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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: 11698 nptelhrd
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: 4198 katkimshow
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: 318654 EEVblog
DC Bus voltage ripple
 
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voltage.
Views: 490 davidtsuinw
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: 2808 nptelhrd
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: 4680 Texas Instruments
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: 3777 Learn Tech
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: 167508 EEVblog
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: 67606 fixitdaz
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: 3680 nptelhrd
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: 1618511 Nthefastlane
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: 10253 TefaTronix
Why electrolytic capacitors are actually kinda shitty 💩
 
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Electrolytic capacitors are common, but knowledge of their limitations is uncommon. A demonstration is shown highlighting the difference in performance between electrolytic and ceramic capacitors in power supplies. Other topics discussed in the video: Electrolytic capacitor construction, ceramic capacitors, ESR, ESL, impedance curves, why "0.1uF", and more. Webpage: http://www.afrotechmods.com Twitter: http://www.twitter.com/Afrotechmods Facebook: http://www.facebook.com/Afrotechmods
Views: 195966 Afrotechmods
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.
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: 61455 EEVblog
Jognic's Automatic Assembly Testing Machine for AC Capacitors
 
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Manufacturer & Supplier of LT Assembly Machine. Our product range also comprises of CVT Capacitor Winding Machine, MPP Capacitor Winding Machine and HT Automatic Capacitor Winding Machine Catalog.
Views: 195 Business Video
DC - DC Converter  Failure analysis - Electronic Repair
 
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This DC converter had worked for about one year before failing. It was powering an antenna and Ethernet switch which drew around 0.5 Amp.The input voltage was nominally 12 volts from a solar panel and the output 24 volts. The converter is based on the common UC3843 chip.With no load the unit operates OK with 24 volts output. As soon as the load is applied the output voltage drops. On visual inspection the problem appears to be the input capacitor. Examining the capacitor under a microscope confirms it is damaged. The capacitor is also tested with a capacitance meter and an ESR meter. The capacitor is replaced and the converter tested for correct operation. Click Here to Subscribe http://bit.ly/1nformatica Digital Microscope http://bit.ly/USBuscope Good source of electronic parts: http://bit.ly/ElecComps DISCLAIMER: Unless otherwise stated all products shown in this video have been purchased personally. The description and video may contain links to products which might be affiliate links, so if you click on one of the product links I could receive a small commission. This does not affect the price you pay. If you do purchase through my affiliate link this will help fund future videos, thank you for your support! #1nformatica
Views: 1449 1nformatica
-+ 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: 136 Linda Feng
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: 306543 Afrotechmods
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: 21967 Future Electronics
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: 22983 Keysight Labs
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: 79457 VPT Tech Videos
AC Ripple in DC Battery Banks, where does it come from ??
 
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Enjoy my videos on Youtube https://www.youtube.com/user/NoMainsPowerNoProble Never Be Without Power again. My Three most used sayings are. 1) A house roof looks unfinished until it has solar panels on it. 2) A man is not looking after his family until he is producing his own power. 3) Solar systems can be kind of pricey at first. Having power when no one else does, PRICELESS My videos are for information only, all work should be done by licensed contractors. Please read and understand description before viewing this video. Thank you By viewing the video you agree to the copyright act. You also agree to the copyright act as defined in the description of this video. Please feel free to enjoy my Off-Grid / Grid Hybrid system and my LED lighting videos. as well as my many How to videos. Video edited with cyberlink powerdirector Music Provided by Licensed under a Creative Commons license Purple Planet Music: http://www.purple-planet.com and or Music: http://www.bensound.com Remember if the power goes Out Then only the people that Prepared will have Power and Lights. And because of the cost. They have just enough for there needs. NOT YOURS. Please enjoy. Sharing a link to my videos is fine. Do not Download then Re Upload my videos in part or full without my written consent. Copyright 2017 All Rights Reserved. letter of demand for breach of copyright followed by full legal action for anybody breaching the copyright act. Warning!!! - Any person and/or institution and/or Agent and/or Agency of any governmental structure including but not limited to the United States or The Australian Federal and State Governments also using or monitoring/using this website or any of its associated websites, you DO NOT have my permission to utilize any of my profile information nor any of the content contained herein including, but not limited to my videos or photos, and.../or the comments made about my photos or any other "picture" art posted on my profile. You are hereby notified that you are strictly prohibited from disclosing, copying, distributing, disseminating, or taking any other action against me with regard to this profile and the contents herein. The foregoing prohibitions also apply to your employee, agent, student or any personnel under your direction or control the contents of this profile are private and legally privileged and confidential information, and the violation of my personal privacy is punishable by law. ALL RIGHTS RESERVED WITHOUT PREJUDICE This is my Hobby. It just happens to power my house. I also Design and build systems That work.
Inductor basics - What is an inductor?
 
