Constant Current Regulator using LM317 | CCR | LM317 as a current regulator

[@mugambismonkey]

Thank you! I'm going to use an LM317 to build an alkaline battery refresher. Your explanations are very helpful!

[@FoolishEngineer]

Thank you so much for watching!! Please don't forget to subscribe to our channel

[@gabrielmassa]

Great video. Explained a lot. Normally they don't explain how to calculate the resistor. And why the values /how it works

[@Nikolas-vk1ks]

Hi, awesome video! I am wondering how did you manage to simulate the LM317 in LTSpice? I cannot find the component in the inventory and have difficulty to get an imported version to work...

[@juanriofrio6872]

Calculating the resistor value you pointed out the values of the voltage in (8v) and the voltage value of the led (2.2v). But in the calculation both are irrelevant. How do you know (or better said, how you calculate the voltage output of the lm317 for a led) Ex: 12v in 6.5v for the led at 0.4 mA. Could you elaborate in how to get the 6.5v from the lm317 and the resistor value in order to output 0.4mA? Thanks for your attention.

[@romanmorales3325]

Nailed it. Very good❤ Perfect explanation!!

[@sanjayparelkar3912]

Hi, Instead of the LED shown, I want to replace it with a wire of 0.3 ohms. The current flowing through the resistor is 50mA. Will it create a voltage drop across the wire of 15mV?

[@attilarivera]

I have a 12-volt power source with a current of 6 amperes. With this circuit, can I regulate the current of my power supply? I am thinking about a range betwin 20mA to 5A . 😺

[@zainaabdin]

Great....but what the max. current could this IC provide....what resistor?

[@yashkhandelwal6132]

What is the minimum input voltage will it work on?

[@elektronikhobim6903]

My Friend simulation and explanation wonderfull.thanks

[@FoolishEngineer]

Thank you so much! Please show support to my video with Super thanks.

[@putriamalia422]

I need 2V and 300ma from 5V input. How many ohm resistor can i use ?

[@dilanpriyankara6026]

Can I use this with a car battery

[@ruwanpremashantha428]

voltage auto adjustable Happens?

[@aliamirparast9641]

Hi, Thank you for the video How to make a constant power regulator?

[@breakfastbuddy5]

max voltage in , current will be 1-2 Ma ?

[@bradparker6156]

Hi, Good presentation. Two questions I hope you may be able to answer: 1. What is the maximum voltage out of such a circuit under light to no-load conditions. i.e. is it Vin, Vin-1.25 or Vin-1.25-Some additional voltage drop? If the last is true, what would such an “additional drop” be? (You may figure correctly that the question relates to use of same circuit for current limiting as opposed to a constant current source) 2. Did you create your own LM317 model for LTSPICE?

[@FoolishEngineer]

1. 1.25V drop is of LM317 itself 2. you can find its spice model on onsemi, TI or STM's website

[@Creativity_DIY]

Thank you 🙏 How to calculate a Capasitor value on this project⁉️

[@sabri.73]

Hi. I want to use mic29302 to charge a 12v-4.5ah lead acid battery but I don't know how to calculate the resistor value. can you help me?

[@ayushgemini]

LM317 is available for max 1.5A. But I require 16A constant o/p current. How to manage in that case?

[@FoolishEngineer]

You can use Dc to Dc converter based current regulator

[@nicklasdincer6720]

Nicely explained

[@FoolishEngineer]

Thank you so much 🙂

[@weirdo7957]

can i use this circuit for 0-50mA current injector, by using potensiometer

[@FoolishEngineer]

yes

[@grishyim4470]

I want to design circuit for convert 12Vdc to 2Vdc 50A with adjustable current using Potentiometer. This circuit continues running for 1-4hour in each day. But I haven't knowledge of electronic circuit. Can you guide me how to design circuit, please. I try to learn many circuit design on youtube for a few week, but that can not bring to apply to my requirement. All circuit I learn, It not support height current with low voltage. I can not see the advantage + disadvantage of using MOSFET VS LM317 VS TL494cCN

[@shivakumart2106]

Very good...explanation...explain CC/CV power supply working...in future video..

[@FoolishEngineer]

Sure I will. Thank you so much, Glad you liked it!!

[@gevideos2702]

hi there. i want to limit and vary the current of a 24V/1A power adapter between 2mA and 12mA, using a LM317, 1k ohm pot and a 1k ohm resistor. would that work or is it better I get a 2k ohm pot?

[@FoolishEngineer]

Hi, did you do the calculations as mentioned in the video?

[@jasona716]

Nice video, thanks!

[@FoolishEngineer]

Thank you so much for watching!! Please don't forget to subscribe to our channel

[@syedjalaluddin3398]

Hi, I have an 24V, 2.71Amp power adapater but I want to Reduce its Voltage and current as 21V and 1Amp. Please help me design a circuit using LM317. Thanks in advance.

[@breakfastbuddy5]

that should be 1,25 ohm

[@electroquests]

Awesome video!

[@FoolishEngineer]

Thank s Bro!!

[@vigneshraj6380]

How to calculate the C1 value for your circuit?

[@FoolishEngineer]

It is a filter capacitor. You can use any value depending upon your input ripple

[@kabandajamir9844]

So nice

[@FoolishEngineer]

Thank you so much for watching!! Please don't forget to subscribe to our channel

[@PandorasBox2]

all these Constant Current Regulator are good but most of them are low AMP circuits what about high amps like 12v 30Amp?

[@FoolishEngineer]

You can use PWM based current regulator

[@PandorasBox2]

@@FoolishEngineer Thank you i will check it out

[@gautampuri2008]

Cool video !

[@FoolishEngineer]

Thank you so much Sir!

[@sudhakarkulkarni1730]

Upto how much current We can use this

[@FoolishEngineer]

Instead of current our logic should be power dissipation. We should dissipate more than 300-350mW power through the LM317. So according to calculations, if you have more number loads you can use this for higher current and if you have less number of loads you should limit up to lower currents.

[@electroquests]

As much as LM317 is capable of, but the problem would be derating as temperature would increase. So we need to consider that as well.

[@mobileguruadvancetech]

Hindi me video banayenge to or bhi jada subscriber gain honge

[@FoolishEngineer]

Okay!!

[@meryemkl6086]

what a bad english