[time-nuts] Division Circuit

[Said Jackson]

The premise of higher than "normal" click speed is false in the article too because the complex NOR gate is slow with that many inputs, and its tpd needs to be added to the Tsu and Tco of the flip flop chains, as well as the pcb propagation delays through the worst case trace..

It would have been faster to simply use a single reset RC delay to reset all FF asynchronously while only setting one FF at the same time during power-on. That would remove the Nor gate delay from the max speed calculation..

Sent From iPhone

> On Nov 14, 2014, at 12:13, "Don Latham" <djl at montana.com> wrote:
> 
> Thanks. You reminded me of the time when <design ideas> really had content. No
> more, I'm afraid...
> Don
> 
> Azelio Boriani
>> No need to digitize, the article is available here:
>> <http://www.edn.com/design/test-and-measurement/4347165/Circuit-divides-frequency-by-N-1>
>> or here (in .PDF):
>> ftp://ztchs.p.lodz.pl/PRP/PRP_2006_2007/71102di.pdf
>> 
>> On Fri, Nov 14, 2014 at 8:02 AM, Perry Sandeen via time-nuts
>> <time-nuts at febo.com> wrote:
>>> List,
>>> 
>>> 
>>> 
>>> I’ve digitized and edited an article titled* Circuit DividesFrequency by N+1
>>> by Bert Erickson, Fayetteville, NY from EDN 7/11/2002*.
>>> 
>>> 
>>> 
>>> Essentially, this circuit is expandable and allows for adivision by any
>>> number plus one.
>>> 
>>> 
>>> 
>>> Anyone who wants a PDF copy please send me an original emailoff list.
>>> 
>>> 
>>> 
>>> Regards,
>>> 
>>> 
>>> 
>>> Perrier
>>> 
>>> 
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
>>> To unsubscribe, go to
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
> 
> 
> -- 
> "The power of accurate observation is commonly called cynicism by those who
> have not got it."
> -George Bernard Shaw
> 
> Dr. Don Latham AJ7LL
> Six Mile Systems LLC
> 17850 Six Mile Road
> Huson, MT, 59846
> mail:  POBox 404
> Frenchtown MT 59834-0404
> VOX 406-626-4304
> Skype: buffler2
> www.lightningforensics.com
> www.sixmilesystems.com
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.