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: 180062 EEVblog
Circuit building block time. The capacitance multiplier and how it gives almost negligible power supply ripple compared to a voltage regulator. Whiteboard theory and then some bench demonstrations and experiments. Plus a twist at the end that proves that the "Capacitance multiplier" is perhaps one of the most mis-named circuits of all time. Forum: http://www.eevblog.com/forum/blog/eevblog-1116-the-capacitance-multiplier/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog Stuff I recommend: https://kit.com/EEVblog/ Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
Views: 120126 EEVblog
A purpose of this video is to show you a measurements of different DC power supplies that we widely use now days. By building power supplies for long time, I have found a concept that works for me. It is a concept that is well known to the engineers, but many people show a considerable ignorance in this field, so I thought this is worth mentioning. Since theory about ripple and noise can be found easily elswhere, I did not want to exagurate, but to show instead, a power supply differences, and how to build good, low noise power supply using simple and cheap techniques. 1. Use isolation transformer 2. Use multiple ESR electrolicit capacitors for a capacitor bank 3. Use LM723 as a voltage stabiliser! 4. Use bypass capacitors on the output Of course, there is always something else that could be told about this subject. It requires more deeper analysis. Neverthless, I hope that by giving a small guidelines, one can finish the job successfully.
Views: 246 nebojsa kovacevic
TI's Bob Hanrahan demonstrates how to measure noise when testing power supplies. For more videos on testing power supplies, check out: Overview: www.ti.com/testingpoweroverview Measuring efficiency: www.ti.com/measuringefficiency Measuring stability: www.ti.com/measuringstability
Views: 69296 Texas Instruments
An old dusty PC was making some terrible noise. The noise was present for around a few minutes at the first startup, than it disappeared. The loud sound was generated by the power supply unit's (PSU) cooler fan. The fan was cleaned, the axle lubricated and the noise disappeared.
Views: 114435 furulevi
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: 1338 Bob. Kalpon
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: 87174 VPT Tech Videos
Watch as our technician demonstrates a Siemens Simodrive 611 Card component level repair! In the video, our technician performs a full load test using our custom engineered Siemens Simodrive Test Stand to confirm full functionality. Upon inspection, the customer reported that the card would not turn on. To check if there was an issue with the power supply on the board, our technician used a volt meter and found that there was a ripple on the supply. From there, our skilled technician made the necessary repairs to ensure proper functionality. Want to see more videos? Subscribe to our YouTube Channel! If you're looking for a quote or wish to talk with a technician, head on over to our website at www.gesrepair.com Transcription: At Global Electronic Services we repair industrial electronics, motors, servo motors, hydraulics, and pneumatics down to component level. We specialize in repairing old and obsolete equipment that is no longer supported by the OEM. Because we have so many custom engineered test stands, we can load test your old and obsolete units to ensure they are repaired correctly and that the quality surpasses OAM standards. Here we have a card out of a Siemens Simo drive series servo drive. The customer has sent this unit in for repair, and reported that the servo drive wouldn't power up. Upon phone consultation with the customer, the technician has gone step by step walking them through a checklist to determine that the servo card is where the problem is, and that it has a power supply issue. To check the power supply section of the board, the technician checked it with a voltmeter. He found that there was a ripple on the supply. The most obvious cause for the ripple is the power supply and noise filter capacitors. After the technician has finished changing out the capacitors, he will now load test in our siemens simodrive test stand. First he will remove the known good servo card and then replace with the customers servo cart to see if changing out the capacitors has resolved the power supply issue. He will turn on the power, and check the cards display. The unit still appears dead. As you can see, there is no display. Without the use of our custom test stand to actually function test the servo card, the unit could have shipped out to the customer repaired, as just powering up the card on a bench after changing the capacitors would have indicated the problem was resolved. The technician now removes the unit from our test stand. Now the technician will check the switching portion of the power supply, because we know that the back panel from our test stand is providing the necessary external power to the card, and the card is still not turning everything on inside. This indicates the digital switch IC is defective. Now the technician is changing out the IC, and then we will be ready to function test the servo cart again in the test stand. The card is ready to test. The technician is now inserting the card back into the test stand and will now power up the servo drive. Success, we have a working card. Now we will engage the servo motor to load test the unit. As you can see everything is working properly. This unit is ready to go back to the customer.
