[sdiy] Re: Power Supply PCB

mike ruberto somnium7 at gmail.com
Tue Mar 4 22:11:05 CET 2008

Here is a screen-grab of the design so far. Still kinda ugly...



On Tue, Mar 4, 2008 at 3:08 PM, mike ruberto <somnium7 at gmail.com> wrote:
> From my recent experience with the PSU of Doom I have designed a new
>  PSU unit which is the functional equivalent of that one with my added
>  upgrades. I am designing the PCB now and it's almost finished.
>  This unit will be capable of any split-rail voltage via programming
>  with zener diodes. Output voltage can be calculated as Vz + 1.25 + 0.6
>  and I included options to use extra diodes or LEDs to help getting the
>  target voltage easier.
>  The PSU can be built with a pass transistor stage for a maximum
>  current up to 4 amps. Or the 3 pin regulator can be used on it's own
>  for a maximum of 1.5A.
>  I attempted to incorporate all the "quiet running" practices I
>  researched online including separate ground paths for the regulator
>  adjustment network.
>  I am going to run PCBs of this for myself. If there is any interest I
>  can assemble a group-buy on these PCBs.
>  This time I will play it smart though and get a test run of PCBs made
>  before the main order.
>  As before, let me know off list if you are interested. I'll try to
>  post some technical details later on.
>  Mike

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