[time-nuts] Squaring Tbolt 10Mhz output

Greg Broburg semiflex at comcast.net
Thu Mar 24 02:00:42 UTC 2011


Feed it through a 10M0 Hz crystal filter (easy to make
out of one crystal) then put the output of the filter into
a fast comparator. It is commonly done in certain
types of DDS synthesizers. Is that clear enough or do
you need a picture?

Greg


On 3/23/2011 6:57 PM, James Fournier wrote:
> Hello All,
>
> I'm trying to square the 10Mhz output from a Thunderbolt GPSDO, and failing
> miserably. I'm still very new at this so please forgive my ignorance. I
> thought it was going to be easy. I have tried diodes, comparators,
> op-amps, Schmidt trigger buffers,regular buffers, inverters, and
> differential amplifier circuits. I must be missing something simple because
> i just can't shape the wave into a square wave. Has any one done this? Any
> hints or tips for a struggling newbie? Many thanks!
>





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