Sensor for measuring electrical characteristics
A voltage sensor and current sensor technology, applied in the field of sensors, can solve the problems of different product quality, uniform spacing of difficult winding wires, etc.
Active Publication Date: 2012-05-23
PLASMART CO LTD
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Problems solved by technology
When manufacturing an inductor by this winding method, it is difficult to make the spacing between the winding wires uniform
Therefore, it is difficult to make the sensor itself have the required high precision, and the product quality may vary from one product to another
Method used
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[0021] Exemplary embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. The terms or words used in this specification and the appended claims should not be limited to the ordinary meaning or the meaning of the dictionary, but should be based on the principle that the inventor can correctly define the concept of the term so that it can be interpreted by the best method In the present invention, these terms or words are interpreted into meanings and concepts corresponding to the technical connotation of the present invention.
[0022] Therefore, the embodiments described in this specification and the structures shown in the accompanying drawings are only preferred embodiments of the present invention, and may not fully describe the above-mentioned technical connotation. It should thus be understood that various equivalents and modifications that can replace the above-described embodiments can be provided in appl...
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The present invention provides a sensor for measuring electrical characteristics. The sensor comprises a printed circuit board, a voltage sensor and a current sensor; wherein the printed circuit board is used for defining a round through-hole into which a power transmission line is inserted; the voltage sensor comprises a ring-shaped electrode and a first terminal portion in order to measure a voltage formed in the power transmission line, wherein the electrode is fixed against the inner periphery of the through-hole to measure a voltage formed in the power transmission line, and the first terminal portion has one end which contacts one side of the electrode and the other end which is exposed through a side of the printed circuit board; and the current sensor comprises a pick up coil and a second terminal portion in order to measure a current flowing in the power line, wherein the pick up coil wound like a spring and bent along the outer periphery of the through-hole so as to form a doughnut shape when viewed from above, and arranged with at least a portion thereof embedded in the printed circuit board, and the second terminal portion extends from both ends of the pick up coil and is exposed through a side of the printed circuit board.
Description
technical field [0001] The present invention relates to sensors, and more particularly, the present invention relates to sensors capable of measuring electrical properties such as current and voltage. Background technique [0002] Alternating current (AC) has been used as a means of power supply and signal transmission in various industrial fields. Due to the low probability of transmission line corrosion and the ease of voltage conversion, alternating current has been widely used as a method of transmitting power generated by a generator to a load and as a signal or power supply means for communication equipment and medical equipment. In addition, alternating current has been widely used as a power supply means for generating plasma inside semiconductor manufacturing equipment such as plasma etching chambers. [0003] Since the operating characteristics of some electronic devices are very sensitive to the electrical characteristics of the alternating current supplied by th...
Claims
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IPC IPC(8): G01R19/00G01R29/00
CPCG01R15/165G01R15/181G01R15/142G01R19/00G01R29/00
Inventor 李相元金宰显
Owner PLASMART CO LTD