Path: utzoo!attcan!uunet!lll-winken!ames!ucsd!brian
From: brian@ucsd.EDU (Brian Kantor)
Newsgroups: sci.electronics
Subject: Looking for isolated DAC chip
Message-ID: <1378@ucsd.EDU>
Date: 13 Jan 89 15:34:15 GMT
Organization: The Avant-Garde of the Now, Ltd.
Lines: 15

I've got 7 or 8 bits of TTL on a latch output that specify a lamp 
brightness level, and I want to control a TRIAC or other simple 
light-dimmer circuit with it.  The idea is to have a microprocessor
control a lighting panel.

I've seen some somewhat complex circuits involving optoisolators and
time ratio controls, but I'm looking for a simple circuit (i.e., a
complex chip is just fine, but the amount of glue needed to use it has
to be small).  I'd like to control about 1 to 15 amps at 120 VAC per
instance.

Suggestions?  My usual reference books haven't been very helpful.

	Brian Kantor	UCSD Office of Academic Computing
			brian@ucsd.edu ucsd!brian BRIAN@UCSD