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

• US 8,427,134 B2
• Filed: 01/26/2011
• Issued: 04/23/2013
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Daihen Corporation
• Original Assignee: Daihen Corporation
• Inventors: Ibuki, Yoshifumi, Omae, Shuji, Ito, Hideo
• Primary Examiner(s): BENITEZ ROSARIO, JOSHUA
• Application Number:
  US13/014,288
• Publication Number:
  US 20110115466A1
• Time in Patent Office: 818 Days
• Field of Search: 324/117.R, 324/117.H, 324/127, 336/200
• US Class Current: 324/127
• 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 in an arc shape;

a second pattern wire formed at the periphery of the cutout in an arc shape; 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 and the through holes with the conductor form electrodes of a capacitor to detect the AC voltage generated in the conductor.

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 cutout 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.

6. The voltage detection printed board according to claim 1, wherein the second pattern wire is the same shape as the first pattern wire.

7. The voltage detection printed board according to claim 1, wherein the first and second pattern wires are formed along the cutout.

8. The voltage detection printed board according to claim 1, wherein the cutout has a semicircular shape, and is formed on an edge of the board.

9. The voltage detection printed board according to claim 1, further comprising an output wire that is connected to at least a part of one of the first and second pattern wires and the through holes, and that outputs a voltage generated in the first and second pattern wires and the through holes, which function as the electrodes of the capacitor.

10. The voltage detection printed board according to claim 1, wherein the AC voltage generated in the conductor induces a voltage in the first and second pattern wires which indicates the AC voltage generated in the conductor.