On 3/2/14 11:09 AM, Chris Albertson wrote:
Junk crystals are good thermometers. Ballpark is 1 ppm/degree-C
So does this mean I can epoxy a sandstone power resister to a junk
crystal and keep the frequency exactly perfect by varying the power in
the resister?
Yes.. but you have to hold temperature to 0.001 degree, which is
somewhat challenging<grin>
A lot of SAW devices have tempcos that look like a parabola that fits in
a box that is 100 degrees wide, and 100 ppm high.
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