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ARRANGEMENT TO MEASURE AND COMPENSATE FOR CRYSTAL ORIENTATION CHANGE

  • US 3,600,951 A
  • Filed: 03/12/1969
  • Issued: 08/24/1971
  • Est. Priority Date: 03/12/1969
  • Status: Expired due to Term
First Claim
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1. A method of obtaining a very stable output from crystal oscillators comprising the steps of:

  • supporting in a symmetrical arrangement approximately matched crystals which control two or more oscillators in a manner such that the natural frequency shifts in the crystals caused by changing the gravitational orientation are compensatory and combining the outputs of said two or more oscillators, whereby the sum of said combined outputs is substantially independent of the gravitational orientation of said crystals.

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