[time-nuts] Mechanical 1PPS Oscillator Disciplining
David J Taylor
david-taylor at blueyonder.co.uk
Sat Jan 10 12:24:10 EST 2015
Hi David yes I think I have seen similar but not as low as that. If you
compare the suspension points the different vibrational mode should
obvious.....the suspension point is at a node. I think some of these are
quite difficult to excite, I have not seen any suggested circuits but I have
not looked too hard.
I uploaded a couple of pictures taken with the 'phone.
The first photo shows the size and mounting points of the crystal. The
crystal itself appears to be a two-layer structure. The second photo shows
a detail of one of the mounting points. The gold plating appears to have
been scraped away at the edge, and some sort of solder join made at the
edge. I might be able to do a better image with a different camera, but I
Hope that is of some interest.
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Email: david-taylor at blueyonder.co.uk
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