Method and apparatus for frequency measurement and adjustment of

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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324 81, G01R 2307, G01R 2922

Patent

active

047331640

ABSTRACT:
Method and apparatus for measuring the characteristic frequencies of a monolithic crystal filter and for adjusting them to predetermined values, based on selectively transmitting two balanced decoupled signals through the filter to an output signal detector for exciting and measuring the characteristic frequencies.

REFERENCES:
patent: 3963982 (1976-06-01), Roberts
patent: 4093914 (1978-06-01), Peppiatt et al.
patent: 4447782 (1984-05-01), Rutkoski

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