Testing Power Supplies! Re: Norsk Data Nord-10/S restoration

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Wed Nov 17 17:19:01 2004

> > Rmemebr that most computers run off 5V and maybe 12V. You don't need that
> > many dummy loads!. An assortment of car bulbs (and holders if you don't
> > want to solder wires driectly to the bulb caps) is a good start.
>
> That is only true about TTL and computers that used a Z80 or later designed
> chips.

DTL also uses +5V IIRC. And (equally IIRC) the 8080 used some subest of
+/-12V, +/-5V. 12V bulbs are common, 6V ones will do for the 5V rails.

Going back even further, I guess 15V rails were quite usual. Perhaps 3 6V
bulbs in series would do for those if you can't find 15V bulbs anywhere
or find suitable resistors.

-tony
Received on Wed Nov 17 2004 - 17:19:01 GMT