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The basics of how inductors work, a demo showing an inductor filtering out high frequency signals, a quick low pass LC filter, and a demo showing the magnetic field created around inductors. Webpage: http://www.afrotechmods.com Twitter: http://twitter.com/Afrotechmods Facebook: http://www.facebook.com/Afrotechmods/
Views: 1294050 Afrotechmods
Noise level in DC linear electronics laboratory power supply / electrical noise
 
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Short video about how to find the noise level using oscilloscope in its AC coupling function and comparing the trace with Siglent SDG2000X function generator. If you liked the video or if it was worthy to you, don't forget to give a LIKE. You can also join the Channel for more interesting videos about electronics workshop. Thanks for watching it!
Views: 852 Bob. Kalpon
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: 9071 KainkaLabs
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: 36699 Schematix
Rainbow and big 6 kW DC motor testrun on variac
 
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20 seconds of some segments of today's rainbow while driving back from work. This was recorded on West Coast Road, Parrs Park, Glen Eden. After watching Larry's video HDXFH where he tests his F&P magnet motor. I had to crank up my 6 kW DC motor and do a load test on my repaired 10 Amp variac. While shifting stuff around I found this 2 kVA transformer and may as well give that a test run too. Wired it up a 35 Amp rectifier block and buffer capacitor, DC ammeter and release the electrons. link to HDXFH http://youtu.be/CNYe5fNcd8s I am planning to make a variable frequency drive with this motor and couple it to a three phase AC motor and excite that with some capacitors, and hope that works.
Views: 21425 RODALCO2007
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://www.amazon.com/3M-08946-Clear-Silicone-Paste/dp/B005RNEH5O/ref=sr_1_1?s=automotive&ie=UTF8&qid=1494301087&sr=1-1&keywords=silicone+paste Digital Multimeter https://www.amazon.com/Fluke-FLUKE-87-V-Digital-Multimeter/dp/B00T3LZLFG/ref=sr_1_1?s=automotive&ie=UTF8&qid=1494296497&sr=1-1&keywords=fluke+87v Automotive Relay Tester https://www.amazon.com/Boruit-Electronic-Automotive-Diagnostic-Battery/dp/B074KHFVM8/ref=sr_1_12?ie=UTF8&qid=1506508183&sr=8-12&keywords=Automotive+Relay+Tester PicoScope PP923 Standard Automotive Kit https://www.amazon.com/PicoScope-PP923-Standard-Automotive-Kit/dp/B01LW97HBW/ref=sr_1_3?ie=UTF8&qid=1497250141&sr=8-3&keywords=picoscope Pocket-Sized Digital Storage Oscilloscope https://www.amazon.com/SainSmart-Pocket-sized-Handheld-Oscilloscope-Bandwidth/dp/B0057M7YLE/ref=sr_1_1?ie=UTF8&qid=1497251308&sr=8-1&keywords=pocket+oscilloscope+dso Alternator Decoupler Pulley Tool Kit https://www.amazon.com/Gates-91024-Alternator-Decoupler-Pulley/dp/B0053OSBUY 17mm hex socket https://www.amazon.com/Titan-Tools-15617-Drive-Socket/dp/B004W81LPY/ref=sr_1_2?ie=UTF8&qid=1497251406&sr=8-2&keywords=17mm+hex+socket 1/2" Impact Wrench (low torque) https://www.amazon.com/Briggs-Stratton-6380-00-Impact-Wrench/dp/B01N6HBSA3/ref=sr_1_20?ie=UTF8&qid=1497251537&sr=8-20&keywords=impact+wrench+air 1/2" Impact Wrench (high torque) https://www.amazon.com/Milwaukee-Torque-Impact-Wrench-Friction/dp/B00GFUA6O4/ref=sr_1_20?ie=UTF8&qid=1497251450&sr=8-20&keywords=impact+wrench Breaker Bar https://www.amazon.com/Neiko-00206A-Premium-Breaker-Length/dp/B001222378/ref=sr_1_1?s=power-hand-tools&ie=UTF8&qid=1497251661&sr=1-1&keywords=breaker+bar WD-40 https://www.amazon.com/WD-40-100324-Multi-Use-Product-Spray/dp/B000NV8T5Y/ref=sr_1_1?s=industrial&ie=UTF8&qid=1497251756&sr=1-1-spons&keywords=wd+40+spray&psc=1&smid=AMO63F4FY7B3J Autel MaxiDAS DS808 https://www.amazon.com/MaxiDAS-Diagnostic-Support-Injector-Coding/dp/B071L1GH89/ref=sr_1_3?s=automotive&ie=UTF8&qid=1497251804&sr=1-3&keywords=autel+ds808 haynes repair manual https://www.amazon.com/s/ref=nb_sb_ss_i_5_6?url=search-alias%3Daps&field-keywords=haynes+repair+manual&sprefix=haynes%2Caps%2C767&crid=34COIZJJ168 test light https://www.amazon.com/OTC-3636-Heavy-Duty-Circuit-Tester/dp/B002YKFA0O/ref=sr_1_1?ie=UTF8&qid=1497252028&sr=8-1&keywords=otc+test+light Power Probe III https://www.amazon.com/Power-Probe-III-Clamshell-Red/dp/B00G4YUWMC/ref=sr_1_3?ie=UTF8&qid=1497252050&sr=8-3&keywords=power+probe 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: 404938 Junky DIY guy
KEMET Press-Fit Aluminum Electrolytic Capacitors | New Product Brief
 
