DEC wiring colors and the PDP-8/e PSU

From: Ethan Dicks <erd_6502_at_yahoo.com>
Date: Wed Oct 23 08:56:01 2002

--- David Gesswein <djg_at_drs-esg.com> wrote:
> > If anyone happens to have their PSU dismantled
> > enough to see the back, I need to know which half of the breaker,
> > white-lead or black-lead, attaches to the lone white wire, and which
> > one attaches to the red wire (with a companion wire).
> >
> Did you look at... http://www.pdp8.net/pdp8em/pics/h724inp.shtml?large

Nope. Didn't think to look on your site for something as specific as
an internal PSU shot.

Looks like exactly what I needed. Thanks! From what I can see in your
picture, white does go with white. The only "tricky" part is that in
my PSU, the wire that goes on the hot terminal with the red is cloth
covered and white (the other white wire is plastic covered). It goes
to the transformer in the top right of your picture and half-way there,
it's painted black!

Armed with this, it appears that my worries were unfounded - I did
reassemble my breaker correctly. Now to replace/augment the rivets.

Looks like your mains leads are removable from the breaker. Mine are
not.

Thanks for the link and the confirmation. Now to get back to chip-level
CPU trouble-shooting before testing new OMNIBUS aquisitions (RK8E, MM8E
and KL8E)

-ethan


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Received on Wed Oct 23 2002 - 08:56:01 BST

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