Daihen Corporation

Tomohiko Kitano

Shigeki Amadatsu

Yoshifumi Ibuki

Shuji Omae

A voltage detector having a voltage detection printed board including a board having a penetration hole that penetrates the board, a first pattern wire formed at a periphery of the penetration hole, a second pattern wire formed at the periphery of the penetration hole, and a plurality of through holes that penetrate the board between the first and second pattern wires. Also provided is a conductive casing in which the voltage detection printed board is fixed, wherein, when a conductor, in which AC voltage is generated, is disposed to pass through the penetration hole, the pattern wires act with the conductor to function as electrodes of a capacitor.

Voltage detector having voltage detection printed board

A current detection printed board includes: a board having a penetration hole that penetrates the board; and at least one wire that is formed in a coiled shape having both ends by penetrating the board along the periphery of the penetration hole and alternately connecting a front surface layer and a rear surface layer of the board, wherein, when a conductor, in which an AC current flows, is disposed to pass through the inside of the penetration hole, a current flowing in the wire is output through electromagnetic induction.

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Osaka, Japan

Tomohiko Kitano