Earth leakage detecting device, and vehicular power supply system
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United States of America
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Dec 24, 2024
Grant Date -
Dec 29, 2022
app pub date -
Aug 18, 2020
filing date -
Aug 18, 2020
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Abstract
A first voltage output unit generates a cyclic voltage that changes cyclically, and applies the cyclic voltage to the other end of a coupling capacitor via a first resistance. A second resistance and a third resistance are connected in series between a node and a second voltage output unit, the node being between the coupling capacitor and the first resistance. A voltage measurement unit measures a voltage at a voltage dividing point between the second resistance and the third resistance. In a period in which two types of fixed voltages are applied to the voltage dividing point in order, a diagnosing unit determines whether the leakage detecting device is in a normal state, based on the voltage measured by the voltage measurement unit.
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