[time-nuts] Setting Osc Frequencies

Bill Janssen billj at ieee.org
Sat Mar 3 19:22:58 EST 2007


Dr Bruce Griffiths wrote:
> Dr Bruce Griffiths wrote:
>   
>> Tom Van Baak wrote:
>>   
>>     
>>> Don,
>>>
>>> Yes, using an oscilloscope in this way is a time-honored
>>> trick to observe slow changes in relative phase over time.
>>>
>>>       
Stuff clipped
>> Tom
>>
>> One could always use an HP K34-5991A (or equivalent phase comparator) 
>> connected to a strip chart recorder.
>> Failing that an equivalent device should be easy enough to build and it 
>> could be connected to a DVM or other low resolution ADC which in turn is 
>> connected to a computer for data logging purposes.
>>
>> Bruce
>>
>> _______________________________________________
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>>
>>   
>>     
> Tom
>
> Additional info on K34-5991A
> Manual available at:
> http://www.to-way.com/k34599a.pdf
>
> Since the circuit uses 2 line receivers, a dual flip flop an exclusive 
> or gate and an opamp, designing/building an equivalent instrument should 
> be fairly simple.
>
> Bruce
>   
I built my own version of this scheme and it works OK but mine has some 
"issues"
So I would like to have at least three of these.to replace my one.

Anyone willing to take on the job of designing a circuit board?

I log my results with a A-D converter and my Basic program

Bill K7NOM




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