Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-05-07
1976-11-02
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 54, G01R 3102, G01R 3106
Patent
active
039900029
ABSTRACT:
A plurality of capacitors are successively connected across a coil while a train of driving pulses is applied thereto to cause the coil to ring after each driving pulse, and the number of cycles which occur in the ringing signal between two voltage levels thereof are counted to indicate if the coil is defective.
REFERENCES:
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patent: 2990514 (1961-06-01), Johnson
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patent: 3287635 (1966-11-01), Mole
patent: 3354387 (1967-11-01), Whaley et al.
patent: 3508143 (1970-04-01), Kuroda
patent: 3731185 (1973-05-01), Pittman
patent: 3887867 (1975-06-01), Safer et al.
Patnaude Edmond T.
Sencore Inc.
Strecker Gerard R.
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