| 摘要 |
<p>PURPOSE: To obtain an inexpensive detector for detecting a high frequency current induced in a conductor to be measured by providing a conductor having a plurality of parallel parts arranged on at least one of inner and outer surfaces of a tubular magnetic member, and a current detection means connected between the opposite terminals of the conductor. CONSTITUTION: When a high frequency current is flowing through a conductor 10 to be measured, a high frequency current is induced, in a snaking conductor 3 through electromagnetic induction caused by interlinking flux. When the frequency of high frequency current is relatively low, the high frequency currents flowing through the parallel parts of adjacent snaking conductors 3 are substantially canceled and do not appear at the output terminal. When the frequency of high frequency current flowing through the conductor 10 is high, resonance tales place due to the capacitance and inductance at the parallel parts 3A, 3B of adjacent conductors. When the strength of high frequency current is partially different, a high frequency current flows between the terminals. The high frequency current is applied to the LED 8 of current detection means and a light is emitted from the LED 8.</p> |
