Current Limited LM2576 Power Supply
Октябрь 19, 2015
I build a LM2576-based switching power supply for my workbench. The version I build is fixed 5V with an adjustable currently limiter, but I describe how to make a fully adjustable one as well. Visit my blog at http://www.smbaker.com/
322 17
33,541 просмотров
EEVblog #221 - Lab Power Supply Design - Part 1
PART 2 is HERE: http://www.youtube.com/watch?v=6Otr1I0OR18
Dave shows you how to design a simple constant current and constant voltage lab power supply that can be either software (PIC/AVR et.al microcontroller) or traditional pot controlled.
Starting with the venerable LM317, and ending up with an LT3080 solution, and the some thought processes that go into it all.
Part 1 is the conceptual design of this Open Hardware design.
4091 80
Engineer It - How to do precision current limiting for a supercapacitor application
Learn how to limit the charging current of a supercapacitor. Texas Instruments (TI) applications engineer Amy Le walks you through the block diagram, provides sample calculations, and demonstrates how to precisely limit the output current of a switching regulator.
217 12
Step Down Converter Prototyp erklärt
Der bereits vorgestellte Step Down Converter Prototyp -Marke: Halbeigenbau (die Ansteuerung übernimmt ein gekaufter Schaltregler)- ist nun fertig. Die auf einem Steckbrett aufgebaute Schaltung funktioniert wunderbar und erreicht Effizienzen von über 70%. Gekaufte Schaltregler könnten zwar noch mehr rausholen, aber es geht nichts über einen Selbstgebauten.
Das Ansteuern der Schaltung übernimmt ein LM2576 T5: http://www.reichelt.de/LM-2576-T5-0/3/index.html?&ACTION=3&LA=446&ARTICLE=10425&artnr=LM 2576 T5,0&SEARCH=2576.
Funktionsweise von Spannungswandlern verständlich erklärt: http://rn-wissen.de/wiki/index.php/Spannungsregler
22 6
Battery Cell Balancing using Inverters - Energy Saving
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
How to Get PCB Cash Coupon: https://bit.ly/2GMCH9w
Balancing cells by dumping excess charge into resistors is energy inefficient. Here I present an alternative approach using oscillators, transformers and bridge rectifiers.
152 11
Arduino with built in FPGA: MKR Vidor 4000 Unboxing and initial setup
Arduino with built in FPGA: MKR Vidor 4000 Unboxing and initial setup
ARDUINO Vidor 4000 : https://amzn.to/2JX1lr1
Yes!! I now have merch: https://teespring.com/stores/learnelectronics-store?page=1 Electronics themed T-Shirts!
HEY YOU ABOUT TO POST SOMETHING STUPID:
Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: https://cle.clinic/2TdS2Ux
One of the symptoms is that is causes fluid retention, mostly in the hands, feet/ankles, and face.
It will kill me one day. I'm doing ok right now, but someday...
——————————————————————————————————————————————————————————
If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ amazon.com/shop/learnelectronics
Please check out www.patreon.com/learnelectronics and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. You help is appreciated.
——————————————————————————————————————————————————————————-
Or....if you'd like to send a one-time donation you can use this link: paypal.me/learnelectronics
———————————————————————————————————————————————————————————
Here is all the gear I currently use:
Oscilloscope: Micsig STO1104c https://amzn.to/2UPPZeg
Power Supply 1: TekPower TP3005N https://amzn.to/2TeQnxI
Power Supply 2: RUIDENG DP50V5A https://amzn.to/2sNicSe
Signal Generator: JS2800 https://ban.ggood.vip/d9vk
DMM1: Owon18B https://amzn.to/2SbIGLs
DMM2: Aneng 8008 https://amzn.to/2sNQncI
DMM3: Aneng 8009 https://amzn.to/2S5qeEp
DMM4: Uni-T UT801 https://amzn.to/2S89SuL
Soldering Station1: Zeny (Yihua)862D https://amzn.to/2S49z4e
Soldering Station2: KSGR T12 https://amzn.to/2Wk7Dn9
Light Meter Smart Sensor AS803 https://amzn.to/2B2gyRg
128 2
Fake LM2596HV Voltage Regulator Buck Converter Modules bought on eBay
There's a really useful variant of the LM2596 voltage regulator called the LM2596HV which can handle 60 volts on its input. But be careful — some that I bought recently turned out to be fake. At about 50v, the regulator became unstable and died which could very easily destroy whatever you have connected to the output.
1510 57
Why use Current Limiting Resistors | AddOhms #8
LEDs add magic to every electronics project.
Support on Patreon: http://patreon.com/baldengineer
Often not understand is what else you need to make that LED work correctly. Learn what current limiting resistors do for LEDs and watch what happens when you don't use one.
For this video we go the lab and run so much current through a LED, it destroys itself!
#LEDs #Electronics #Resistors
1844 30
HACKED!: ATX Power Supply with Variable Output Voltage?
Support me for more videos: https://www.patreon.com/GreatScott
DIY Lab Bench Power Supply video: https://youtu.be/QoGnOoTICGY
Previous video: https://youtu.be/x2MEJfY45UY
Facebook: https://www.facebook.com/greatscottlab
Twitter: https://twitter.com/GreatScottLab
You can get beginner lab bench power supplies here:
Amazon.com: http://amzn.to/2tWd28S
Amazon.de: http://amzn.to/2uXROEk
Ebay (USA): http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=282534773203&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
Ebay (Germany): http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=272707845563&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
In this episode of HACKED! we will have a closer look at the circuit of an ATX PC power supply aka a switched mode power supply (SMPS) and find out whether it is possible to modify so that it outputs a variable voltage.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)
You want to support my videos?
You can browse and buy tools&materials from my Amazon Store. This way I get a small commission:
Amazon.de: http://astore.amazon.de/great043-21
Amazon.com:http://astore.amazon.com/gre09a-20
Amazon.co.uk: http://astore.amazon.co.uk/gre0b-21
Or you feel super generous and want to use this Amazon link as your Amazon home page. And do not worry, your purchases are all anonym and the prices are all the same:
Amazon.de:http://www.amazon.de/?_encoding=UTF8&camp=1638&creative=19454&linkCode=ur2&site-redirect=de&tag=great043-21&linkId=ORZEQZEOVJAFURCZ
Amazon.com:http://www.amazon.com/?_encoding=UTF8&camp=1789&creative=390957&linkCode=ur2&tag=gre09a-20&linkId=I5NDCEAVCD2OWM4S
10535 479
Build a current limiter for safe testing
Every test bench needs this simple to make current limiter.
537 11
Discrete Transistor Constant Current Source Circuit
Discrete Transistor Constant Current Source Circuit
475 29
