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Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!bellcore!petrus!karn
From: karn@petrus.UUCP
Newsgroups: net.analog
Subject: Re: Big Capacitors and now power supplies
Message-ID: <229@petrus.UUCP>
Date: Tue, 11-Dec-84 03:14:26 EST
Article-I.D.: petrus.229
Posted: Tue Dec 11 03:14:26 1984
Date-Received: Fri, 14-Dec-84 13:29:16 EST
References: <1812@sun.uucp> <1215@hou4b.UUCP>
Organization: Bell Communications Research, Inc
Lines: 12

> 7805s are only rated at 1 amp.  Now I know you can pull about 1.5 amps
> through most of these suckers before they melt (have *you* ever seen
> the thermal overload protect *work*?), and that you can get 3 and 5 amp
> versions of essentially the same thing, but you are still current
> limited by the things.

I seem to recall a lamp flasher which used the current limiting capability
of these three-terminal regulators. You put a horrendously oversized lamp
on the output of the regulator, and you controlled the flashing rate by
varying the size (and thermal inertia) of the regulator's heatsink.

Phil