Views: 13290 Global Electronic Services
Amit Patel - Senior Design Engineer, Power Products When it comes to powering noise-sensitive analog/RF applications, low dropout (LDO) linear regulators are generally preferred over their switching counterparts. Low noise LDOs power a wide range of analog/RF designs, including frequency synthesizers (PLLs/VCOs), RF mixers and modulators, high speed and high resolution data converters (ADCs and DACs) and precision sensors. Nevertheless, these applications have reached capabilities and sensitivities that are testing the limits of conventional low noise LDOs. For instance, in many high end VCOs, power supply noise directly affects the VCO output phase noise (jitter). Moreover, to meet overall system efficiency requirements, the LDO usually post-regulates the output of a relatively noisy switching converter, so the high frequency power supply rejection ratio (PSRR) performance of the LDO becomes paramount. With its ultralow output noise and ultrahigh PSRR performance, the (http://www.linear.com/product/LT3042) LT3042 can directly power some of most noise-sensitive applications while post-regulating the output of a switching converter, without requiring bulky filtering.
Views: 3219 LinearTechnology
Just a quick warning to not do what I've done in the past and shock the crap out of yourself on power supply filter caps! ---------- Music by Kevin MacLeod (incompetech.com) Licensed under Creative Commons "Attribution 3.0" http://creativecommons.org/licenses/by/3.0/"
Views: 8742 Electronic Doberman
Purchasing a cheap switching power supply from AliExpress can backfire - such as when spurious noise pops up on your LeCroy oscilloscope!
Views: 9845 Tam Hanna
I've been watching quite a number of #DIY #homeMade method on #YouTube #Videos about #HowTo remove noise from the LM386 audio amplifier circuit which can be done in a few ways. But here experimented a new way using mini step down transformer to remove the distorted sound and it turns out to be very effective which is near 100% free from noise. The problem with the LM386 IC is very sensitive to ground loop voltage. Even our fingers could actually disturb the signal. As you can see the crackling noise and sometimes hissing noise coming out even if there is no sound to amplifier (inactive states). But after using the step down transformer at the input to filter the noise and once again it is regulated at the output using coupled inductor the sound is simply amazing. In inactive states (no music / sound) the distorted noise is almost nothing which i think this is one of the perfect solution used by audio amplifier manufacturer Read the review circuit schematic diagram: http://howtodosteps.blogspot.my/2017/04/lm386-amplifier-circuit-schematic.html Watch alos audio amplifier electronic circuit: Hopefully this video gives an idea how to reduce / removed noise from the LM386 amplifier circuit. How to make guitar amp circuit dual speaker - DIY 5 / 9 / 12 volt power https://www.youtube.com/watch?v=1SSpJtTWZqE How to make audio amplifier stereo TEA2025B - (simple easy) https://www.youtube.com/edit?o=U&video_id=WrcaWJVcQBk DIY headphone mini amplifier LM386 complete noise removal https://www.youtube.com/watch?v=0VRHnImy9Xg Mini 5 Volt Amplifier using LM386 https://www.youtube.com/watch?v=BMviE1JzV2Y
Views: 24420 HowTo DIY homeMade Electronica
I thought it would be interesting to do a theory video on linear power supply design. I build up a simple low voltage supply to setup the framework for the larger and more powerful split rail linear power supply used by the (Nelson Pass) PassLabs F5 amplifier that’ll show up over the next couple of videos. I begin building up the F5 supply and we compare ripple voltage between a switch mode supply and linear supplies. I also cover how to select the proper filter capacitor with some basic algebra. I went a little nuts with GarageBand an made some techno music to go along with the time lapse build. Not my cup of tea, but it was fun to make anyway! Hope you guys enjoy this LONGER video. Send me something! : The Current Source PO Box 620241 Oviedo, FL 32762-241 Follow more stuff here: @tcurrentsource www.thecurrentsource.com
Views: 38837 The Current Source
