Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1978-05-08
1980-09-23
Blix, Trygve M.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
303 95, 303 97, 307233B, 328130, 364484, G01R 2310, B60T 802
Patent
active
042245680
ABSTRACT:
A frequency measuring device measures the number of full cycles of a periodically time varying signal which occurs in a fixed sampling period and calculates the fraction of a cycle of the signal occurring in the sampling period.
REFERENCES:
patent: 2992384 (1961-07-01), Malbrain
patent: 3524131 (1970-08-01), McWaid
patent: 3713026 (1973-01-01), Kubo
patent: 3829785 (1974-08-01), Schroder et al.
patent: 3922670 (1975-11-01), Shaw et al.
patent: 4107600 (1978-08-01), McMannis
Blix Trygve M.
Eisenzopf Reinhard J.
Wagner Electric Corporation
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