08-15-2015, 12:11 PM
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VideoKarma Member
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Join Date: Sep 2009
Posts: 4,573
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Quote:
Originally Posted by old_coot88
In order to produce multiple bars, it'd hafta run at some multiple of the line frequency. Seems like that would require an active device of some kind. Tunnel diode maybe?  |
Perhaps a neon bulb??? 
This is a fun puzzle!
jr
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