid of the AC ripple on the DC bus by adding a capacitor. A capacitor operates in a similar fashion to a reservoir or accumulator in a plumbing system. This capacitor absorbs the ac ripple and delivers a smooth dc voltage. The AC ripple on the DC bus is typically less than 3 Volts. Thus, the voltage on the DC bus becomes “approximately” 650VDC. The actual voltage will depend on the voltage level of the AC line feeding the drive, the level of voltage unbalance on the power system, the motor load, the impedance of the power system, and any reactors or harmonic filters on the drive. The diode bridge converter that converts AC-to-DC, is sometimes just referred to as a converter. The converter that converts the dc back to ac is also a converter, but to distinguish it from the diode converter, it is usually referred to as an “inverter”. It has become common in the industry to refer to any DC-to-AC converter as an inverter.When we close one of the top switches in the inverter, that phase of the motor is connected to the positive dc bus and the voltage on that phase becomes positive. When we close one of the bottom switches in the converter, that phase is connected to the negative dc bus and becomes negative. Thus, we can make any phase on the motor become positive or negative at will and can thus generate any frequency that we want. So, we can make any phase be positive, negative, or zero.
Views: 4888 Learn Tech
Ar condicionado inverter DC link capacitor
 
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Ar condicionado DC link capacitor, placas eletrônica de ar condicionado inverter
Views: 399 Ricardo Politi
HLK-PM01 power supply module - test (load, ripple), review
 
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Testing the Hi-Link HLK-PM01 5V 600mA 3W power supply module - load (max current), ripple and safety test. Dummy load & battery analyzer circuit diagram: http://tefatronix.g6.cz/display.php?page=batmeter&lang=en https://www.facebook.com/tefatronix
Views: 11528 TefaTronix
AC VS DC - Pain Test (Experiment)
 
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Previous video: https://youtu.be/R-arZ31-zJo Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h During this experiment I will find out what voltage levels of AC and DC can be dangerous for the human body. Music: 2011 Lookalike by Bartlebeats You want to support my videos? You can browse and buy tools&materials from my Amazon Store. This way I get a small commission: Amazon.de: http://astore.amazon.de/great043-21 Amazon.com:http://astore.amazon.com/gre09a-20 Amazon.co.uk: http://astore.amazon.co.uk/gre0b-21 Or you feel super generous and want to use this Amazon link as your Amazon home page. And do not worry, your purchases are all anonym and the prices are all the same: Amazon.de:http://www.amazon.de/?_encoding=UTF8&camp=1638&creative=19454&linkCode=ur2&site-redirect=de&tag=great043-21&linkId=ORZEQZEOVJAFURCZ Amazon.com:http://www.amazon.com/?_encoding=UTF8&camp=1789&creative=390957&linkCode=ur2&tag=gre09a-20&linkId=I5NDCEAVCD2OWM4S
Views: 333154 GreatScott!
-+ MKP-L0(DC supporting capacitor)
 
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Structure: the products are made of temperature-resistant metalized polypropylene film, plastic and aluminum box, and enveloped with flame-resistant epoxy resin, welded by copper screw bolt. Features: low loss, high insulation resistance, good self-healing character, low equivalent resistance, good ripple current capability, long lifespan. Application: Widely used in DC-Link circuit for filter, energy storage; Replace electrolytic capacitors, better performance and long life; Wind power, photovoltaic inverter, electric vehicles and hybrid vehicles, welding equipment power supplies, SAG, and induction heating equipment for the DC link filter.
Views: 143 Linda Feng
How To Choose The Right Rectifier & Capacitor For Rectifing AC to DC
 
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(Please read calculation examples below) In this video I discuss how to choose the right size & spec'd full bridge rectifier & electrolytic capacitor. In the interests of avoiding confusing calculations please carefully study the below examples. Note in "Example 2" how the results = 200 this could easily be mistaken for 200uf. However, it is infact 200,000uf Example 1: 10 amps x 8.3ms / 5.5volts = 15.0909 (15,0909uf) Example 2: 10amps x 10ms /0.5volts = 200 (200,000uf) - Schematix -
Views: 42335 Schematix
Mod-08 Lec-27 Instantaneous and average dc link current in a voltage source inverter
 
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Pulse width Modulation for Power Electronic Converters by Dr. G. Narayanan,Department of Electrical Engineering,IISc Bangalore.For more details on NPTEL visit http://nptel.ac.in
Views: 3855 nptelhrd
Esr Meter MESR100 v2 Hands on look at a low priced Equivalent series resistance meter.
 
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------------------------------ Click "Show More" -------------------------------------- In this video we will have a look at the MESR100 esr meter from MIB Instruments,We will have a look at the insides and test some components. For the price as an entry level esr meter i would recommend it the test leeds a bit short for in circuit testing But its a great little meter. Features: JINGYAN MESR-100 V2 Auto-ranging capacitor ESR and Low Ohm Meter Measuring range from 0.001 to 100.0R, support IN CIRCUIT Testing. Using true 100 KHz sine wave to measure the ESR value, which is equal to the testing method of capacitor manufacturer. What is ESR of capacitor? There is a series resistor inside a capacitor, by using 100kHz to remove the impedance 1/(2*pi*F*C), the impedance will become small, and we can then measure the true series resistor value. A bad E-capacitor will have a larger ESR and create a large ripple rather than filtering noise. Normally, a bad capacitor is larger than 3 ohm. Using this theory, we can measure to see if the capacitor is bad/ damaged or in good condition. Because this ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, as a result it can be use as an in circuit tester as the low testing voltage will not turn on the semiconductor inside a circuit under test. Specification: 1) Accuracy: Up to 1% Wide Measurement Range: 1uF (for 0.1uF the error will be larger on equation 1/(2*pi*F*C) @ 100Khz ) 2) High Resolution: 4 digit, or 0.001Ohm @ 1 Ohm range 3) Measuring voltage: 40mV RMS (TESTING VOLTAGE) 4) Clamping voltage: 0.15V (open voltage) 5) Battery 2X AA 1.5V battery 6) External Power: 5V micro USB 7) Operating current 0.02A 8) Battery Life time: 80 Hours Thanks for watching, If you liked my videos and would like to support this channel you can make a donation @ http://goo.gl/GqtT4 or click the Show Your Support link, on are channel page and if you use bitcoins you can send us some bitcoins to 1MFGvF7NPaXC7RU5Trwo8z1dUbuowcuw5D Thanks for you support.
Views: 68872 fixitdaz
What is capacitance? The 3 Effects of Capacitance - The 2-Minute Guru (s2e8)
 
