| 摘要 |
<p>PURPOSE:To detect a current independently of the size of a leaked current by providing the titled device with a magnetic multi-circuit including a saturable reactor, a duty detecting circuit and a frequency detecting circuit. CONSTITUTION:The titled device is provided with the magnetic multi-circuit D including the saturable reactor, the circuit E detecting duty at the time when the current to be detected which is outputted from the circuit D is low and the prestage frequency detecting circuit F detecting frequency when the current to be tested which is outputted from the circuit D is high. When the current to be detected is low, the duty of the magnetic multi-circuit D is detected. Since the oscillation frequency of the output from the circuit D is increased when the current to be detected is high, the frequency is detected. Thus, the current to be detected can be securely detected. Therefore, the current to be detected can be detected independently of the size of leaked current or the like.</p> |
