DEVICE FOR MEASURING CAPACITANCE AND DIELECTRIC LOSS OF CAPACITANCE DETECTOR Russian patent published in 2005 - IPC

FIELD: measurement engineering.

SUBSTANCE: device has two oscillators, microcontroller, digital indicator, capacitance detector, reference capacitance capacitor, four-time-setting resistors, four switches, power supply. Outputs of oscillator are connected to complementing inputs of first and second counters of microcontroller correspondingly. One output of terminal of microcontroller is connected to digital indicator. Four outputs of terminal of microcontroller are connected with outputs for switch control. Reference capacitor and second and fourth time-presetting resistors are introduced into time-presetting circuit of oscillator. Time-presetting resistors have first outputs connected to first plates of capacitance detector and capacitor of reference capacitance correspondingly; the second plates are connected with first outputs of corresponding switches. Second outputs of switches are connected to positive terminal of power supply. Second outputs of capacitance detector and capacitor reference capacitance capacitor are connected with common wire.

EFFECT: widened operational capabilities.

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