Subj : Re: Apple II Forever!
To   : opus7
From : Spectre
Date : Thu Sep 23 2021 15:59:00

 op> the problem with the Amstrad I could never really solve. The Voltages come
 op> out just fine (and I tested them)), and the 63W were borderline for the
 op> Amstrad but should have done it. Better you check the Power supply before
 op> you attach it, just to be sure. I have a suspicion that is has to do how
 op> the Apple II power supply bridges the 0V, that seems different to the IBM
 op> world.

Ponder been a while, I don't check in here to often. Only just found this
buried in the past.  The A2 supply is really just a super early switchmode
supply. It doen't have to many foibles in the 0 crossings, but what you can
run foul of, is all the voltage regulation is done from the 5v rail. If
there's insufficient load on it, the rest will be all over the place. That
said PC supplies so long as they still provide all the right voltages are
easier to work with. I've had an ATX 1.0 supply powering Clone+ but I have to
sit it outside the case :/

If you come across this throw me a line, sysop@tlp.zapto.org...

Spec


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