[Elecraft] OT: Wanted 60Hz vibrating reed freq meter
N2EY at aol.com
N2EY at aol.com
Mon Apr 28 19:39:43 EDT 2008
In a message dated 4/28/08 2:10:17 PM Eastern Daylight Time, w0eb at cox.net
writes:
> Looking for a vibrating reed type of 60Hz frequency meter for a generator
> monitor I'm trying to build for field day.
Sorry, I don't have one.
But I do know an alternative.
Way back in QST for March, 1971, there was an article about a line voltage
and frequency monitor. The frequency measuring section consists of a couple of
resistors, a pair of zener diodes, a 0.22 uf capacitor, a bridge rectifier, a
calibration pot and a 0-1 mA meter. I built one and it works very well.
73 de Jim, N2EY
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