View single post by EVPDave
 Posted: Jan 28th, 2010 09:14 AM
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EVPDave

 

Joined: Mar 7th, 2007
Location: USA
Posts: 206
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This simple buzzer type circuit should generate plenty of harmonic noise in any nearby radio. I would use a variac to lower the line voltage. This would prolong the life of the relay.

Dave

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buzzer3.jpg