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The 3 effects that capacitance has on an electrical system Click to subscribe: http://bit.ly/Scopes_Sub Scope tips eBook ► http://bit.ly/2MG_eBook ◄ In today's 2-Minute Guru, we use a 1000 X-Series oscilloscope to measure a capacitor and view the effects of capacitance on a basic electronic circuit consisting of a resistor and a capacitor. See the three different effects capacitance has on electrical systems. Knowing the 3 effects of capacitance will help you learn how to properly use capacitors and how to identify capacitive influences in your systems. Capacitors are the most common cause of capacitive effects, but capacitance is an inherent electrical property of basically every material. So, what do capacitors do? First, capacitors resist a voltage change by storing and releasing electrical charge. The ability of capacitors to store charge, based on the formula Q=CV, means that when a voltage is applied to the capacitor, it will start to store that energy instead of passing it through to the system. This can be used to create high pass and low pass filters. Second, capacitors selectively filter frequency components of AC signals. Depending on the configuration, capacitors will filter high or low frequencies out of an electrical system. A capacitor allows high frequency components to pass through it and blocks out low frequency signal components. Third, a capacitor changes the phase relation between voltage and current. In a capacitive circuit, the current leads the voltage. Capacitors change the phase by 90 degrees. When the capacitor is in parallel with a resistor, the phase shift is only 45 degrees. Tune in for future 2-Minute Guru episodes covering more oscilloscope, electrical engineering and electronics basics! Ask me questions on Twitter: @Keysight_Daniel https://twitter.com/Keysight_Daniel Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out the EEs Talk Tech electrical engineering podcast: https://eestalktech.com The 2-Minute Guru Season 2 playlist: https://www.youtube.com/watch?v=xrLcr7bG8Ns&index=1&list=PLzHyxysSubUlqBguuVZCeNn47GSK8rcso The 2-Minute Guru Season 1playlist: https://www.youtube.com/playlist?list=PLzHyxysSubUkc5nurngzgkd2ZxJsHdJAb More about Keysight oscilloscopes: http://bit.ly/SCOPES Check out our blog: http://bit.ly/ScopesBlog Like our Facebook page: https://www.facebook.com/keysightbench/ The digital storage oscilloscope we used: http://www.keysight.com/en/pcx-2759552/infiniivision-1000-x-series-oscilloscopes?cc=US&lc=eng (The Keysight InfiniiVision 1000 X-Series Oscilloscope) This is an awesome cheap oscilloscope for beginners! Need a little more from your oscilloscope? I recommend the InfiniiVision 2000 X-Series or 3000T X-Series oscilloscopes. Both of them have a built in digital multimeter, function generator (WaveGen), and more! The 2-Minute Guru, hosted by Daniel Bogdanoff, is dedicated to teaching the basics of electrical engineering concepts and equipment. Music by: Lou Leaves the Room #Capacitor #capacitance #Current #Oscilloscope #HowTo #Engineering #ElectricalEngineering #Waveform #DigitalStorageOscilloscope #Voltage #Tutorial #basics #electronics #OhmsLaw
Views: 23658 Keysight Labs
Mod-03 Lec-24 DC bus design in voltage source inverter
 
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Power Electronics and Distributed Generation by Dr. Vinod John,Department of Electrical Engineering,IISc Bangalore.For more details on NPTEL visit http://nptel.ac.in
Views: 2978 nptelhrd
Using a super capacitor as a battery (part 9) Maxwell ac ripple testing
 
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I test the ac ripple with the 3000 F maxwell capacitors installed in the car. part 1 https://youtu.be/RhZ9-moZ-dA part 2 https://youtu.be/2bW2CXijFtE part 3 https://youtu.be/piQYAUI7I28 part 4 https://youtu.be/ZS_hmIUWhu8 part 5 https://youtu.be/ZC0FyHxhBN4 part 6 https://youtu.be/A7jLpRekV78 part 7 https://youtu.be/fnFYPHh0RDg part 8 https://youtu.be/Q9WoSDYnLxM part 10 https://youtu.be/7llC0ZB-Rf8 https://www.facebook.com/wiggys.shop/
Views: 749 wiggys shop
How to Reduce DC-DC Converter Output Ripple
 
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Steve Butler, V.P. of Engineering at VPT, discusses the definition and causes of common mode and differential mode output ripple and simple, effective ways to control output ripple. http://www.vptpower.com/ See all of VPT's videos on technical issues for incorporating DC-DC power converters, EMI filters, and other power products into your avionics, military, or other high reliability power system: http://www.vptpower.com/video/
Views: 81054 VPT Tech Videos
Analysis and Comparison of Peak-to-Peak Current Ripple in Two-Level
 
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09591912372 [email protected] Analysis and Comparison of Peak-to-Peak Current Ripple in Two-Level and Multilevel PWM Inverters
Views: 45 Neela M
EEVblog #626 - Ceramic Capacitor Voltage Dependency
 
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Dave explains, shows, and measures a potentially big trap with using high value ceramic capacitors. Is your 10uF capacitor really 10uF in your circuit? You might be shocked! Those humble X7R caps you think are a "stable" dielectric? think again... Class II and above ceramic capacitors can vary their capacitance drastically with DC bias voltage level and also the applied AC voltage. Links: http://www.murataamericas.com/murata/murata.nsf/promo_dcbias.pdf http://www.avx.com/docs/masterpubs/mccc.pdf http://www.ece.ucdavis.edu/vcl/asap/asap_v1/docs/X7R_C.pdf http://psearch.murata.com/capacitor/product/GRM21BR60J106KE19%23.html http://www.murata.com/products/design_support/simsurfing/outline.html http://www.avx.com/SpiApps Capacitor Tutorial - Ceramics & Impedance https://www.youtube.com/watch?v=TDDoi70cxw0 The piezoelectric effect demonstrated: https://www.youtube.com/watch?v=KFCRB4d991E Forum: http://www.eevblog.com/forum/blog/eevblog-626-ceramic-capacitor-voltage-dependency-download/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 62082 EEVblog
How to Test an Alternator  ( Testing the Voltage Regulator, Diode rectifier and Stator)
 
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This video will cover the following ------------------------------------------------------- How to test an alternator using multi meter How to replace an alternator How to diagnose alternator charging issues Alternator ripple test How to test a voltage regulator in an alternator How to replace bearing in an alternator ( Alternator brush replacement ) how to test a rectifier in an alternator How to test diodes pack in an alternator How ecu controlled / computer controlled alternators work How to test drive belts in a car How to replace a decoupler pulley Diagnosing no charge , undercharging , overcharging alternator with multimeter How to fix a rattling alternator How to test fuses and relays How to test alternator duty cycle How PWM ( pulse width modulation basics ) works How to read waveforms why your battery light is on How to find a voltage drop how to use a multimeter How to find a overnight parasitic battery drain How to repair an alternator and finally Deciding on brand new vs remanufactured Featuring - Toyota camry / aurion / corolla / daihatsu cuore / mitsubishi lancer Silicone Paste https://amzn.to/2yfil3d Digital Multimeter https://amzn.to/2ye7aYx Automotive Relay Tester https://amzn.to/2OzmOIb PicoScope PP923 Standard Automotive Kit https://amzn.to/2DVAnNV Pocket-Sized Digital Storage Oscilloscope https://amzn.to/2OuRZVh Alternator Decoupler Pulley Tool Kit https://amzn.to/2ICBUaC 17mm hex socket https://amzn.to/2xYiZme Impact wrench https://amzn.to/2DUagag https://amzn.to/2NmGjiH https://amzn.to/2OzCcV2 Impact wrench ( high torque) https://amzn.to/2IE2YGq https://amzn.to/2DXvPXA Breaker Bar https://amzn.to/2OA5aE9 WD-40 https://amzn.to/2IDkTgj Autel MaxiDAS DS808 https://amzn.to/2O5tr5F haynes repair manual https://www.amazon.com/gp/search/ref=as_li_qf_sp_sr_il_tl?ie=UTF8&tag=junkydiyguy-20&keywords=haynes repair manual&index=aps&camp=1789&creative=9325&linkCode=xm2&linkId=cf0c7c2967e4dc41f52250c37fe30079 test light https://amzn.to/2DVdYjO Power Probe III https://amzn.to/2yexzWf Music: Ahrix – Nova Spotify: https://open.spotify.com/artist/0kXCdaJ7C5MD27jXxzvHsa Facebook: http://bit.ly/1wFWvyM Youtube Channel: http://bit.ly/2mUBTD2 Youtube Video: http://bit.ly/1eXqiOi SoundCloud: http://bit.ly/1m1ye0b
Views: 515230 Junky DIY guy
Three phase three level flying capacitor inverter
 
