[time-nuts] Allan Deviation -> continuing saga...

Tim Shoppa shoppa at trailing-edge.com
Mon Oct 30 06:58:46 EST 2006


Dr Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:
> The 100K+100pF in series with the comparator input must really help in 
> elevating the noise level.

Jeeze. These AD comparators are used by me in line receivers where
they are usefully terminated at 100 ohms! And here they are putting
100K in front!

If you have an improvement (or even better a whole family of
improvements) the best way to get them published in QEX is to send
them schematics, and the way to make the schematics most useful is
to send a concise little chart of noise numbers for the various
circuits. The editors have a well-fed disgust of tit-for-tat
letters/editorial comments and may not be able to distinguish
between tit-for-tat criticism and real criticism, but they
often publish improved circuits.

Tim.



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