On Sat, 11 Dec 2004 16:49:19 +0000 (GMT), Jim Lesurf
wrote:

I also tend to prefer bench supplies when developing or testing an amp, and
only connect to the working PSU when doing more protracted tests. Bench
supplies give more safety options, and can also be useful for checking
other effects, etc.

Apropos of the actual power supply. WIth valve voltages, during
development, I always had biggish resistors wired across the main
electrolytics to ensure that they discharged fairly quickly after
switchoff - about a couple of seconds was my target. These came out
for the final design, of course.

d

Pearce Consulting
http://www.pearce.uk.com