30 Apr
1997
30 Apr
'97
3:49 a.m.
On Wed, 30 Apr 1997, Alexios Chouchoulas wrote:
On Tue, 29 Apr 1997, Isaac Davis wrote:
I thought there was a way to put a bridge rectifier (or something REAL
close) on a DC power supply that would let you plug it into a DC load
and the polarity wouldn't matter.
That and a lab power supply with voltage and amp meters would pretty well
remove all possiblity of damage to board. (Well, most of the porbablity
anyway)
BC
That's a shocker for me. I think I need to
learn a little more about
electronics, and if you tear yours apart, I would love to have a copy of the
schematics. It might be a good learners project for me, and useful as well.
Mind you, sometimes you can hack something together without paying any
money. I have an MC-10 which I got sans PSU. I couldn't find anything like
it anywhere (8V AC, 1.5A). In the end I hacked an existing DC transformer by
bypassing its rectifier. One of the settings provided exactly the power
rating of the MC-10 (well, almost -- it gave around 0.9 to 1A). The MC-10
worked fine, albeit a few months after getting it (couldn't risk burning the
thingy).
I wouldn't recommend doing this if you don't know what could go wrong,
though. You may fry a perfectly good old computer by mistake. Believe me,
I've done it and I didn't like it *AT ALL*. Now I'm really careful of power
supplies and proper insulation, polarity and ratings for everything. It
pays.