[time-nuts] Line Frequency

Bill Dailey docdailey at gmail.com
Sun Feb 9 15:25:16 UTC 2014


The PicPET is what I use.  Input is from a 5v ac transformer.  Seems simple to me. I bought a handful of these.  Love em.

http://www.leapsecond.com/pic/picpet.htm

Doc

Sent from mobile

> On Feb 9, 2014, at 7:53 AM, "M. Simon" <msimon6808 at yahoo.com> wrote:
> 
> This probably came up during the recent discussion of Line Frequency Monitoring but I may have missed it. 
> 
> 
> Does any one have a circuit (tested - operational) for monitoring line frequency? I'd like something that checks zero crossing so that it is relatively insensitive to line voltage variations. 
> 
> 
> Simon
> 
>  
> Engineering is the art of making what you want from what you can get at a profit.
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