[Amps] PSU design question

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Sat, 07 Nov 2009 02:41:26 -0500, Roger <sub1 at rogerhalstead.com> wrote:

>Why? It's DC. Wouldn't one diode should suffice?  We used two of 
>opposite polarity in parallel with AC at work.

REPLY:

A long time ago I thought that too - that one diode would be sufficient. But
then someone posted a bizarre scenario involving a broken ground wire and some
other condition (I forget the details) where reverse current could flow during
an arc. Since then I always use two diodes. 

Cheap sleep-at-night insurance.  :-)

73, Bill W6WRT