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View full article: https://www.allaboutcircuits.com/new-industry-products/kemet-press-fit-aluminum-electrolytic-capacitors-new-product-brief/ KEMET’s Press-Fit Aluminum Electrolytic Capacitors eliminate soldering problems and allow for quick exchange during field service while retaining the same vibration capability as soldered snap-in capacitors. The capacitors are designed for reliable performance in demanding energy storage and power conversion applications, with voltage ratings up to 550 VDC and high surge voltage and ripple current capabilities. They are rated for a service life up to 18,000 hours at 85°C or up to 9000 hours at 105°C. Capacitors are available in 4-pin or 5-pin configurations with diameters from 35 to 50 mm. Despite their solderless application, KEMET Press-Fit Aluminum Electrolytic Capacitors offer reliable electrical contact and have a retention force of 62 N per pin and meet BS EN 60352-5 requirements. For more information, as well as all the latest All About Circuits projects and articles, visit the official website at http://www.allaboutcircuits.com/ Check out Mouser's profile on All About Circuits and see more product briefs and articles at https://www.allaboutcircuits.com/author/mouser-electronics For more new products at Mouser, visit https://www.mouser.com/new/ Subscribe on YouTube: https://www.youtube.com/c/AllAboutCircuitsVideo Like us on Facebook: https://www.facebook.com/allaboutcircuits Follow us on Twitter: https://twitter.com/AllAboutCircuit Follow us on LinkedIn: https://www.linkedin.com/company/allaboutcircuits
Views: 206 All About Circuits
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: 376 YS Yogesh Shende
True-RMS Measurement Pt.1: AC vs. AC+DC
 
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Roger demonstrates the difference between so called "True-RMS (only AC)" and "True-RMS AC+DC" multimeters and a simple averaging. Only "True-RMS AC+DC" multimeters give you a reliable measurement and the differences between the three tested multimeters are quite striking. There remain some error-sources even with a good True-RMS AC+DC multimeter which will be investigated in Pt.2 of this video. 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: 8219 KainkaLabs
How to make 5 volt DC power supply from AC using 7805 regulator
 
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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. 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 V 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 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: 11959 Tech StudyCell
Motor Age How2 #3:  Using AC Coupling On Your Scope
 
