Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!asylum!osc!jgk
From: jgk@osc.COM (Joe Keane)
Newsgroups: sci.electronics
Subject: Re: NEGATIVE VOLTAGE?
Summary: Positive regulators are more common.
Keywords: polarity
Message-ID: <4662@osc.COM>
Date: 12 Mar 91 22:00:21 GMT
References: <1991Mar8.140031.20095@uncecs.edu> <1991Mar8.182508.15573@zoo.toronto.edu>
Reply-To: jgk@osc.COM (Joe Keane)
Organization: Versant Object Technology, Menlo Park, CA
Lines: 9

In article <1991Mar8.182508.15573@zoo.toronto.edu> henry@zoo.toronto.edu
(Henry Spencer) writes:
>I'm not sure why -12 is such a problem.  The circuits for negative supplies
>are no more complex than those for positive supplies, and IC regulators are
>just as available.

Unfortunately, this last statement is not true.  For some reason, positive
regulators are more common.  You can probably find what you want in a negative
regulator, but you won't have as much of a choice.