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From: crisp@uncecs.edu (Russ Crisp)
Newsgroups: sci.electronics
Subject: NEGATIVE VOLTAGE?
Message-ID: <1991Mar8.140031.20095@uncecs.edu>
Date: 8 Mar 91 14:00:31 GMT
Organization: UNC Educational Computing Service
Lines: 14


Hello.

I'm in the midst of a construction project that, when complete, will
require a -12 volt power supply, a +5 volt, and a +12 volt supply.
I can handle the +5, and the +12, but the -12 is vexing me.  Can
I use another independent 12 volt supply, and reverse the leads, or
would this be a fire hazzard?  Whats the scoop on negative voltage
power supplies anyway?

Thanks for the advice.

Russ Crisp
Western Carolina University