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Hooray! We finally get to capture a REAL voltage trace on our scope! And on top of that, we'll learn how to use AC coupling to eliminate the DC component to actually test the alternator's diode assembly. Be sure and SUBSCRIBE to our channel so you'll be the first to know when new information is available! @@@ FOLLOW US ON @@@ Facebook: https://www.facebook.com/MotorAgeMagazine/ Twitter: https://twitter.com/Motor_Age Instagram: https://www.instagram.com/motor_age VISIT OUR WEBSITE! http://www.motorage.com TRAINING FOR PROFESSIONAL TECHNICIANS! Motor Age Training: http://www.passthease.com NACE Automechanika 2017: http://www.searchautoparts.com/automechanika-chicago Click this link to subscribe to the print or digital edition of Motor Age! http://bit.ly/MotorAge_freesub_YT @@@@@@@@@@@@@@@@@ Due to factors beyond the control of Motor Age, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Motor Age magazine (UBM Americas - Automotive Group) assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Motor Age 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 Motor Age, 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 Motor Age magazine or its corporate parent, UBM Americas.
Views: 6249 Motor Age
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: 2507 AndyDaviesByTheSea
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: 3080846 ElectroBOOM
IGBT based Rectifier for VFD / VVVF - Concept
 
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IGBT rectifier operation. The concept of IGBT, PWM based Rectifier for VFD/VVVF for train engine, an electric locomotive is explained in the video tutorial. IGBT and pulse with modulation (PWM) based rectifier for variable frequency drive or variable voltage variable frequency system is designed using IGBT and diode both in the rectifier along with one inductor at the input supply. IGBT is switched ON and OFF at high frequency to control the input current, voltage across inductor and output DC voltage. It provides many advantages like unity power factor, very low harmonics, variable and controlled DC voltage, suitable for large voltage variation and frequency at the input, and power regeneration during application of the brake. Use of IGBT in the rectifier, Operation of IGB and diode to control input current and charging of the capacitor is explained. Educational video on electricity and electrical engineering 292 by G K Agrawal (Gopal Krishna Agrawal). The lecture is given by a person with industrial experience and useful for electrical, electronic communication and power electronics engineering students, project work and also Physics students. About G K Agrawal - B.SC. (Physics, Chemistry, Math); B.Tech. (Elect. Eng.); 37 years of experience in industrial/power sector product design. The concept of IGBT, PWM based Rectifier for VFD/VVVF for train engine, an electric locomotive is explained. IGBT and pulse with modulation (PWM) based rectifier provide many advantages like unity power factor, very low harmonics, variable and controlled DC voltage of DC link, suitable for large voltage variation at the input, and power regeneration during application of the brake. Operation of IGB and diode to control input current and charging of the capacitor is explained. IGBT based rectifier. IGBT based rectifier for VVVF. PWM based IGBT rectifier operation. Use of IGBT in rectifier.
Views: 3134 G K Agrawal
Mod-06 Lec-21 Space vector based bus-clamping PWM
 
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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: 9482 nptelhrd
Rectifier and Filter (Halfwave - Fullwave rectifier)(working, Operation, waveform) Engineering Funda
 
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This video includes half-wave rectifier, full-wave center tapped rectifier, full-wave bridge rectifier and capacitor filter, inductor filter and Pi filter. RECTIFIER CIRCUIT The circuit which converts AC in DC is called Rectifier Circuit. There are two types of Rectifier Circuit: 1. Half Wave Rectifier 2. Full Wave Rectifier The unwanted AC-components at the output of Rectifier can be filtered using filter circuits. The smooth the output voltage of Rectifiers, Filter Circuit are used. The output of a Rectifier is not a pure DC, it is still having some AC components that we need to filtered out. This AC component removal action is done by Filter Circuit. Filters - Basic Concepts, Shunt Capacitor Filter with Half Wave Rectifier, Shunt Capacitor Filter with Full Wave Rectifier, Series Inductor Filter with Full Wave Rectifier, Series Inductor Filter with Half Wave Rectifier explained with waveform. For more details and material on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in And SUBSCRIBE for more science videos Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Power Electronics.
Views: 24289 Engineering Funda
iHP Intelligent High Power System - details
 
