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Re: [Amps] Solid state relays..again

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Subject: Re: [Amps] Solid state relays..again
From: "John K Gotwals" <john@gotwals.com>
Date: Tue, 11 Feb 2014 14:34:33 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Sounds like my old 50A Astron. Big transformer and rectifiers. Pass
transistors for a regulator.  Once in a while that thing turns on with a
WHummpppp and a low frequency ringing that just trails off.

My guess is the noise has to do with the hysteresis loop of the transformer core and where on the loop the power supply was at turn-off and the following turn-on. John, N9JG (john@gotwals.com)
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