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From: rees@apollo.uucp (Jim Rees)
Newsgroups: net.analog
Subject: Can't get the LM383 to work
Message-ID: <2b6f01a2.1de6@apollo.uucp>
Date: Sun, 19-Jan-86 16:59:07 EST
Article-I.D.: apollo.2b6f01a2.1de6
Posted: Sun Jan 19 16:59:07 1986
Date-Received: Tue, 21-Jan-86 08:16:36 EST
Organization: Apollo Computer, Chelmsford, Mass.
Lines: 14

I recently needed about 5 watts of audio in a small space, so I went down
to the local rat shack and bought a LM383.  It is supposed to put out
8 watts or so into a 4 ohm load.

I wired it up just like the little diagram on the back, but all it does
is oscillate.  I played with the negative feedback a bit and even tried
a new chip.  I re-did the layout to give more separation between input
and output, and put in bigger bypass capacitors.  Nothing helped.  I
looked up the chip in a National data book and it gives the same circuit
as the one I got off the back of the rat shack package.

Does this chip work or not?  Has anyone tried it?  Is there some easier
way to get 5 watts of audio?  Distortion up to about 1% is not a problem,
and I have a split supply plus/minus 8 volts.