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Old March 16, 2017, 11:00 AM   #177
Join Date: March 4, 2005
Location: Ohio
Posts: 17,680
I'm always surprised, given the need to supply power to these simple oscillators abruptly enough to ring the tank circuit, that folks still use mechanical relays for it. Cheap high current P-channel MOSFETs can be had to do the job and electronic timers with high speed TTL compatible outputs are a dime a dozen. The schematic topography would be something like:

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File Type: gif Schematic Switch S 2017-03-16_11-38-32.gif (11.6 KB, 568 views)
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