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The Artesyn iHP series is the only configurable high power system with medical and industrial safety approvals that offers ground-breaking control and flexibility. The iHP system consists of a power case and up to four output modules in the twelve-kilowatt case or up to eight output modules in the twenty-four-kilowatt case. The power rack houses EMC filtering and digital front-end power factor correction or PFC circuits, input/output connectors and related hardware. The iHP power system offers efficient PFC and low total harmonic distortion over a wide range of loads. It uses a multi-phase continuous mode boost PFC architecture, resulting in ripple current cancellation that offers lower EMI and extends the life of electrolytic capacitors. The user can configure the iHP system for single-phase or three-phase input. The rack also houses a communications board which provides various electrically isolated user interfaces and handles internal communication between the intelligent PFC and the modules. The outputs can be configured as voltage or current sources and customized to the application’s requirements from a range of standard modules provided by Artesyn. These modules can be connected in series or parallel, while achieving high accuracy voltage and current sharing. The voltage and current ramp time, as well as loop compensation, are also programmable Artesyn offers various options for analog and digital interfaces, including CANbus, Ethernet and RS485. Digital control enables the use of Artesyn’s high level PowerPro configurable GUI to control and monitor all functions on one or multiple iHP systems. The PowerPro GUI resides in the cloud so can be operated on any device connected to the internet. The PowerPro GUI also incorporates graphical script creation that allows users to write their own process control routines. The iHP series employs average current mode control, which has distinct advantages over peak current mode control where fast transient response and tight regulation is required. ACM control offers excellent stability over a wide load range, even when the converter transitions from discontinuous mode in to continuous mode due to high current loop gain. It directly controls the output inductor current and provides excellent line and load regulation. For more information, please visit www.artesyn.com
Views: 237 Artesyn Embedded
EEVblog #279 - How NOT To Blow Up Your Oscilloscope!
 
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How NOT to blow up your Oscilloscope. And how NOT to blow up your Arduino. Your oscilloscope ground clip lead can be a potential accident waiting to happen. Why? And how do you avoid it? The basics about measuring mains earth referenced equipment with your oscilloscope.
Views: 460566 EEVblog
AVHzY CT 1 USB Meter Tester Current Tester Voltage Detector Review!
 
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This is USB Meter Tester Current Tester & Voltage Detector is an amazing high quality product, that will give you real time and precise readings for your testing or hobby needs! The color LCD screen is crisp and clear and the display is bright too! You can record your tests in 5 groups for later comparisons. If you're interesting in purchasing this product click the link below and don't forget to use my discount code so you can save some $$! https://www.amazon.com/gp/product/B073R7YRM9/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 My Facebook group https://www.facebook.com/groups/1338983446228601/ Also they are always updating firmware of this device so here: http://www.avhzy.com/wp-content/uploads/2017/07/CT-1-V1.75.zipis **Doing such upgrade is at users own risk, reviewer nor manufacturer are not liable! This is a link to their website: http://www.avhzy.com/ Here is the manual download PDF: http://www.avhzy.com/wp-content/uploads/2017/07/AVHzY-CT-1-Manuals-EN.zip Specs: Main Control IC:STM32 F072 Display screen:TFT 1.44″ 128*128 Voltage Current Range :DC 3.7-25V 0-5A Voltage Current Resolution: 0.0001V 0.0001A Voltage Current Accuracy:0.1%+2d Current Sample Point:High-side Internal Resistance:32mOhm (After 1000 cycles) Quiescent Current:1mA (At DC 5V) Self-Power Solution:DCDC D+D- Voltage Sample:Support Micro ESR Test:Support A-C C-C ESR Test:Support (Reference only) 4-line Support:Support QC2.0 QC3.0 PD Trigger:Support Clock & Standalone Temp Sensor:Support USB Firmware Update:Support MFI Test:Support (Reference only) C-C Device Test::Support Time Accuracy:0.002% Thanks for watching, Take care!
Views: 10571 Charles BridgTec
True-RMS Measurement Pt.2: Frequency Range and Crest Factor in Theory
 
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Roger demonstrates the importance of the frequency range and the input ampltiude in True-RMS measurements. Furthermore the crrest-factor is explained and how it can There remain some error-sources even with a good True-RMS AC+DC multimeter which will be investigated in Pt.2 of this video. AD736: http://www.analog.com/en/products/linear-products/rms-to-dc-converters/ad736.html#product-overview Crest-factor: https://en.wikipedia.org/wiki/Crest_factor Compensated Input-Attenuator: https://electrosome.com/compensated-attenuator/ 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: 2912 KainkaLabs
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: 44 Neela M
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: 7 Technical Army
An Electrolytic-Capacitor-Free Single-Phase High-Power Fuel Cell Converter
 
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09591912372 [email protected] An Electrolytic-Capacitor-Free Single-Phase High-Power Fuel Cell Converter With Direct Double-Frequency Ripple Current Control
Views: 18 Neela M
Mod-02 Lec-07 Applications of voltage source converter -- II
 
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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: 7109 nptelhrd
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: 1146 Samir Sogay
#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: 817 The Sales Engineer
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: 15 LeMeniz Infotech