Lm338 constant current source.

190

04:20:12

Lm338 regulator used as a constant current source.
5 amp or less output.

published 2 years ago

lensrulz

2 years ago

Hello my friend, how are you?

yra

2 years ago

I'm great how are you doing 😊

lensrulz

2 years ago

I'm doing very well, it's good to see you publishing circuits regularly, stay well my friend.

yra

2 years ago

Glad to hear that, you do the same.

592azy2circuitdude

2 years ago

I may be mistaken, but I don't think this is a constant current source. I changed the power and voltage of the light load, and the current fluctuates a lot. Perhaps these circuits can help... https://everycircuit.com/circuit/4902539157569536 https://everycircuit.com/circuit/5424946364547072 thanks!

yra

2 years ago

I like your design on both. A variable resistor (pot) is not in either design. Mine is a approximate adjustable fixed current supply. Apples and carrots. This app is great for showing a design even if it is not exact in operation to the real world part's. LM78XX series regulator & Lm317 are all fixed current device up to 1 amp typically even if the input voltage varies. LM338 is a simple device as is a LM78XX series or LM317. Thanks for your interest. Put a pot in your design and Link me a copy so I can see what your saying.

yra

2 years ago

LM338 will push up to a 5 amp load. The load in this design is 5 watt to approximately show a power handling device. In one of your design with a pot, do you think this part will handle 1-5 amps required

yra

2 years ago

https://everycircuit.com/circuit/4935576079564800

yra

2 years ago

Op amp use for this design, Inspired by 592azy2circuitdude.

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