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Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!homxb!hrs
From: hrs@homxb.UUCP (H.SILBIGER)
Newsgroups: net.audio
Subject: Re: ringing in my ears
Message-ID: <839@homxb.UUCP>
Date: Wed, 25-Sep-85 14:37:33 EDT
Article-I.D.: homxb.839
Posted: Wed Sep 25 14:37:33 1985
Date-Received: Fri, 27-Sep-85 03:47:32 EDT
References: <481@ihlpm.UUCP>, <5700094@uiucdcsb>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 12


Re: dimmer noise.

Dimmers use scr's or triacs which convert the ac to pulses.
While not changing frequency, the pulses are clipped
and thus geth high frequency components.  These drive
the lightbulb filaments to generate the sound.
This is lower in frequency than the TV flyback, and
also will not damage your hearing.

Herman Silbiger, CGE ihnp4!homxb!hrs


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