APPARATUS FOR PRODUCING A SIGNAL WHEN A SELECTED P

专利名称：APPARATUS FOR PRODUCING A SIGNAL

WHEN A SELECTED PHASE RELATIONSHIPEXISTS BETWEEN TWO ALTERNATINGCURRENT VOLTAGES OF DIFFERENTFREQUENCIES

发明人：TIBOR RUBNER,ANDRE WAVRE,JOHN H.

BEDNAREK

申请号：US3652933D申请日：19691223公开号：US3652933A公开日：19720328

摘要：A signal is produced when a selected phase relationship exists between twoalternating current voltages of different frequencies by converting the alternatingcurrent waveforms to square waves, combining the square waves to produce arectangular waveform, and utilizing the rectangular waveform to produce a triangularbeat frequency signal having a linear relationship between phase difference and time, anda level detector has the triangular beat frequency signal applied thereto and producesan output signal when the triangular beat frequency signal exceeds in amplitude aselected level in the level detector.

申请人：WESTINGHOUSE ELECTRIC CORP.

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