Current detection printed board, voltage detection printed board, and current/voltage detector using same, and current detector and voltage detector

Abstract

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.

1 . A current detection printed board, comprising:
 a board including a first layer having a first front face and a first rear face, the board being formed with a penetration hole which is adapted to allow a conductor, in which an AC current flows, to pass therethrough; and   a first current transformer consisting of a first single wire extending at a periphery of the penetration hole while penetrating the first layer and alternately passing over the first front face and the first rear face.   
   
   
       2 . The current detection printed board according to  claim 1 , wherein:
 the first layer is formed with a plurality of first through holes; and   the first single wire includes printed patterns passing over the front face and the rear face of the first layer, and parts penetrating the first through holes.   
   
   
       3 . The current detection printed board according to  claim 1 , wherein:
 the front face is a front face of the board.   
   
   
       4 . The current detection printed board according to  claim 1 , wherein:
 the rear face is a rear face of the board.   
   
   
       5 . The current detection printed board according to  claim 1 , further comprising:
 output terminals provided on the board and electrically connected to the first current transformer.   
   
   
       6 . The current detection printed board according to  claim 1 , further comprising:
 a current converter provided on the board and electrically connected to the first current transformer.   
   
   
       7 . The current detection printed board according to  claim 1 , wherein:
 the first layer includes at least a pair of conductive layers sandwiching an insulative layer therebetween.   
   
   
       8 . The current detection printed board according to  claim 1 , further comprising:
 a second current transformer consisting of a second single wire extending at the periphery of the penetration hole while penetrating a second layer of the board and alternately passing over a second front face and a second rear face of the second layer.   
   
   
       9 . The current detection printed board according to  claim 8 , wherein:
 the second layer is formed with a plurality of second through holes; and   the second single wire includes printed patterns passing over the second front face and the second rear face, and parts penetrating the second through holes.   
   
   
       10 . The current detection printed board according to  claim 8 , wherein:
 the second front face is a front face of the board.   
   
   
       11 . The current detection printed board according to  claim 8 , wherein:
 the rear face is a rear face of the board.   
   
   
       12 . The current detection printed board according to  claim 8 , wherein:
 the second layer is identical with the first layer.   
   
   
       13 . The current detection printed board according to  claim 8 , wherein:
 the second layer is different from the first layer.   
   
   
       14 . The current detection printed board according to  claim 8 , wherein:
 the first current transformer is electrically connected to the second current transformer in series.   
   
   
       15 . The current detection printed board according to  claim 8 , wherein:
 the first current transformer is electrically connected to the second current transformer in parallel.   
   
   
       16 . The current detection printed board according to  claim 8 , wherein:
 the first current transformer and the second current transformer extend so as to form a double helix.