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Paper title: Dc-link current and voltage harmonics in three-phase three-level flying capacitor inverters with sinusoidal carrier based PWM authors names: Manel Hammami, Marija Vujacic, Gabriele Grandi affiliation: Dept. of Electrical, Electronic and Information Engineering Alma Mater Studiorum – University of Bologna, Italy Paper abstract: This paper concerns with the analysis and calcula­tion of the low-frequency dc-link input current and voltage ripple har­monic components in three-phase three-level flying capacitor in­verter topologies. As a first simplified approach, reference is made to si­nusoidal carrier-based PWM, and sinusoidal load cur­rents with unity power factor, well representing most of the grid-connected applications. The proposed method can be straight­forwardly ex­tended to centered PWM with any output power fac­tor angle. Based on the ripple requirements of dc-link voltage, an original simple and effective equation for designing the dc-link capacitor has been proposed, since design guidelines only for the flying ca­pacitors are reported in literature. Numerical simula­tions have been carried out by Matlab/Simulink in order to verify the pro­posed developments.
Panasonic Hybrid Capacitors Provide a Low ESR with a Higher Withstanding Voltage
 
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http://www.futureelectronics.com/en/Search.aspx?dsNav=Ny:True,Ro:0,Nea:True,N:454-4294938236 Typical Polymer Capacitors have an excellent equivalent series resistance or ESR. However, due to the nature of the Polymer raw material the voltage rating of this style of capacitor can only go as high as 80V DC. In comparison, a conventional electrolytic capacitors can handle higher voltages and has a larger charge capacity. However, the ESR characteristics are inferior to a Polymer Capacitor. Hybrid Capacitors utilize a combination of liquid aluminum electrolyte and polymer as a dielectric material, providing a best of both worlds approach and creating a superior capacitor. The polymer contributes to a low ESR while the liquid aluminum electrolyte allows for a higher capacitance, higher withstanding voltage and a longer lifetime. Hybrid capacitors provide a tighter control over DC leakage current as compared to electrolytic capacitors. Also, a hybrid capacitor opens upon failure where a polymer capacitor short circuits on failure. Due to its enhanced ESR and ripple current handling capabilities hybrid capacitors are useful in applications that require high frequency switching at higher voltages. One hybrid capacitor can be used to replace multiple conventional surface mount electrolytic capacitors, thus saving space on your circuit board. http://www.futureelectronics.com/en/Search.aspx?dsNav=Ny:True,Ro:0,Nea:True,N:436-4294938236 Hybrid capacitors have excellent temperature characteristics and a high mean time to failure, making them especially useful in industrial applications where durability is paramount. Typical applications include automotive ECUs, motor drives, security cameras and LED lighting. For more information on Panasonic’s hybrid capacitors visit their website.
Views: 22502 Future Electronics
How to make 5 volt power supply in 5 minutes Easily
 
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In this video, I have designed a simple 5 volt 1 amp DC power supply from AC mains (230V/120V AC) using an LM7805 voltage regulator. After watching this video you can easily make the 5 v power supply within 5 minutes. You can use this 5-volt regulator to supply your Arduino circuit or any 5v USB gadgets. This 5 volt supply can also be used as the mobile charger. In this project, I have not used Heat Sink with LM7805 but I will suggest you use a heat sink with 7805 ic. The whole process of making this 5 v supply is shown in steps so you can easily design this 5v regulator. The required components are: 1. LM7805 regulator 2. 0.1uF Capacitors (2nos) 3. 470uF Capacitor (1 no) 4. Diode 1N4007 (4nos) 5. Step Down Transformer [230/120V - 9V] 6. Connector 7. Connecting wires 8. Zero PCB Working Principle of this 5 v DC source: First, we are using a step-down transformer [Secondary rating 9V and 1 amp] to step down 230V/ 120V AC supply to 9 Volt AC. Then we rectify the 9V AC to 9 V DC using a diode bridge rectifier [Full wave rectifier]. After the rectifier, we have used Capacitors to filter the ripple from the circuit and fed it to the input of LM7805 voltage regulator. LM7805 regulate the 9 volt DC to 5 Volt DC and at the output of 7805 ic, we get constant 5 Volt DC output. To design a 5 volt DC power supply from 9-volt battery please refer the following link: https://youtu.be/9KXN69eXzj8 If you like the video please hit the like button and share it with your friends. For more such videos don't forget to SUBSCRIBE to our channel. Thank you for your Support. Find us on Facebook: https://www.facebook.com/techstudycell/ Other useful videos: How to make Clap Switch & Music Rhythm LED Flashlight circuit without 555 Timer/Electronics Project https://youtu.be/wXORaeun8vA Some Useful Life Hacks of 9 volt battery / Flashlight, Mini Fan & 9 Volt Battery Connector https://youtu.be/rppPbBEFzGM How to make Flashing LED Light for Bike using Transistor https://youtu.be/cXCExzIBNsA How to Test Capacitors with and without Multi-meter. https://youtu.be/NqvL7Cyemiw
Views: 13828 Tech StudyCell
EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing
 
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Dave grabs a few junkbox parts and builds a useful constant current load for switch mode power supply, battery testing, and other applications.
Views: 202318 EEVblog
Soft Switching Dual Flyback DC–DC Converter With Improved Efficiency and Reduced Output Ripple Curre
 
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Soft Switching Dual Flyback DC–DC Converter With Improved Efficiency and Reduced Output Ripple Curre This paper presents a soft-switching dual-flyback dc-dc converter with improved efficiency and reduced output ripple current. Zero-voltage-switching (ZVS) technique and a dual-flyback module for reducing the number of snubber current paths are adopted to improve efficiency. For the ZVS technique, a self-driven synchronous rectifier (SR) is used instead of an output diode. By turning the self-driven SR off after a short delay, a main switch is turned on under the ZVS condition. For reducing the number of snubber current paths, a dual-flyback module and a snubber diode are used. When the main switch is turned off, leakage inductance energy is absorbed by a snubber diode into an input source and a primary dc-bus capacitor. Then, this energy is reprocessed by the dual-flyback dc-dc module to secondary side. Hence, there is only one snubber current path. In addition, the proposed converter features a reduced output ripple current because of the continuous current. Consequently, the proposed converter can achieve high efficiency and reduced output ripple current. To verify the performance of the proposed converter, operating principles, steady-state analyses, and experimental results from a 340 to 24-V, 100-W prototype are presented. Web : http://ieeemaster.com/ Web : http://www.lemenizinfotech.com/ Web : http://www.lemenizinfotech.com/tag/ieee-projects-in-pondicherry/ web : http://ieeemaster.com/power-electronics-ieee-projects-2017-2018/ http://www.lemenizinfotech.com/power-electronics-ieee-projects-2017-2018/ Mail : [email protected] / [email protected] Mobile : 9566355386 / 9962588976
Views: 16 LeMeniz Infotech
16 volt DC-AC Power Inverter, Part 1
 