Link for Pt.2: https://youtu.be/Y1NKW8xfdvs 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) Support Roger on Patreon: https://www.patreon.com/kainkalabs Support Roger on Patreon: https://www.patreon.com/kainkalabs Roger explains 4 sources of noise and on which ways they couple into sensitive circuits like AM radio-receivers or precision analog-circuits. There is a fifth source of noise with SMPS working in so-called "discontinous mode". Will be explained in Pt. 3 of this series. 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: 9260 KainkaLabs
How to measure the output ripple as well as improving filter methods for the ouput of a dc dc converter. Improve the output filtering with this video from Vicor Corporation. Learn the theory behind it and a step-by-step bench demonstration measuring output ripple. Be sure to subscribe to Vicor Corporation's channel for more videos. More videos on this topic are available on our DC- DC Converters playlist https://www.youtube.com/playlist?list=PLOFm1WdHpufBnZXwjxSU2qGSs5r_uEhav Visit us at: http://www.vicorpower.com/"
Views: 6290 Vicor Corporation
BUY NOW ONLINE https://bestservicesdelhi.com/shop?keywords=KORAD&olsPage=products%2Fkorad-ka3005d-precision-variable-adjustable-30v-5a-dc-linear-power-supply-digital-regulated-lab-grade PHONE -9266167080 , 9560777080 Complete digital control 10mV/ 1mA Resolution Low noise and ripple CV/ CC constant voltage and constant current mode OCP and OVP settings, constant protection mode 5 Sets of parameters can be stored and recalled Output switch control Power-off memory function Keyboard lock function #DC #POWER #SUPPLY
Views: 3405 Best Services Delhi
Bench Power Supply 30V 10A 110V Variable Output https://amzn.to/2pPuUhN This DC Power Supply features a very high quality variable 0-30V and current 0-10A. It comes with high reliability, low noise and circuit overload protection. Features: -Steady DC -All Metal Construction -Compact Design -Dual LED Display -Current mA Display -High Stabilized Output Voltage -Short Circuit Protection -Over Loading and Current Protection Specifications: -Size: 13.4 x 7.5 x 8.6 inch -Weight: 17 lbs Operating Conditions: -Supply Voltage: AC 110V -Frequency: 60Hz -Working Temperature: -10°C to 40 °C Stable Voltage: -The output voltage is between 0 and nominal value continuously adjustable -Voltage Stability: ≤0.01% +2mV -Load Stability: ≤ 0.01% +2mV -Recovery Time: ≤100μS -Ripple Noise: ≤1 MVRMS - effective value -Temperature Coefficient: ≤ 200PPM/°C Stable Current: -The output current is between 0 and nominal value continuously adjustable -Power Stability: ≤ 0.1% + 3mA -Load Stability: 0.2% + 3mA -Ripple Noise : ≤2mArms
Views: 148533 dial2fast
This course describes the steps necessary for troubleshooting and repairing a power supply that is producing unacceptable levels of audible noise. Possible causes are discussed and solutions are recommended. Take this course if your power supply is producing loud audible noise when tested in the final enclosure.
Views: 3765 Power Integrations, Inc.
Want to make sure that the medical equipment you design will do more good than harm? Then pay attention to the power supplies you use. Many industrial power supplies simply do not comply with the safety standards that govern diagnostic, monitoring and treatment equipment. These safety standards protect patients and healthcare providers from electrical shocks by enforcing strict requirements for electrical insulation, isolation voltages and leakage currents. The standards also require relatively large creepage and clearance distances. These requirements are known as “means of protection.” In general, power supplies that offer two means of patient protection meet the highest safety standards. These units are a safe bet in equipment or devices that make direct contact with patients. Medical power supplies are available in both switch mode and linear versions and in many different voltage and power ratings, package sizes and enclosure styles. Medically approved linear units are harder to find, but they are essential in applications that need very clean power with minimal electrical noise or ripple currents. To download the white paper, Selecting Power Supplies for Medical Equipment Designs, visit polytrondevices.com/medical.
