| 摘要 |
<p>PURPOSE:To make the detector small-size and compact by detecting three required quantities of potential differences by two capacitors having different capacity values arranged in close contact with a main circuit conductor and a potential difference detection means and operating the potential of the main circuit conductor on the basis of three quantities of potential differences and the capacity values of two capacitors. CONSTITUTION:Three quantities of potential differences (V-V1), (V-V2), (V1-V2) are obtained by two capacitor 2, 3 having known capacity values arranged in close contact with a main circuit conductor and a potential difference detection circuit 5. Three quantities of the potential differences are respectively converted to light signals having corresponding intensities by a V/F converter circuit 7 and an electro-optical converter circuit 8 and operation is executed on the basis of five known quantities C1, C2, (V-V1), (V-V2), (V1-V2) including the known capacity values C1, C2 of two capacitors 2, 3 and the potential V of the main circuit conductor is calculated.</p> |