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Time to connect the 1000 watt power inverter to the 16 volt lithium battery bank and see if it works. The TrippLite APS1012SW power inverter is rated up to 16 volts DC input. My Maxwell supper capacitor battery bank is rated up to 16.2 volts. This was the inspiration for the 16 volt, 4S lithium ion battery bank. I wanted to get some experience with the lithium ion battery technology, while utilizing the equipment I already had in my 12 volt solar power system. I finally finished up my new bus bar system that should be able to handle the high current draw of the power inverter. I use 1" *25mm) square aluminum bar stock for the load and battery bus bars. The 175A and 350A Anderson PowerPole connectors use 1/2" aluminum pins to connect to the bus bar, all connections coated in OxGuard anti-oxidant compound. On the battery bus, I have multiple plugs which can feed two groups of batteries. Each group will have 4 or 5 0.5KWH battery modules attached. I think my solar shed will be able to fit up to 16KWH of battery capacity or 32 modules, so there should be plenty of connections for the future. More to come... Subscribe for more content like this Feel free to rate, comment and share And as always, thanks for watching Intro: Louisiana Fairytale by Austin Rogers http://drfiddle.com/show_tune.php?id=94
Views: 380 R Brown
#084 LM317T Linear Voltage [or Current] Regulator
 
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Features : Output : Adjustable (1.2 V to 37 V) Output Current : 1.5 A Load Regulation : 0.5 % Input Voltage MAX : 40 V Line Regulation : 0.04 % / V Maximum Operating Temperature : + 125 C Mounting Style : Through Hole Package / Case : TO-220 Linear Voltage Regulators are low-efficiency compared to switching mode regulators, which came around in the late 60s. If you know what a voltage divider with resistors does, imagine one of those resistors is a transistor, which is biased by how far off the output is to that desired. Pretty simple. Because all the load current has to flow through them, the greater the difference between the input & output voltage, the more heat needs to be dissipated, which is why they are larger, have heat sinks, etc. ("Without a heat sink with an ambient temperature at 50 ⁰C such as on a hot summer day inside a box, a maximum power dissipation of (TJ-TA)/RθJA = ((125-50)/80) = 0.98 W can be permitted. (A piece of shiny sheet metal of Aluminum with the dimensions 6 x 6 cm and 1.5 mm thick, results in a thermal resistance that permits 4.7 W of heat dissipation." ~ wikipedia link below). Also 0.04%/V regulation accuracy is pretty tight. Efficiencies can be compared to their switching mode counterparts in terms of expected efficiencies. With Linear Regulators, efficiency is a linear measure of the ratio between input and output voltages, where: Vout/Vin ratio is 0.1 = 10% efficiency Vout/Vin ratio is 0.5 = 50% efficiency Vout/Vin ratio is 0.9 = 90% efficiency [See this article for the chart, application circuits, etc.: http://cds.linear.com/docs/en/application-note/AN140fa.pdf] Q: Why would you ever use one of these over a switching regulator? "Applications Where Linear Regulators Are Preferable There are many applications in which linear regulators or LDOs provide superior solutions to switching supplies, including: 1. Simple/low cost solutions 2. Low noise/low ripple applications 3. Fast transient applications 4. Low dropout applications" There is no oscillator switching the output on & off, requiring large capacitance to try to smooth out the ripple. There is nothing _causing_ ripple-just like in a resistor divider. I'm having a h*ll of a time with radio clones of chips like the nRF24L01+ that are notoriously sensitive to noise on their DCin, and I hope to create some bench/lab tests to compare this chip to the 7805, 1117, and other bench supplies I've made here. Will the cleanest regulation I can do at the component level help? Couldn't hurt! :) If you just want to go from 37vdc to 3.3vdc, use a switching mode regulator, as they will run cool at typically over 95% efficiency (less efficiency = heat (I2R) loss). For sensitive stuff that isn't behaving like you expected, try one of these $0.10 variable regulators and see if you find a difference... :) Thanks! pat :) reference: Datasheet: http://pdf1.alldatasheet.com/datasheet-pdf/view/22754/STMICROELECTRONICS/LM317T.html Wikipedia: https://en.wikipedia.org/wiki/LM317 10 LM317T for $1USD (delivered) on eBay: http://www.ebay.com/itm/New-10pcs-LM317T-LM317-Voltage-Regulator-IC-1-2V-to-37V-1-5A-LDO-/182652276375?epid=1227192467&hash=item2a86ec8e97:g:yQkAAOSwnHZYV4U5 The complete PS I show at the end: http://www.ebay.com/itm/LM317-DC-DC-Step-Down-Power-Module-Adjustable-Linear-Regulator-Low-Ripple-/192170168034?epid=815000727&hash=item2cbe3c0ee2:g:IKwAAOSwjqVZAbsx
Views: 879 The Sales Engineer
A multi-stage EMI-Filter for DC-Power-Supplies Pt.3:  Some additional explanations to Pt.1
 
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The filter is now available readily assembled in 3 different ratings as well as bare PCBs for self-assembly in our shop: http://www.ak-modul-bus.de/stat/stromversorgung.html (This is the shop for customers from Europe. For customers from overseas it will be available from February 2018 in our new shop: www.ak-modul-bus.de/eng) Roger explains the some open questions from the first part of the series. Especially what dommon-mode noise is and how it is filtered out with a common-mode choke (also called current-compensated choke) Forum: https://forum.kainkalabs.com/forumdisplay.php?fid=3 Shop: http://www.ak-modul-bus.de/ twitter: http://twitter.com/kainkalabs facebook: http://facebook.com/kainkalabs
Views: 9690 KainkaLabs
AC to DC Module for IoT Projects - Baba Awesam
 
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In this video, I review and demo an AC to DC module from Hi Link. This can be used to power micro controllers requiring 5V Power.
Views: 1354 Samir Sogay
MPP Solar PIP4048 (aka PIP 4048) Review - Multiple Failures
 
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In this, Part 2 of my 3 Part Series regarding my experiences with two of MPP Solar's flagship products, I discuss the likely causes of the three failures I've experienced in the 12 months I've owned this inverter. My conclusion is that the inverter is a great idea poorly executed, and I speak about my experiences and detail a number of potential design flaws that may have contributed to my really disappointing foray into this unit, including under-specced components with a rated lifetime of only 2000 hours - that together with the high ripple current detailed in the previous video may be a cause for concern. References:- What does Capacitor Life Really Mean? http://www.diyaudio.com/forums/parts/83149-capacitor-life-time-what-does-really-mean.html Ripple Voltage and the Effect Upon Batteries http://www.cdtechno.com/pdf/ref/41_2131_0212.pdf PV Inverter Performance and Reliability - What is the role of the Bus Capacitor? http://energy.sandia.gov/wp/wp-content/gallery/uploads/Flicker-PVSC-Cap-Paper-Final.pdf Understanding the topology and operation of AC Inverters - http://www.jaycar.com.au/images_uploaded/inverter.pdf Selecting and Applying Capacitors for Inverter Applications http://www.digikey.com.au/Web%20Export/Supplier%20Content/CDE_338/PDF/CDE_SelectingCaps.pdf?redirected=1 Low ESR Capacitors - a primer - http://www.illinoiscapacitor.com/pdf/Papers/low_ESR_fact_or_fiction.pdf Selecting Film Bus Link Capacitors for maximum lifespan in inverter applications - http://www.polypropylenecapacitor.com/pdf/whitepapers/IEMDC_2009_11310_Final_Rev_4.pdf Reviving a failed inverter - http://www.nlvocables.com/blog/?p=95 How an inverter functions - http://homemadecircuitsandschematics.blogspot.com.au/2012/02/how-inverter-functions-how-to-repair.html
Views: 15968 Easily_Bored_Engineer
How To Test A Capacitor
 
