Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1986-04-03
1988-03-22
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
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
Harvey Jack B.
Strecker Gerard R.
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