[time-nuts] time-nuts Frequency Divider

John Ackermann N8UR jra at febo.com
Sat Apr 4 11:16:27 UTC 2009

Ulrich Bangert said the following on 04/04/2009 06:13 AM:

>> As a curiosity, there are various variants of the original 4046 which 
>> has different sensitivity on the input side... one of them 
>> has several inverters in a row to get the needed gain where as the other
> variant 
>> does not. This difference made a huge difference in some applications.
> are you going to say with that it would be reasonable to test different
> brands for input sensivity? I have been believing that all brands have this
> inverter chain.

Brooks Shera used the 4046 as the input conditioning circuit in his 
GPSDO that was published quite a while ago.  I seem to recall that he 
noted only certain brands seemed to work well, but I don't recall the 


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