Views: 227 Polytron Devices
This is a video regarding Ham Radio, sorry audio guys, still working on X32 videos! My MacBook power supply was introducing a lot of RFI noise into my radio while working 40 meter digital. To fix this I wound the power supply cord around a #31 toroid core with a 2.4" outer diameter. The core provided a large resistance on the wire in the frequency range of the ham bands to remove the RFI. Adding this core took the noise from an S5 down to an S2 or S3 which is about a 12dB-15dB reduction.
Views: 12884 Drew Brashler
HDPLEX 200W Linear Power Supply Ripple Test: Adjustable Rail A. Ripple test is performed at [email protected] (30W).
Views: 725 HDPLEX Fanless PC Case
Speedometer reads 20 mph in park. Transmission output speed sensor (vehicle speed sensor) codes. Transmission will not shift (2nd gear limp mode) from a bad alternator diode. Clean, strong alternator output is critical for vehicle electrical performance. Without it, you can run into all kind of strange symptoms that you may not necessarily associate with an alternator problem, and this case study is a perfect example. I also supply some general guidelines for ripple testing that can be applied to any make or model out there. Engine Performance Diagnostics chapter 1 page 27 Symptoms - speedometer moves off of zero with the vehicle stopped and in gear - check engine light (EGR fault code, unrelated) - transmission shifting problems Fix - replace the alternator (failed rectifier diode) Tests shown - how to check for AC ripple using a lab scope with AC coupling - identifying excessive AC ripple in a sensor voltage waveform - how to eliminate a failed alternator by disconnecting the control circuit - checking AC ripple at the alternator vs. at the battery Tools used - Autel MS908 MaxiSYS Automotive Diagnostic & Analysis System - USA Version https://www.jbtoolsales.com/autel-ms908-maxisys-automotive-diagnostic-analysis-system-usa-version#oid=1014_1 - PicoScope 4425 4 Channel Standard Diagnostic Kit http://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=60df1b5cf6e5582af6ff81c728f42d0d&go=http://www.aeswave.com/PicoScope-4425-4-Channel-Standard-Diagnostic-Kit-p9276.html Playlist - (Chapter 1) Misfire ID, Compression Tests, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DMM https://www.youtube.com/playlist?list=PL5E3AEC36DB838BB1 Related videos - How to test an Alternator (alternator not charging from a blown fuse) - Mazda https://youtu.be/--AdY8z1QfU - How to test an alternator (Chrysler Dodge Jeep) https://youtu.be/AvLbb48tQPw - Computer Controlled Alternator Testing - 2006 Mercury https://youtu.be/DHKF6v2QJhc - Battery keeps going dead (what to test before replacing) https://youtu.be/AA-vHbE1IA8 For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC 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 ScannerDanner LLC, 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 ScannerDanner LLC.
Views: 151723 ScannerDanner
SPB Series: DIN Rail Switching Mode Power Supplies The SPB series switching mode power supplies offer high power conversion efficiency and stable power supply with low noise and ripple and minimal heat generation. The switching mode power supplies can be easily clipped onto DIN rails or mounted using screws. The slim and compact design also allows space-saving installation. The series also features various safety and user-friendly features including terminal protection covers (SPB-060/120/180/240) and rising clamp type terminals (SPB-015/030). Various output power models are available for application in diverse environments. For More Details contact us on • Email Id: [email protected] Weblink: https://www.autonics.com/series/3000649
Views: 24 India Automation Yogi
This is a technical related video clip related to basic audio troubleshooting and minor repairs - How to test a DC power supply. All musicians should understand some basic technical fundamentals that will allow them to make repairs on their audio equipment as needed. Visit www.avcssguitarworld and check out our database of over 500 video clips, and over 200 Handouts for beginner Guitar and Bass players.
Views: 39143 AVCSSGuitarWorld
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. Example diodes on Amazon: http://www.amazon.com/exec/obidos/ASIN/B00W17LOBO/afromods-20 Check out my webpage for more handy electronics tutorials http://www.afrotechmods.com
Views: 348939 Afrotechmods
This is the waveform of the 12 V OUTPUT rail on my M4 ATX power supply. Volts/Div is set at 0.2, time/Div is 1us. It is roughly a 1.5 volt peak to peak spike/harmonic ringing at 2-4Mhz. Computer was tested on a bench, running on 120V to 12V switching PSU, and 12V battery, same problem. When moved into a car, effects other 12V electronics in the automobile such as amplifiers and monitors. Still persistent in bench (120V) bench equipment, but not as noticeable.
