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Re: [RFI] Rectified 120Hz RFI?

To: RFI List <rfi@contesting.com>
Subject: Re: [RFI] Rectified 120Hz RFI?
From: Andy <ingraham.ma.ultranet@rcn.com>
Date: Wed, 4 Aug 2010 13:45:48 -0400
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Just thinking, there are many possibilities for what might cause it to
be 120 Hz instead of 60 Hz.

One being something gone wrong in a full wave rectifier.

Jim's suggestion of arcing on both excursions seems likely too.

I suppose it might also have something to do with the zero crossings.
Things like triacs tend to generate RFI because they switch on and off
every half cycle, 120 times a second.

Andy
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