Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1982-12-13
1984-12-04
Schreyer, Stafford D.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 57SS, H04B 346
Patent
active
044866275
ABSTRACT:
An arrangement for monitoring the admittance of a line during a frequency sweep is disclosed which upon detection of the characteristic admittance level determines the loaded or unloaded status of a transmission line. Output logic associated with detection circuits provides a digital indication of the status detected.
REFERENCES:
patent: 4087656 (1978-02-01), Blum et al.
patent: 4307267 (1981-12-01), Peoples
Beeman Robert H.
Chmura Stanley J.
Doktycz Charles A.
GTE Automatic Electric Inc.
Schreyer Stafford D.
Xiarhos Peter
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