DEVICE FOR MEASURING CAPACITOR CAPACITANCE Russian patent published in 2001 - IPC

FIELD: electric engineering. SUBSTANCE: device has alternating current power supply source one of leads of which is connected to common bus and the second one is connected through separating capacitor to the first outputs of the first and the second pairs of diodes connected in series. The diodes are connected in opposition and the connection points are connected to outputs of reference capacitor and one under measurement, respectively. The second outputs of the reference capacitor and one under measurement are connected to the common bus. The first and the second accumulating capacitors connected in series and the first and the second resistors are connected to the output of separating capacitor and the common bus. An additional output resistor is placed between the connection point of resistor and capacitor of low frequency filter and the common bus. The connection point of the first accumulating capacitor and the first resistor is connected to the second output of the first pair of diodes. EFFECT: enabled displacement of output characteristic into the area of positive or negative values of output voltage. 2 dwg