[time-nuts] Digital Clock kit - no Integrated circuits!

Raj vu2zap at gmail.com
Sat Jan 9 11:28:35 UTC 2010


Poul,

You can get 60Hz from this xtal circuit

http://www.wiparat.com/60hz-clock-pulse-generator-by-ic-mm5369/

I don't know if the chip is still available, I remember building a few of them some 3 decades ago. My dad was impressed by the digital clock but kept commenting that his 25 year old Omega watch was more accurate.

Cheers
Raj @ 50 +- 2 Hz mains


>>I have just the divide by 60 down to 1Hz done.  It works now that I  
>>found that one diode I put in backwards.
>
>Is there any sign of a 50Hz option ?
>
>-- 
>Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
>phk at FreeBSD.ORG         | TCP/IP since RFC 956
>FreeBSD committer       | BSD since 4.3-tahoe    
>Never attribute to malice what can adequately be explained by incompetence.




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