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/diy/ - Do-It-Yourself

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Anonymous 07/02/14(Wed)21:03 UTC+1 No.661701 Report

So /diy, time to change my cheap bench PSU. I already have a lovely transformer (24v@3A) and the preregulating will be done with some good old 2N3055 in parallel and a basic ripple filtering. Now about the interesting part, i was planning in doing the voltage and current control with PIC, and the control circuits made with opamps and transistors/fets (no lt3080 or other linear regulators bs). The current control is pretty straightfoward, so i don't have doubts about that, but the voltage regulation is another thing.. I found to designs I like, maybe with modifications, Both are here, http://www.eevblog.com/forum/projects/general-purpose-power-supply-design-7488/, the first in page 3 and the second in page 15. I like more the first one, any suggestions? critics? why should i not do that? why are you all fags? etc.
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Anonymous 07/02/14(Wed)21:38 UTC+1 No.661707 Report

>>661701
I guess you already read Microchip application note for DC-DC converter (AN216).

Looks simple but to be honest, you'll need to get a scope to see load regulation, max ripple, etc.
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Anonymous 07/06/14(Sun)00:36 UTC+1 No.663115 Report

>>661701
bumping for interest, post some progress OP.

i want to do similar but as a high current supply, i already have a 2kW 12V source, any tips on adapting one of these circuits to handle this?
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