[time-nuts] Count up/down DAC circuit

Steve Rooke sar10538 at gmail.com
Tue Dec 30 07:29:24 UTC 2008


2008/12/30 Bruce Griffiths <bruce.griffiths at xtra.co.nz>:
> Steve Rooke wrote:
>> As part of the current idea I have with the hockey-pucks, I'm thinking
>> about feeding the D1 and U1 phase difference pulses out of an MC4044
>> out to some circuit that could clock up and down an analog output
>> which would ultimately go to the EFC of a ocxo, IE D1 pulses when the
>> phase of one input signal is advanced and visa versa for the U1 pin.
>> Anyone seen a circuit like that please?
>>
>> Thanks & 73, Steve
>>
> Steve
>
> It could be done using a  capacitive charge dispenser based circuit
> feeding an analog integrator.

Thanks Bruce, this is an interesting idea.

73, Steve
-- 
Steve Rooke - ZL3TUV & G8KVD & JAKDTTNW
Omnium finis imminet




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