| 摘要 |
PROBLEM TO BE SOLVED: To provide a leakage check device in which the main switch does not malfunction at the time of leakage check and a detection sensitivity of a receiver is uniformized, by sending a current of a prescribed frequency from a transmitter into a wiring path and by receiving a magnetic flux generated by the current of the prescribed frequency by a receiver, concerning, for example, a leakage check device by which the leakage check of a load connected to the wiring path is performed. SOLUTION: A constant-current circuit 34 has two constant-current sources 35, 36 having respectively different current values, and the current value of a current sent into a wiring path is changed over by changing over a switch SW. A switch element 40 is changed over between ON state and OFF state by the output of a control circuit 39, and by switching the current of the constant-current sources 35, 36, the current of a prescribed frequency is generated completely, and the current of the prescribed frequency is sent into a wiring path where a transmitter is connected.
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