Lm338 input current

Thread Starter

powere003

Joined Nov 8, 2012
1
Hello all,

I have a dc source with about 30v at 0.2A. I want to bring the voltage down to about 20v and increase the current to about 5A. Can I do that with the LM338?

My understanding is that the current going into the lm338 must be greater than the desired output current. Is that true?

If so, how do I increase the 0.2A current source before hooking it to the lm338.

Regards.
 

bertus

Joined Apr 5, 2008
22,270
Hello,

You just hijacked an existing thread that belongs to someone else;
LM338 Power Supply Current Regulator

Now you have a thread of your own.

You can not use the 0.2 Amp power source to power a 5 Amp regulator.
You will need an other power source that is capable of at least 5 Amps.

Bertus
 
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