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Detail Instructions on How To Test a Capacitor properly with a digital capacitor meter. Buy Tools For This Job. Click here: http://tinyurl.com/y7dpn9bn Help Support My Channel: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=9ZT925NTLR5E6 Visit me at: http://www.Nthefastlane.com Facebook: https://www.facebook.com/Nthefastlane Google+: https://plus.google.com/117540915227325837174 -~-~~-~~~-~~-~- Learning to be a mechanic can help you save a lot of money. Auto repair shops can charge you a fortune and not even give a quality repair sometimes. That's why I put these auto repair videos together. Folks like you need simple, easy steps to make sure the job gets done right. "DON'T FORGET TO CLICK THE "🔔" AT THE (TOP RIGHT) CORNER OF YOUTUBE TO BE NOTIFIED OF MY NEW UPLOADS" *NEW Blog* https://nthefastlane.blogspot.com (Honda Torque Specs App For Android) LINK: http://tinyurl.com/y77f78or Buy Automotive Jewelry: https://tinyurl.com/ybymxhfy Buy Automotive Apparel: https://tinyurl.com/ybe9feqa By Automotive Tools: https://tinyurl.com/yan7fer3 NOCO Chargers & Jump Starters 20%OFF!! https://tinyurl.com/ybavcp9y Visit me at: http://www.Nthefastlane.com Facebook: https://www.facebook.com/Nthefastlane Google+: https://plus.google.com/+Nthefastlane If an "NTHEFASTLANE" Video has helped you in anyway, please, consider giving by using "Patreon" to help support my channel. The videos take a lot of time and effort to create. Creating video takes a lot of quality time that could be spent doing a repair that pays a lot more. Over all it makes things a lot more difficult to pay the bills!. CLICK HERE: https://www.patreon.com/Nthefastlane THANK YOU!!! Jeremy. Due to factors beyond the control of NTHEFASTLANE, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Nthefastlane assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. NTHEFASTLANE recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of NTHEFASTLANE , no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not NTHEFASTLANE.
Views: 1632470 Nthefastlane
What is ELECTROLYTIC CAPACITOR? What does ELECTROLYTIC CAPACITOR mean?
 
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What is ELECTROLYTIC CAPACITOR? What does ELECTROLYTIC CAPACITOR mean? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Electrolytic capacitor is the generic term for three different capacitor family members: 1. Aluminum electrolytic capacitors, 2. Tantalum electrolytic capacitors and 3. Niobium electrolytic capacitors All electrolytic capacitors (e-caps) are polarized capacitors whose anode (+) is made of a particular metal on which an insulating oxide layer forms by anodization, acting as the dielectric of the electrolytic capacitor. A non-solid or solid electrolyte which covers the surface of the oxide layer in principle serves as the second electrode (cathode) (-) of the capacitor. Due to their very thin dielectric oxide layer and enlarged anode surface, electrolytic capacitors have—based on the volume—a much higher capacitance-voltage (CV) product compared to ceramic capacitors or film capacitors, but a much smaller CV value than electrochemical supercapacitors. The large capacitance of electrolytic capacitors makes them particularly suitable for passing or bypassing low-frequency signals up to some mega-hertz and for storing large amounts of energy. They are widely used for decoupling or noise filtering in power supplies and DC link circuits for variable-frequency drives, for coupling signals between amplifier stages, and storing energy as in a flashlamp. Standard electrolytic capacitors are polarized components due to their asymmetrical construction, and may only be operated with a higher voltage (ie, more positive) on the anode than on the cathode at all times. Voltages with reverse polarity, or voltage or ripple current higher than specified (as little as 1 or 1.5 volts may suffice), can destroy the dielectric and thus the capacitor. The destruction of electrolytic capacitors can have catastrophic consequences (explosion, fire). Bipolar electrolytic (aka non-polarized) capacitors which may be operated with either polarity are special constructions with two anodes connected in reverse polarity.
Views: 3563 The Audiopedia
DIY Homemade 30watt LED BULB with Transformerless power supply |easy and low cost
 
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DIY Homemade 30watt LED BULB with Transformerless power supply |easy and low cost is very simple to design circuit we need some calculations for ppc capacitor please check below video u can better understand https://youtu.be/y9lbqQiWvk8 some household bulbs like LED bulb in these transformer power supply is use you can also create your own led bulb in easy way ** please like and subscribe** ************All Videos imp files are shared by link these link is only open 5hr so please subscribe and on the notification so u can download files *************** **circuit diagram link is given below** https://drive.google.com/open?id=18Jh... how to use specific capacitor for these power supply you can check below calculation for better understanding X Rated capacitor 400 Volt 225k 400v capacitor The X rated capacitor is designed for 250, 400, 600 VAC. Higher voltage versions are also available. The Effective Impedance (Z), Rectance (X) and the mains frequency (50 – 60 Hz) are the important parameters to be considered while selecting the capacitor. The reactance (X) of the capacitor (C) in the mains frequency (f) can be calculated using the formula: X = 1 / (2 ¶ fC ) For example the reactance of a 0.33µF capacitor running in the mains frequency 50Hz will be: X = 1 / {2 ¶ x 50 x 0.33 x( 1 / 1,000,000) } =9645.75 Ohms 0r 96.6 Kilo ohms. Rectance of the capacitor 0.33 uF is calculated as X = 1/2Pi*f*C Where f is the 50 Hz frequency of mains and C is the value of capacitor in Farads. That is 1 microfarad is 1/1,000,000 farads. Hence 0.33 microfarad is 0.33 x 1/1,000,000 farads. Therefore the rectance of the capacitor appears as 9645.75 Ohms 0r 96.6 Kilo ohms..To get current I divide mains Volt by the rectance in kilo ohm.That is 230 / 96.6 = 23.80 mA. Effective impedance (Z) of the capacitor is determined by taking the load resistance (R) as an important parameter. Impedance can be calculated using the formula: Z = √ R + X Suppose the current in the circuit is I and Mains voltage is V then the equation appears like: I = V / X The final equation thus becomes: I = 230 V / 96.6 = 23.80 mA. Therefore if a 0.33 uF capacitor rated for 230 V is used, it can deliver around 23 mA current to the circuit. But this is not sufficient for many circuits. Therefore it is recommended to use a 470 nF capacitor rated for 400 V for such circuits to give required current. X Rated AC capacitors – 250V, 400V, 680V AC x rated ac capacitors Table showing the X rated capacitor types and the output voltage and current without load capacitor and current Rectification Diodes used for rectification should have sufficient Peak inverse voltage (PIV). The peak inverse voltage is the maximum voltage a diode can withstand when it is reverse biased. 1N4001 diode can withstand up to 50 Volts and 1N4007 has a toleration of 1000 Volts. The important characteristics of general purpose rectifier diodes are given in the table. DC Smoothing A Smoothing Capacitor is used to generate ripple free DC. Smoothing capacitor is also called Filter capacitor and its function is to convert half wave / full wave output of the rectifier into smooth DC The capacitance value determines the amount of ripples that appear in the DC output when the load takes current. Voltage Regulation Zener diode is used to generate a regulated DC output. A Zener diode is designed to operate in the reverse breakdown region. If a silicon diode is reverse biased, a point reached where its reverse current suddenly increases. The value of R can be calculated using the formula: R = Vin – Vz / Iz Where Vin is the input voltage, Vz output voltage and Iz current through the Zener In most circuits, Iz is kept as low as 5mA. If the supply voltage is 18V, the voltage that is to be dropped across R to get 12V output is 6volts. If the maximum Zener current allowed is 100 mA, then R will pass the maximum desired output current plus 5 mA . So the value of R appears as: R = 18 – 12 / 105 mA = 6 / 105 x 1000 = 57 ohms Power rating of the Zener is also an important factor to be considered while selecting the Zener diode. According to the formula P = IV. P is the power in watts, I current in Amps and V, the voltage. So the maximum power dissipation that can be allowed in a Zener is the Zener voltage multiplied by the current flowing through it. For example, if a 12V Zener passes 12 V DC and 100 mA current, its power dissipation will be 1.2 Watts. So a Zener diode rated 1.3W should be used. The drawback of the Capacitor power supply includes No galvanic isolation from Mains.So if the power supply section fails, it can harm the gadget. Low current output. With a Capacitor power supply. Maximum output current available will be 100 mA or less.So it is not ideal to run heavy current inductive loads. Output voltage and current will not be stable if the AC input varies. Caution ****************Thanks for watching************************** see u next video
Views: 638 YS Yogesh Shende
What is VFD, Variable Frequency Drive how VFD work , VFD, Communication, Motor Control Danfoss
 