Views: 1973 Jigg007
Ok here it is, in this video I show how to modify a switchmode power supply for different voltage output, do some experiments and explain the basics of how they work. I know some other people have modified these, but never really explained how to do it, so I hope this sheds a bit more light on things. Sorry for taking longer to do this one, some of the footage became corrupted while doing this, but I manged to recover it all surprisingly without any visible glitches. Also I wasn't too happy with how some of it came out anyway so I had to redo those taking longer than I would have liked.
Views: 23797 CoolDudeClem
https://www.electronicthinking.com We're just getting started with the Applied Guide to Electrical Engineering and it is already shaping up to be quite a valuable way to learn electronics. This video shows exactly what happens when you add 10uF capacitors across the power supply lines to an analog front-end section of a digital storage oscilloscope that we are building in the 3rd month. I hope you learn valuable tips from the free videos such as this and there is even more in the full program.
Views: 26839 ElectronicThinking
Please watch: "Remove.bg - Easy background removal" https://www.youtube.com/watch?v=NNR2syhCyn0 --~-- After my dead motherboard and my friends dead motherboard and suspected dead power-supply, I got these 2 testers in order to be able to test such issues and debug them quickly without a struggle. For anyone of you who fixes his own or his friends computers this is a must small investment! Get yours on Amazon: Power-Supply Tester: https://amzn.to/2JpZwzA Motherboard Tester: https://amzn.to/2JoA5yf Get yours on AliExpress: Power-Supply Tester: http://bit.ly/2Jn5Nfr Motherboard Tester: http://bit.ly/2Q9TtSs ==================================== For questions and requests, email me to: [email protected] Facebook: https://goo.gl/JPsNdM Google+: https://goo.gl/9kFyJ4 Twitter: https://goo.gl/YrnbmE InstagramL https://goo.gl/r3pWsB Website: http://www.dimustech.net The Gear I use: https://www.amazon.com/shop/dimustech Want to help translate our videos to other Languages? https://www.youtube.com/timedtext_cs_panel?c=UChLFlc64P8-I3VE3atWogCw&tab=2 Disclaimer: Some of these links go to one of my websites and some are affiliate links where I'll earn a small commission if you make a purchase at no additional cost to you.
Views: 95 DimusTech
These are notorious for failing and taking out the computer. This one was showing a higher than optimal output on the 5v line. I opened it up and replaced the 5v regulator with a switching regulator that I have been using on drones without problems for years. I soak test it under load and test for drift and ripple. Made the case safe but easy to open for repairs and further changes. Will probably put a saver in there too just to be sure. Good luck all. Inspiration/help for this video: https://youtu.be/oxxZgwm8lIs https://youtu.be/IIQLL88LcXk Regulator Used: MP1584 Adjustable 3A DC DC Step Down Converter EBay.
