PHASE SHIFTING DEVICE Russian patent published in 1999 - IPC

FIELD: measurement technology; precision instruments and reactive-power meters. SUBSTANCE: device that functions to maintain equal amplitudes of input and output voltages in case of action of destabilizing factors and spread in parameters of components has series-connected adjustable 90-deg. phase shifter and amplifier, limiting amplifier, EXCLUSIVE OR gate, differential integrator connected to control input of adjustable phase shifter whose input that also functions as device input is coupled with input of second limiting amplifier connected to second input of mentioned gate and to input of first rectifier; output of the latter is connected to input of second EXCLUSIVE OR gate and to input of second differential integrator whose second input is coupled through second rectifier with output of adjustable amplifier; input of the latter is connected to output of differential integrator and second input of second EXCLUSIVE OR gate is connected to output of first one and output, to second input of first differential integrator. EFFECT: enlarged functional capabilities. 2 dwg