DEVICE FOR MEASURING ACTIVE AND REACTIVE CURRENT COMPONENTS Russian patent published in 1994 - IPC

FIELD: electric measurements. SUBSTANCE: device for measuring active and reactive current components has primary current transducer 1, primary voltage transducer 2, threshold element, first and second multiplying units 4, 6, sinusoidal reference signal shaper 5, cosinusoidal reference signal shaper, frequency multiplier 8 by 4, first and second controllable transfer ratio amplifiers 9, 10, trigger 11 with setting to a negative front, first and second integrators 12, 13 with reset, recording pulse shaper 14, first and second sample-and-hold units, reset pulse shaper 17. EFFECT: enhanced accuracy. 2 dwg