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How VFD work, What is Prince of VFD how VFD work. Danfoss, Vacon, What is a VFD? A Variable Frequency Drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names for a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, microdrive, and inverter. Frequency (or hertz) is directly related to the motor’s speed (RPMs). In other words, the faster the frequency, the faster the RPMs go. If an application does not require an electric motor to run at full speed, the VFD can be used to ramp down the frequency and voltage to meet the requirements of the electric motor’s load. As the application’s motor speed requirements change, the VFD can simply turn up or down the motor speed to meet the speed requirement. How does a Variable Frequency Drive work? The first stage of a Variable Frequency AC Drive, or VFD, is the Converter. The converter is comprised of six diodes, which are similar to check valves used in plumbing systems. They allow current to flow in only one direction; the direction shown by the arrow in the diode symbol. For example, whenever A-phase voltage (voltage is similar to pressure in plumbing systems) is more positive than B or C phase voltages, then that diode will open and allow current to flow. When B-phase becomes more positive than A-phase, then the B-phase diode will open and the A-phase diode will close. The same is true for the 3 diodes on the negative side of the bus. Thus, we get six current “pulses” as each diode opens and closes. This is called a “six-pulse VFD”, which is the standard configuration for current Variable Frequency Drives. Let us assume that the drive is operating on a 480V power system. The 480V rating is “rms” or root-mean-squared. The peaks on a 480V system are 679V. As you can see, the VFD dc bus has a dc voltage with an AC ripple. The voltage runs between approximately 580V and 680V. We can get rid of the AC ripple on the DC bus by adding a capacitor. A capacitor operates in a similar fashion to a reservoir or accumulator in a plumbing system. This capacitor absorbs the ac ripple and delivers a smooth dc voltage. The AC ripple on the DC bus is typically less than 3 Volts. Thus, the voltage on the DC bus becomes “approximately” 650VDC. The actual voltage will depend on the voltage level of the AC line feeding the drive, the level of voltage unbalance on the power system, the motor load, the impedance of the power system, and any reactors or harmonic filters on the drive. The diode bridge converter that converts AC-to-DC, is sometimes just referred to as a converter. The converter that converts the dc back to ac is also a converter, but to distinguish it from the diode converter, it is usually referred to as an “inverter”. It has become common in the industry to refer to any DC-to-AC converter as an inverter. Note that in a real VFD, the switches shown would actually be transistors. When we close one of the top switches in the inverter, that phase of the motor is connected to the positive dc bus and the voltage on that phase becomes positive. When we close one of the bottom switches in the converter, that phase is connected to the negative dc bus and becomes negative. Thus, we can make any phase on the motor become positive or negative at will and can thus generate any frequency that we want. So, we can make any phase be positive, negative, or zero. The blue sine-wave is shown for comparison purposes only. The drive does not generate this sine wave. Notice that the output from the VFD is a “rectangular” wave form. VFD’s do not produce a sinusoidal output. This rectangular waveform would not be a good choice for a general purpose distribution system, but is perfectly adequate for a motor. If we want to reduce the motor frequency to 30 Hz, then we simply switch the inverter output transistors more slowly. But, if we reduce the frequency to 30Hz, then we must also reduce the voltage to 240V in order to maintain the V/Hz ratio (see the VFD Motor Theory presentation for more on this). How are we going to reduce the voltage if the only voltage we have is 650VDC? This is called Pulse Width Modulation or PWM. Imagine that we could control the pressure in a water line by turning the valve on and off at a high rate of speed. While this would not be practical for plumbing systems, it works very well for VFD’s. Notice that during the first half cycle, the voltage is ON half the time and OFF half the time. Thus, the average voltage is half of 480V or 240V. By pulsing the output, we can achieve any average voltage on the output
Views: 32 Technical Army
LM 2596 DC -DC  Buck converter | Adjustable step down module | specifications -Application
 
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This is an LM2596 DC-DC buck converter step-down power module with a high-precision potentiometer for adjusting output voltage, capable of driving a load up to 3A with high efficiency. When the output current required is greater than 2.5A(10W) ------------------------------------------------------------------------------- Download Circuit diagram and detail - https://goo.gl/Rtz7wL https://goo.gl/KuHZZN ------------------------------------------------------------------------------- the component is using * LM2596 dc-dc buck converter step down module ___________________________________________________ buy material by the following a link LM2596 dc-dc buck converter step down module -https://goo.gl/pxH5AR MT3608 2A dc-dc Step Up Boost Power Module = https://goo.gl/c4Ys6P ----------------------------------------------------------------------------- Click the link see the more videos on the playlist 1)Monitoring & controlling project circuits - https://goo.gl/UUT2CG 2) Inverter circuits - https://goo.gl/xz33Uu 3) Chaser LED lights circuits - https://goo.gl/5aRnU4 4) DC Power supply circuits - https://goo.gl/yt4fuP 5) Remote control circuit - https://goo.gl/rJzx1d 6) LED-based circuits - https://goo.gl/pga5qh 7) Relay-based circuit - https://goo.gl/Q4r7XM 8) PIC Microcontroller project - https://goo.gl/9tNaVm 9) Relay-based circuit - https://goo.gl/J4u8BD 10) Battery controller circuits - https://goo.gl/YVHokC 11) Repair works - https://goo.gl/11uPxn 12)Transformerless power supply circuits - https://goo.gl/c9zv ------------------------------------------------------------------------------------------------- buy more material by the following a link 1. Electronic Components Project Kit or Breadboard, Capacitor, Resistor, LED, Switch =https://goo.gl/1mBi3L 2. 1N4007 Mic 1A 1000V DO-41 Rectifier Diode Set Of 10 = https://goo.gl/X71hCp 3. DC 0.9V-5V 0.6A USB Charger power bank Module https://goo.gl/ZpP9eE 4. Dual USB 5V 1A 2.1A Mobile Power Bank Module =https://goo.gl/5TKcMi 5. DC Boost Converter Power Supply Module = https://goo.gl/c4Ys6P 6. 433Mhz RF Wireless Transmitter Receiver Module = https://goo.gl/ZntXYr 7. 10W mini White High Power LED SMD Bead Chips = https://goo.gl/NFBtTV 8. 12V DC Battery Eliminator Power Supply transformer-1 Amp = https://goo.gl/nBE6P3 9. LED driver AC TO DC 12V CONVERTER = https://goo.gl/NMf1Vh 10. 555 Timer Ic = https://goo.gl/ZPB1Zt 11. 1W High Power Led Lamp 110-120Lm LEDs = https://goo.gl/3NuufG 12. 12 Volt DC Motor (Multipurpose Brushed Motor For DIY Applications PCB Drill) = https://goo.gl/RVHTQK 13. DC 12v gear motor = https://goo.gl/M3yqZL 14. Electric Hand Drill PCB Press Drilling 12V Motor, 12000 RPM, 10 Pcs 0.3-3.0 mm Drill Bits Set, Keyless Brass Chucks and Hi-Watt Battery = https://goo.gl/7qUf9m 15. 12V PCB MOUNT SUGAR CUBE RELAY = https://goo.gl/m1pbD9 -------------------------------------------------------------------------------
Views: 7481 POWER GEN
СУПЕР лабораторник, 20A50V+тест
 
