Is there a simple way to make a computer power supply variable and maintain high current? I keep seeing designs that use LM317T's, but they're limited to 1.5 A or less. I'd like to be able to retain as much of the current as possible but keep it simple. Thoughts?
Thanks in advance, Jake
On a sunny day (Sat, 10 Oct 2009 11:35:13 -0400) it happened "Jake Omega" wrote in :
I have an old AT power supply that simply has a trimpot for the voltage. that one pot sets everything, +5V, +3.3V, -12V, +12V.
So you would have to look at the control circuit and find out if you can perhaps do something with the voltage divider in the sense circuit, or the reference voltage. Those maybe integrated and not easy to change.
Or, add my Power PIC circuit to the 12V output, control from 0-24 V output, couple of amps at least:
Hi Jan,
Thanks. This is a Dell HP-P2507F3P and/or Dell 1E115. Unfortunately, I can't find a schematic of this on the web, so perhaps you or someone else might have some suggestions. Anyway, there is a pot inside but without knowing what it's for, I wouldn't want to start turning it.
Jake
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