CURRENT DETECTION PRINTED BOARD, VOLTAGE DETECTION PRINTED BOARD, CURRENT/VOLTAGE DETECTION PRINTED BOARD, CURRENT/VOLTAGE DETECTOR, CURRENT DETECTOR AND VOLTAGE DETECTOR

• US 20110115466A1
• Filed: 01/26/2011
• Published: 05/19/2011
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Daihen Corporation
• Original Assignee: Daihen Corporation
• Inventors: ITO, Hideo, OMAE, Shuji, IBUKI, Yoshifumi
• Granted Patent: US 8,427,134 B2
• Time in Patent Office: Days
• US Class Current: 324/76.11
• CPC Class Codes: G01R 15/142 Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
• CPC Class Codes: G01R 15/18 using inductive devices, e.g. transformers
• CPC Class Codes: G01R 15/181 using coils without a magnetic core, e.g. Rogowski coils

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.

Claims

1. A voltage detection printed board comprising:

a board having a cutout;

a first pattern wire formed at a periphery of the cutout;

a second pattern wire formed at the periphery of the cutout; and

a plurality of through holes that penetrate the board between the first and second pattern wires,

wherein, when a conductor, in which an AC voltage is generated, is disposed adjacent to the cutout, the first and second pattern wires act with the conductor to function as electrodes of a capacitor.

2. The voltage detection printed board according to claim 1, wherein the first pattern wire is formed on a top conductive layer of the board, and the second pattern wire is formed on a bottom conductive layer of the board.

3. The voltage detection printed board according to claim 1, wherein the board comprises a plurality of layers, and the first and second pattern wires are formed between layers of the board.

4. The voltage detection printed board according to claim 1, wherein the output has a semicircular shape, and each of the first and second pattern wires is formed in a semicircular shape at the periphery of the cutout.

5. The voltage detection printed board according to claim 1, wherein the AC voltage is an AC voltage having a frequency of a radio frequency band.