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Сердце прибора: https://ru.aliexpress.com/item/RD-DPS5020-Constant-Voltage-current-Step-down-communication-digital-Power-Supply-buck-Voltage-converter-LCD-voltmeter/32821185351.html?aff_platform=link-c-tool&cpt=1525211028733&sk=E276Qnm&aff_trace_key=508d1d7be218494c894a9ba83526d881-1525211028733-00493-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Конденсаторы: https://ru.aliexpress.com/item/Free-shipping-80V-22000UF-40-80MM-Electrolytic-capacitor-new-and-original-import-capacitors/32374918824.html?aff_platform=link-c-tool&cpt=1525380633959&sk=E276Qnm&aff_trace_key=6b65d15dc9c0495f95ac0d3e78218c3d-1525380633959-05909-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Блок питания: https://ru.aliexpress.com/item/Switching-Power-Supply-DC-60V-20A-1200W-Switching-Switch-Driver-Transformer-220V-AC-DC60V-SMPS-For/32789145735.html?aff_platform=link-c-tool&cpt=1525211056025&sk=E276Qnm&aff_trace_key=dc9eedae452e4ffda31c3d94015bc2c7-1525211056025-02888-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Тестер переменки: https://ru.aliexpress.com/item/AC-Voltage-Meters100A-80-260V-Digital-LED-Power-Panel-Meter-Monitor-Power-Energy-Voltmeter-Ammeter-watt/32728149529.html?aff_platform=link-c-tool&cpt=1525211039854&sk=E276Qnm&aff_trace_key=6ace414e79c04c5391fbdb05ff136c0a-1525211039854-07466-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Термостат для БЛОКА ПИТАНИЯ: https://ru.aliexpress.com/item/50-110-Degree-W1209-Digital-thermostat-Temperature-Control-Switch-12V-sensor/32444379539.html?aff_platform=link-c-tool&cpt=1525210947522&sk=E276Qnm&aff_trace_key=5c4e0e0ec76f4145aef07e73f3ffa6f1-1525210947522-01134-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Многофункциональный тестер: https://ru.aliexpress.com/item/RD-100v-50A-100A-7in1-OLED-Multifunction-Tester-Voltage-current-Time-temperature-capacity-voltmeter-Ammeter-electrical/32788074155.html?aff_platform=link-c-tool&cpt=1525210961595&sk=E276Qnm&aff_trace_key=b541e336c93c4b01adebafbb13affed4-1525210961595-00433-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Выходные клеймы напряжения: https://ru.aliexpress.com/item/4pcs-Black-Red-Thread-Gold-Plated-Audio-Speaker-Binding-Post-Banana-Plug-Terminals-56MM/32525321556.html?aff_platform=link-c-tool&cpt=1525210983735&sk=E276Qnm&aff_trace_key=1cf804cdf52a47099c9c1650f4bab60c-1525210983735-06996-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Термостат в корпусе, для внутренней температуры: https://ru.aliexpress.com/item/55-120-Degree-Digital-Temperature-Controller-DC-12V-Thermostat-Temperature-Control-Red-And-Blue-Display/32799446118.html?aff_platform=link-c-tool&cpt=1525210985769&sk=E276Qnm&aff_trace_key=3efce0b8eba74648ad50ab52ad9a6174-1525210985769-05116-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Розетка: https://ru.aliexpress.com/item/Black-USB-Wall-Socket-AC-110-250V-US-UK-EU-AU-Wall-Socket-2-Port-USB/32783135852.html?aff_platform=link-c-tool&cpt=1525211081094&sk=E276Qnm&aff_trace_key=b4ae887c7db54536872d948536532d49-1525211081094-02394-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d Разъём прикуривателя: https://ru.aliexpress.com/item/12V-Waterproof-Car-Boat-Motorcycle-Cigarette-Lighter-Socket-Power-Plug-Outlet-Car-Accesories-Heat-Resisting-Plastic/32773047820.html?aff_platform=link-c-tool&cpt=1525211085933&sk=E276Qnm&aff_trace_key=2efdfe8e690f4d5499ef6f3aae01f394-1525211085933-00007-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d 2 Usb разъёма +тестер: https://ru.aliexpress.com/item/12V-Dual-USB-Motorcycle-Cigarette-Lighter-Car-Charger-Socket-Charger-LED-Digital-Voltmeter-Meter-Monitor-Red/32787668524.html?aff_platform=link-c-tool&cpt=1525211087865&sk=E276Qnm&aff_trace_key=2f1b7e487bc94ea1a755e2c4c19e5544-1525211087865-04094-E276Qnm&terminal_id=0e5b0a56373d48528ed3a3e073e98b5d
Views: 421 Serg Sergio
About Radio ... Part 11  Cleaning the variable capacitor, by Andy Davies.
 
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In this eleventh video 'About Radio' I talk about how to clean the variable tuning capacitor. A bit of a deviation from the circuit diagram but I saw this tip of using a feather to clean the vanes of a capacitor in an old radio book many years ago and through I'd share it with you. If this helps you please let me know. Kind regards ... Andy gw0jxm ~~~~ ~~~~~~~~~~~ ~~~~ In this series of 'About Radio' I want to show you a circuit diagram for a radio and talk you through what each component is there for. Here's the full link to 'About Radio ... Part 1 by Andy Davies. Removing the chassis.' http://www.youtube.com/watch?v=1WzbAmm_oF0 Here's the full link to 'About Radio ... Part 2 by Andy Davies. Data sheet and DC components.' http://www.youtube.com/watch?v=lYgJSlEHj1I Here's the full link to 'About Radio ... Part 3 by Andy Davies. HT smoothing.' http://www.youtube.com/watch?v=2EaAG2HXgns HD Link to part 3 http://youtu.be/2EaAG2HXgns?hd=1 Here's the full link to 'About Radio ... Part 4 by Andy Davies. AC ripple on the HT DC.' http://www.youtube.com/watch?v=Xp5KyJref2c HD link to part 4 http://www.youtube.com/watch?v=Xp5KyJref2c&hd=1 Here's the full link to 'About Radio ... Part 5 by Andy Davies. VHF input stage.' http://www.youtube.com/watch?v=ZzN8a_cqfPQ HD link to part 5 http://www.youtube.com/watch?v=ZzN8a_cqfPQ&hd=1 Here's the full link to 'About Radio ... Part 6 by Andy Davies. Grid bias & tank circuits.' http://www.youtube.com/watch?v=y8ahccwnqfo HD link to part 6 http://www.youtube.com/watch?v=y8ahccwnqfo Here's the full link to 'About Radio ... Part 7 by Andy Davies. A closer look at the tank circuit.' http://www.youtube.com/watch?v=GXUh_h86FHc HD link to part 7 http://www.youtube.com/watch?v=GXUh_h86FHc&hd=1 Here's the full link to 'About Radio ... Part 8 by Andy Davies. Intermediate Frequency.' http://www.youtube.com/watch?v=IvyQEQ24x1A HD link to part 8 http://youtu.be/IvyQEQ24x1A?hd=1 Here's the full link to 'About Radio ... Part 9 by Andy Davies. Ratio Detector AVC feature http://www.youtube.com/watch?v=BI9xUiUBvCs HD link to part 9 http://youtu.be/BI9xUiUBvCs?hd=1 Here's the full link to 'About Radio ... Part 10 by Andy Davies. Ratio Detector, AF Detection. http://www.youtube.com/watch?v=xlBsZJJEMqQ HD link to part 10 http://youtu.be/xlBsZJJEMqQ?hd=1 If you're interested in this series of videos then I recommend that you also take a look at Rick McWhorter's channel. This is the full link to one of the videos by Rick McWhorter http://www.youtube.com/watch?v=IWxeWnnU4i0 (AllAmericanFiveRadio) Do download his book, it's free but the information is priceless! Rick has put a huge amount of effort and a lifetimes worth of experiences into his videos, I think you find them interesting and entertaining, but be warned, you'll get hooked! I have.
Views: 15651 AndyDaviesByTheSea
220 V AC to 5 V DC CONVERTER (Regulated) || BTech 1st Year Project || USING LINEAR VOLTAGE REGULATOR
 