Views: 1695 Plan C
Type of Product DC Regulated Power Supply Output Voltage 0-30 V Output Current 0-5 A No. of Output Single Output Power Supply 230 V ± 10% AC , 50/60 Hz Accuracy ± 0.5% + 2 Digits Load Regulation CV ≤ 0.5% +10 mV Line Regulation CV ±0.5% +10 mV Ripple and Noise 100 mV RMS Display 3½ Digit, 0.5'' High Brightness LED Meter Two Digital meter to monitor the output Voltage & Current of output. Protection Against short circuit & Over load
Views: 179 joyofdreams entertainment
Dave troubleshoots a Soniq L32V12A 32" HD LCD TV Part 2: https://www.youtube.com/watch?v=orFkIXO0uUI Forum: http://www.eevblog.com/forum/blog/eevblog-630-soniq-lcd-tv-troubleshooting-repair/ 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: 67455 EEVblog
1000W power supply that everyone should have. Check links below to get one you too -- More information below! -- Quick build video. If you dont have a station like this already you should get one today! I will follow up this unit a bit more in future videos! Whats really good about this unit is that you can run it off your 14s battery bank!! (60VDC) Banggod links! Box: https://goo.gl/EtunVp More Arduino Compatible SCM & DIY Kits -- https://goo.gl/CSJk9x 15% off Home Hardware & Gadgets -- https://goo.gl/FmnPvQ (coupon included) DPS5020 Ebay: https://goo.gl/svtdt6 Amazon: http://amzn.to/2EPcjZp Powersupply to above Ebay: https://goo.gl/zrKn5Q Amazon: http://amzn.to/2EOg8xY Power supply case sponsored by Banggood https://goo.gl/EtunVp Other powersupply units: https://goo.gl/dQQZNc Big ass reflow and soldering station: https://goo.gl/XT6tu7 Smaller reflow and soldering station Ebay: https://goo.gl/bYkDmA Amazon: http://amzn.to/2F0o2ax Crimping tool https://goo.gl/Lw8oSV ------------------------------- Do you want to support my channel? Below links cost you nothing to use: Complete list of recommended stuff: http://diytechandrepairs.nu/complete-solar-best-buy-list/ Ebay: https://goo.gl/PwRR68 Amazon: https://goo.gl/VSU4YH Amazon store https://www.amazon.com/shop/influencer-6fceca1d Banggood https://goo.gl/fcCjJ5 Gearbest: https://goo.gl/tay4J6 Patreon and Paypal: https://www.patreon.com/DIYtech [email protected] / https://www.paypal.me/diytechandrepairs Become a Patreon? https://patreon.com/invite/bqxpyp Manage your youtube videos like I do? Use below https://www.tubebuddy.com/DiyTechandrepairs --------------------------------------- Links to my site and current solar layout: http://diytechandrepairs.nu/current-solar-layout/ https://www.facebook.com/diytechandrepairs/ http://www.diypowerwalls.com/t-Esperyd-Solar-and-powerwall-system Steemit if you want to read more! https://steemit.com/@diytechandrepair DIY powerwall forum: https://goo.gl/Hfr529 -------------------------------------------------------------- Music Disfigure - Blank [NCS Release] https://www.youtube.com/watch?v=p7ZsBPK656s Different Heaven - Nekozilla [NCS Release] https://www.youtube.com/watch?v=6FNHe3kf8_s Desmeon - Back From The Dead [NCS Release] https://www.youtube.com/watch?v=OFWT4yfPdjo
Views: 14217 DIY Tech & Repairs
we sold woldwide , my Email: [email protected] Buying link :http://www.aliexpress.com/item/KA3005P-Programmable-Precision-Adjustable-30V-5A-DC-Linear-Power-Supply-Digital-Regulated-Lab-Grade-with-USB/32231782267.html KORAD TECHNOLOGY CO., LTD launches the KA series digital control and programmable regulated DC power supplies with industrial-grade performance, which is complete digital control, encoder voltage and current adjustment and one-button recall. They can be set to overvoltage and overcurrent protection and there is smart temperature-controlled fan. Above all, the aborative circuit design and neat inside construction ensure the stability and reliability of the machine. Compact and portable Application: R & D QC Automatic Testing in the Production Line School Laboratory Repairing Main Features: Complete programmable 10 mV / 1 mA resolution Low noise and ripple CV / CC constant voltage and constant current modes Settable OCP and OVP, constant protection mode 5 sets of parameters can be stored and recalled Output switch control Power-off memory function Keyboard lock function to prevent operator errors Easy alternative to the traditional digital-display power supplie Model KA3005P Voltage/Electric currentRange 0-30V / 0-5A
Views: 2031 曾小聪
