| 摘要 |
PURPOSE:To detect automatically whether disconnection in a conductor exists or not by clipping a multi-core flat cable by means of electrodes, connecting an AC oscillator to one electrode and an AC voltmeter to the other electrode and detecting very little change of a capacitance. CONSTITUTION:The conductors 2 of a multi-core flat cable 1 are made a batch grounding at an optional point, the AC oscillator 7 is connected to the electrode 6 clipping the cable 1 and impresses an AC voltage to it. An AC voltmeter 9 is connected to the electrode 6' via a current-voltage conversion amplifier 8. If the disconnection occurs in the conductors 2, due to decreasing a shield effect between the electrode 6 and 6', the change of a capacitance is detected by the voltmeter 9. Accordingly, this detector is placed on the way of a product line, and traveling the cable 1, disconnection of the conductors is thereby detected.
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