On Sun, 30 Nov 2003 14:43:48 -0000, "Frank Dinger"
wrote:

It is only a simple psu, but using a 24VAC transformer
[http://home.online.no/~la8ak/images/4ua3.gif)

Wonder what size capacitors I should use to keep ripple minimum above
+24V?
=====
As a rule of thumb not less than 2000 microFarad per ampere
Hence for a 20 Amperes supply a total of 40KmicroFarad or more.

Aren't we forgetting something, chaps? It's for Frank to tell us the
maximum level of ripple he's prepared to tolerate. You can't give a
meaningful answer without that, can you?
--

"I expect history will be kind to me, since I intend to write it."
- Winston Churchill