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From: jgk@osc.COM (Joe Keane)
Newsgroups: sci.electronics
Subject: Re: How to reduce noise from light dimmers?
Summary: Filter it.
Keywords: dimmer, RF
Message-ID: <4000@osc.COM>
Date: 13 Nov 90 06:49:29 GMT
References: <1458@eastman.UUCP> <35639@cup.portal.com> <1990Nov6.133221.7556@athena.mit.edu> <3987@osc.COM>
Reply-To: jgk@osc.COM (Joe Keane)
Organization: Versant Object Technology, Menlo Park, CA
Lines: 8

In article <3987@osc.COM> i write:
>The problem is that they use a triac to cut off the current in the middle of
>a cycle.  As it is the current shuts off very quickly, generating all sorts
>of RF noise.

Sorry folks, i was thinking of something else.  As we all know, a triac turns
_on_ in the middle of a cycle.  So the right way to filter the output is with
a series choke.