Hoefer PS 500 Power Supply

[Duncan Clark]

Historians believe that in newspost 
<1146273160.955865.39370 at g10g2000cwb.googlegroups.com> on Fri, 28 Apr 
2006, broderid <broderid at onid.orst.edu> penned the following literary 
masterpiece:
>Our Hoefer PS 500 electrophoresis power supply is drifting upward
>significantly after a short period of time.
>I have a schematic for the power supply.  I am looking for a users
>manual and troubleshooting guide.

Is this under load and I assume you are meaning voltage?

Are you sure you are not running a gel at constant current or constant 
power which will automatically mean the voltage changes during a run.

Duncan
-- 
I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.