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Most of the electronic devices runs on a DC power supply of 5 V or 9. But we get an Alternating Current of around 220 V in our home. So for all practical purposes like charging a phone or running a computer this AC needs to be converted into DC. A rectifier does this work after the desired voltage is reached by stepping the AC down using a transformer. The DC thus obtained is not regulated and are full of ripples. These ripples are filtered using a capacitor or inductor or both. Further using a linear voltage regulating IC we can get a smooth and constant DC output. Watch this video to know how to make the circuits. Download link for the CIRCUIT DIAGRAM : https://drive.google.com/file/d/1aylKa5kvRZIyNkfvu_EiNM92qVXwiopO/view?usp=drivesdk Previous video : https://youtu.be/GqD2GveFL-Q SUBSCRIBE: https://www.youtube.com/TechnoLodgy Lets get social : Catch on FACEBOOK: https://www.facebook.com/tlodgy/ TWITTER: https://twitter.com/techno_lodgy INSTAGRAM: https://www.instagram.com/techno_lodgy/ Catach me on INSTA : https://www.instagram.com/insta_nirmal/
Views: 790 Techno Lodgy
#135: Measure Capacitor ESR with an Oscilloscope and Function Generator
 
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This video discusses how to measure the ESR (equivalent series resistance) of a capacitor using an oscilloscope and function generator. All of the capacitors tested in this video were 220uF electrolytic caps. In reality, the resistance in the plates of a dried out electrolytic capacitor can't be modeled as a simple series resistor, but for the purposes of identifying good from bad, this simplification works fine. In the video, I show the ESR meter that I made in 2006. The video for that is here: http://www.youtube.com/watch?v=bmYAgat-sOQ A copy of the video notes can be found here: http://www.qsl.net/w/w2aew//youtube/Measuring_capacitor_ESR.pdf
Views: 145285 w2aew
Making a Full Bridge Rectifier
 
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A full bridge rectifier is one of the main building blocks of AC to DC converters. You can read my articles here: http://www.electroboom.com/?p=544 Follow me on Facebook: http://www.facebook.com/ElectroBOOM Support ElectroBOOM at Patreon: http://patreon.com/electroboom Follow me on Twitter: https://twitter.com/ElectroBOOMGuy By: Mehdi Sadaghdar
Views: 3181273 ElectroBOOM
dc to dc boost converter
 
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boost converter (step-up converter) is a DC-to-DC power converter steps up voltage (while stepping down current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a transistor) and at least one energy storage element, a capacitor, inductor, or the two in combination. To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter). Please visit my web page for more details ................. http://starlitele.com/ https://www.facebook.com/starlitelectronics/
Views: 140 Starlit Electronics
Vintage Lab Power Supply Rebuild (7) – Design Consideration
 
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Still taking a step or two back from recklessly rebuilding the vintage power supply I gutted (link below), I’m going through a few design considerations regarding the transformer, the rectifier, the main filter capacitor and the linear regulator itself. If I had done that earlier I would have spared myself breadboarding a completely useless five ampere L200 based linear regulator … Part seven is mainly about calculating maximum and minimum voltages, worst case power losses and required filter capacitor sizes. I’m also drawing up some design constraints based upon the whole thing to be “vintage”. Anyway, I discover that a bigger filter capacitor is not necessarily better (power loss wise) and something simple as transformer tap switching does have its pitfalls. UPDATE: Part eight is available now (see link below) 00:00 Initial design: Transformer, bridge rectifier, filter capacitor and linear regulator – that easy, but is it? 03:06 Worst case scenario: Maximum voltage at no load – what voltages do the parts have to withstand 09:32 Worst case scenario: Minimum voltage at maximum load – what is the minimum size of the capacitor 29:06 Worst case scenario: Maximum voltage at maximum load – what is the maximum power dissipation (too much) 39:51 Adding a transformer tap switch: Redesigned design – the initial design dissipated too much power 42:00 Worst case scenario: Maximum voltage at maximum load (again) – what is the maximum power dissipation (better) 49:47 Optimization: Capacitor size – enter the MS Excel spreadsheet 1:00:43 Optimization: Regulator dropout voltage – the less the better, even if there is more than enough input voltage 1:03:46 Factoring in the ripple current: Another capacitor constraint – don’t cook your main filter cap 1:18:09 Transformer tap switch: Switching voltage – it has to be dynamic 1:23:14 Summary Links: Vintage (1983) Lab Power Supply Teardown – With a Little Smoke: https://youtu.be/P1JIkpT76wY Vintage Lab Power Supply Rebuild (1) – Intro, Stripping, Panel Instruments: https://youtu.be/cwGTh5Y8_ac Vintage Lab Power Supply Rebuild (2) – IEC Socket, Fuse Holder, Transf., Rectifier: https://youtu.be/2MQkyH62ans Vintage Lab Power Supply Rebuild (3) – Reassembling the Case: https://youtu.be/IC5snmFPdRw Vintage Lab Power Supply Rebuild (4) – Rewiring the Mains Voltage Side: https://youtu.be/RK4Sg7OoLAA Vintage Lab Power Supply Rebuild (5) – Rewiring the Low Voltage Side: https://youtu.be/pAXDmoCFo9k Vintage Lab Power Supply Rebuild (6) – Characterizing the Old Transformer: https://youtu.be/lwdzdGoyFCE Vintage Lab Power Supply Rebuild (8) – Old Transformer Tap Switch Circuit: https://youtu.be/n4Y8JwObhi0 Vintage Lab Power Supply Teardown and Rebuild: https://www.youtube.com/playlist?list=PLwq-2MnM58FIU1IyXiRY-icVybz4Ss88_ Small Project: Constant Resistance 24V/100W AC/DC Electronic (*) Load – Part 1: https://youtu.be/sFYHVK4ngXE Small Project: Constant Resistance 24V/100W AC/DC Electronic (*) Load – Part 2: https://youtu.be/Xl1ccdrZ2GE

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