Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site petrus.UUCP 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