| 摘要 |
PURPOSE: An insulation resistor measuring circuit using a resistor connected to a battery is provided to simply measure an insulation resistor by determining the variation of a voltage sensed through an operational amplifier based on the voltage of an insulation resistor measuring battery. CONSTITUTION: A source resistor(103,104) includes a first source resistor and a second source resistor. The first source resistor is connected to the second source resistor and a plus terminal of an insulation resistor measurement battery and a second source resistor connected to the first source resistor and a minus terminal of the insulation resistor measurement battery. A voltage sensor(110,120,150) senses the voltage of the first source resistor as a first voltage, senses the voltage of the second source resistor as a second voltage, and sense the voltage of the insulation resistor measurement battery as a fifth voltage. |
