PHASE-FREQUENCY RELAY Russian patent published in 2003 - IPC

Abstract RU 2213387 C1

FIELD: electrical engineering. SUBSTANCE: proposed relay designed to check generator voltage for deviation of its phase and frequency from those of supply mains voltage has five comparators, two pulse leading-edge shapers, two pulse trailing edge shapers, five OR gates, two RS flip-flops, three AND gates, three counters, three averaging filters, subtraction unit, clock generator, monostable multivibrator, and three final elements. EFFECT: enlarged functional capabilities. 3 cl, 2 dwg

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RU 2 213 387 C1

Authors

Shaposhnikov A.N.

Dates

2003-09-27—Published

2002-04-02—Filed