CIRCUIT FOR MEASURING DIELECTRIC BREAKDOWN

摘要

The circuit of the present invention for measuring dielectric breakdown comprises an RC circuit part that includes a first sub-RC circuit comprising a first capacitor, a 1-1 resistor, a 1-2 resistor and a reference resistor and a second sub-RC circuit comprising a second capacitor and a second resistor and connecting with a battery for insulation resistance measurement; a 1-1 differential amplifier that connects with said first sub-RC circuit to amplify and output the voltage applied to said 1-2 resistor and a first differential amplification part that connects with said sub-RC circuit to amplify and output a voltage applied to said second resistor; and a second differential amplifier that connects with both said 1-1 differential amplifier and said 1-2 differential amplifier to amplify and output the difference between the output voltage of said 1-1 differential amplifier and the output voltage of said 1-2 differential amplifier.