DIGITAL LOW-FREQUENCY PHASE-ANGLE METER

摘要

Using PHASE MEASUREMENT appliances, measuring the phase angle between the two harmonic wobbles. The inventive device comprises: two formers (1, 2), 1 RS-flip-flop (B), one source of reference voltage (4), two electronic key (5, 6), one integrator (7), one comparator (8 ), 1 count pulse generator (9), a 2-selector (10, 11). 2 counter (12, 13), one DAC (14), one inverting amplifier (15), one control unit (16). 2 yl.