[sdiy] Re: stupid PSU!!!

[mike ruberto]

So far so good. I have inserted this circuit as the regulator core and it works.
http://i108.photobucket.com/albums/n13/somnium7/gear/Lo_Noise_Regulator.jpg

Reduction of power supply noise is significant too.

I am trying to find a way to load test this PSU at 4 amps now. Any advice?

Mike

On Feb 17, 2008 11:20 AM, mike ruberto <somnium7 at gmail.com> wrote:
> Yeah, I'm getting pretty pissed off with this PSU now. Last night I
> had to just put it down because I got so frustrated - I went out and
> saw a local punk rock band to get the frustration out of me.
>
> It's built in such a way that getting any direct measurements while
> it's running are nearly impossible (space constrictions). If I can't
> measure stuff I can't fix it.
> Sooooooo, how about if I don't fix it? Yes I can go through and
> replace the fixed regulators and zener diodes and pray it will work
> properly OR I can scrap the entire pre-regulator circuit and graft in
> something based around adjustable regulators which have better specs
> than old 7815s.
>
> Here's that schemo again.
> http://i108.photobucket.com/albums/n13/somnium7/gear/RX7PSU.jpg
>
> Does anybody see any reason my idea wouldn't work?
> M301, M302, D302, D305 and supporting passive stuff would all go bye
> bye. The transplant would be the basic LM317 circuit from the app
> notes.
> I'm thinking it would be an improvement. Am I wrong?
>
> Mike
>