[volt-nuts] Power Designs Precision Power Supplies

[Marvin E. Gozum]

Hi Mark, the manuals for these units are online, but the image 
reduction for the schematic makes it hard to read, but some sleuthing 
will tease out labels on the components.

https://docs.google.com/viewer?a=v&q=cache:EwpcBMGQ5TAJ:128.238.9.201/~kurt/manuals/manuals/Other/POWER%2520DESIGNS%25202020B,%25205020,%2520C500%2520Instruction.pdf+&hl=en&gl=us&pid=bl&srcid=ADGEESgOKHKiERW-JexT4B1lKdgXdxFrlR3FKBaAISArSRNrlmm-L65VRQh2WZMvUBY3QvNaKRhZXi3nvdJuMMzLNhgGF1Zjzdz0wmT83-bRw-oCoH3jyU819g4ik3Z5_13PKKNwF4RS&sig=AHIEtbT9w8oh_e9PK_kT7JD8rqPC1kPWRA&pli=1

The original source is from KO4BB manuals site but its not indexed on 
the html links, but it can be googled, above is a browse with dl 
links when it comes back online.

Yes, 3+ decades later, the units I have are working great, as-is 
without maintenance, it will need a little tweaking to align the 
analog meter and recal the dial, I can dial in 1ppm in a setting fairly easily.

Except for some unobtaniums, the unit was built to last and, has 
already proven its quality, QED.



At 09:46 PM 4/23/2012, Mark Sims wrote:

>I have 3 2020B's and a 5020 that I would greatly appreciate the manuals for.
>
>As far as why one would buy them instead of HP, etc...  because they 
>are oh, SOOOO sexy.  And frankly nobody really ever made anything 
>that worked better.   And you can occasionally snag a perfectly good 
>one for 20 bucks!  A dead one's worth that just for the pleasure of 
>clicking the clicky dials.  All of mine were still dead-nuts 
>accurate when they came in (and had not been calibrated since the 
>last millenium)



Sincerely,



Marv Gozum
Philadelphia, PA