Did an unboxing of the EVGA G2 650W power supply made by Super Flower. Their 80+ GOLD rated efficiency and praised ripple suppression is top notch, which is the norm coming from Super Flower, one of the best power supply OEMs in the market today apart from FSP and Seasonic. This PSU boasts a long 7 years warranty and features a fully modular design to help keep unwanted cables out of your computer system. The 140mm fan keeps things cool at a lower noise level than most 120mm or 135mm fans while pushing the same amount of air at a lower fan speed. For more information regarding this power supply, visit Techpowerup on their review on this beast of a PSU. Link: https://www.techpowerup.com/reviews/EVGA/SuperNOVA_G2_650/
Views: 605 Azri Azhari
ENGLISH: In this short video i show on an oscilloscope a ripple signal witch is transmittet via the german 230V 50Hz Mains. Such signals would be used to remote control the street-lights, day or night rate, night storage heaters etc. You can see a 1350Hz signal wich is laying on the 50Hz mains frequency. These signals are send as slow impulse sequences wich are decoded by the ripple relay receivers. The scope was connected electrically isolated to the mains via a transformer. Do you want know more about "ripple control" then i recommend the youtube channel RODALCO2007. He had very interesting videos also about this theme. GERMAN: In diesem Kurzvideo zeige ich auf dem Oszilloskop, wie ein Rundsteuerungssignal aussieht, welches über das deutsche 230V Stromversorgungsnetz zur Steuerung von z.B. Straßenlaternen, Nachtspeicherheizungen, Mehrtarifzähler übertragen wird. Man kann sehr gut ein 1350Hz Signal erkennen, welche der 50Hz Netzfrequenz überlagert ist. Diese Signale werden als langsame Impulsfolgen gesendet, welche in den Empfangsgeräten (Rundsteuerungsempfängern) ausgewertet bzw. dekodiert werden müssen. Das Oszilloskop wurde über einen Transformator zur galvanischen Trennung an das 230V Netz angeschlossen. Möchtest Du mehr über Rundsteuerung erfahren, dann empfehle ich den Youtube Kanal RODALCO2007. Er hat sehr interessante Videos auch zu diesem Thema. (Dort mal nach "ripple control" oder "Zellweger"suchen).
Views: 1528 swebphone
A very basic AC Ripple % Test before and after replacing the Electrolytic multisection Capacitor. Thanks again for watching and subscribing to my channel. The playlist for this series: https://www.youtube.com/playlist?list=PLjLu4V-71S1LhAVrMA1LK97h9JgxYrxot
Views: 866 RestoreOldRadios
The new flagship memory recorder MR6000 from HIOKI delivers 200MS/s sampling, touchscreen operability, and advances functions to help you find the waveform you need quickly out of overwhelming amounts of data. Measure inverter and switching power supply signals with direct high voltage input. Learn more at https://www.hioki.com/en/information/detail/?id=407
Views: 956 Hioki E.E. Corporation
Using 100kHz to remove the impedance 1(2*pi*F*C), the impedance will become small, and then we can measure the true series resistor value. A bad E-capacitor have larger ESR and create large ripple rather than filtering noise. Normally, a big capacitor is larger than 3 ohm. Therefore, we can measure the capacitor is bad, damaged or in good condition by using this theory. Because our ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, as a result we can use it as in circuit test. Because this low testing voltage, it cannot turn on the semiconductor inside a circuit under testing. During repairing TV, LCD, Audio board, etc. we can in circuit testing the capacitor is good or not. Advantage of V2: 1) Change square wave to sine wave 100 KHz, reduce square wave's high frequency component, and affect the reading passing the test leads and capacitor. 2)Higher Resolution up to 0.001 ohm. 3)128X64 dot matrix LCD, with larger value display and information 4)Embedded 25Volt capacitor table at LCD, auto display the capacitor is good or bad reference to common 25Volt electrolytic capacitor. 5)New plastic case, curve design for hand carrying. New stand for 60 degree stand on desk. 6)Use 2X AA battery, more convenience and longer battery life than 9V battery. 7)Support external USB power, using standard micro-USB port. Specification: 1)Accuracy: Up to 1% (detail on above table) 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 (Not included) 6)External Power: 5V micro USB 7)Operating current0.02A 8)Battery Life time: 80 Hours Package 1x MESR-100 V2 2 x test clips Using true 100 KHz sine wave to measure the ESR value, which is equal to the testing method of capacitor manufacturer. - Dual terminal, for fast and easy inspect general capacitor or resistor, a printed ESR table for fast check. - Measuring range from 0.001 to 100.0R, support IN CIRCUIT Testing. - Auto-ranging capacitor ESR and Low Ohm Meter. - Wide Measurement Range
Views: 216 BlingOnIt Reviews