Northstar S100 compatability

From: Allison J Parent <allisonp_at_world.std.com>
Date: Thu Mar 19 22:21:55 1998

<Well, the mains transformer is wired OK; it happily takes the 240V in and
<spits out something (?) like 8VAC, 16VAC and respectively. The 16VAC then
<goes through what I assume is a bridge rectifier, and out comes approx.
<+32VDC and -32VDC. The snag *is* that it's meant to be supplying 16, not
<32v! The 8v rail, fortunately, is fine.

Fix that! That 32v is way to high and will snuff the regulators used
for +/-12v. I would expact something closer to 22v DC. Also the caps
used would be stressed if subjected to that for an extended time. It
sounds like the power is wired wrong.

<Methinks that the previous owner may have been a little naughty with the
<wiring; but I'm not confidant enough with electronics to play with it
<too much. This is one machine I don't want to risk blowing up! :)

Sounds that way. Get help from someone on your side of the pond if your
in over your head as that's a fine machine. With 64k of ram and software
it's still pretty useful. At least mine still earns it's keep.

Allison
Received on Thu Mar 19 1998 - 22:21:55 GMT

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