CURRENT DETECTING PRINTED BOARD, VOLTAGE DETECTING PRINTED BOARD, AND CURRENT/VOLTAGE DETECTOR AS WELL AS CURRENT DETECTOR AND VOLTAGE DETECTOR USING THE PRINTED BOARDS

摘要

PROBLEM TO BE SOLVED: To solve the problems wherein a conventional current transformer used in current detection and a capacitor used in voltage detection are likely to vary in wire shapes or the like, resulting in possible variation in detection values.;SOLUTION: A current transformer used for current detection and a capacitor used for voltage detection are formed on a printed board. A current detecting printed board 1 used for the current detection employs a coiled wire 10 formed by alternately connecting a front surface layer and a rear surface layer of the board through the board along through holes 101 provided on the board. Since the coiled wire 10 formed on the printed board 1 is formed of a through hole 11 and pattern wires 12 and 13, variation in the wire shape or the like rarely occurs, and thus the variation in the detection value is reduced. A voltage detecting printed board also employs an annular wire formed of a through hole and a pattern wire, and brings about an identical effect.;COPYRIGHT: (C)2007,JPO&INPIT