Back to Basics II: Adjustable Current Regulator with the LM317
Back to Basics II: Adjustable Current Regulator with the LM317
LM317 datasheet: www.ti.com/lit/ds/symlink/lm31...
LM317 Voltage Regulator Video: • Back to Basics: LM317 ...
LM317 in my Amazon Store: amzn.to/2AYNNHx
If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ www.amazon.com/shop/learnelec....
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 appriciated.
Or....if you'd like to send a one-time donation you can use this link: paypal.me/learnelectronics
FAQ:
Me: Paul, 49 from USA
Education: United States Navy, University of California at San Diego B.S. E.E., University of Pittsburgh M.S. E.E.
Experience: United States Navy STS, Bayer Intnl Process Engineer, C.C.A.C AP of EE
Current: Retired
Health: BAD (Congestive Heart Failure)
Hobbies: Electronics, flying, amateur radio, music (classic rock)
Low cost, professional PCB's: www.pcbway.com
Пікірлер: 72
I've seen these circuits til I'm blue in the face. However, placing a fixed resistor in parallel with a variable resistor to limit current is really cool. I learned something new. Great video, sir!
Regulators arrived today (let’s hear it for Prime!) so I may have time to play with these two concepts over the weekend, thanks Paul... 👍🏻 🧐 🐍
Adding the cap in parallel stores unused potential and dissipates it back in to the circuit when it falls below a threshold, choosing the right value cap like a .01uF with the right time constant will fill in the noise gap nicely
Any chance you could do a video on how to regulate larger currents, like 10A at 40 Volts?
Lmao 2 am can't sleep sounds like my problem 🙃
Cool. Look at where the parallel resistor is drawn. Newbys might be confused by incorrect placement.
hello it is voltage regulator not current !? it means you can not have a 12v with 200ma of current
wait how the heck it didnt bypass the variableR was it because the resistance was lower?
oh ... how nice at 4.00 you found out that you have a left hand ... great
I like how you put your additional parralel resistor in your diagram.😄
When you teach basic concept use basic things, thats great quote sir
I generally use a LM317L with a 220ohm resistor between A and C and a LED for the load as an easy "no think" way of indicating "output/testpoint high" on the breadboard.
OK. I couldn't sleep either so I was up until after 3am. So I really can't think well now but I will think on it. Thanks for showing another side to the LM317!
Great application of the LM317!
Thanks Paul i feel a build is at hand great stuff.
I am using the LM317 to regulate voltage to my model train smoke heater to maintain nice smoke plumes during various speeds as fan puffs increase cooling air flow. Thanks for sharing. D
thanks so much for your videos, always a pleasure :)
Great video. Just what I wanted right now😊
hi paul, i learn a lot from your videos, thank you! how much amps did you set the load here? what should i do to increase the swing to a max current of about 3 to 5 amps? how would i configure this with a power transistor to achieve higher current limiting?
Excellent 👌