[Lowfer] TAG and Bill
Eric Smith
[email protected]
Sun, 9 Feb 2003 15:54:07 -0600 (CST)
Hmm. How simple! Thank you.
It disappoints me, though, that I can easily do that, once told, but could
not have thought of it on my own.
That's how amateur an amateur I am. :(
Thank you!
Eric
On Sun, 9 Feb 2003, John Andrews wrote:
> Eric:
>
> > Rumor has it you guys might be able to point me to a circuit that would
> > toggle an output on the hour and half-hour. I'd like to use the toggle to
> > switch one of my beacons (not LF) between two modes.
>
> I'd take a crystal oscillator and divide it down until I had a square wave
> with a period of 60 minutes. That would be 30 mins on and 30 mins off. I did
> that ages ago back in the TTL days to trigger a time tone for a radio
> station. The last division step needs to be a divide-by-two to get the
> square wave.
>
> John Andrews
>
>
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