Title:
ELECTROMAGNETIC INTERFERENCE FILTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/171095
Kind Code:
A1
Abstract:
The present invention provides a common mode choke coil and an electromagnetic interference filter circuit. The common mode choke coil comprises a first primary winding, a second primary winding, and a secondary winding. The secondary winding is electromagnetically coupled with the first primary winding and the second primary winding. The common mode choke coil is additionally provided with a first resistor and a first inductance connected in series to both ends of the secondary winding. The number of turns in the first primary winding is set so as to be more than the number of turns in the secondary winding. The number of turns in the second primary winding is set so as to be more than the number of turns in the secondary winding.
Inventors:
DAI LI YU (CN)
CHEN WEN JIE (CN)
ZHENG MING HUA (CN)
CHEN WEN JIE (CN)
ZHENG MING HUA (CN)
Application Number:
PCT/JP2020/006386
Publication Date:
August 27, 2020
Filing Date:
February 19, 2020
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H03H11/04; H01F27/00; H01F37/00; H03H7/09
Foreign References:
| JP2018157747A | 2018-10-04 | |||
| JP2016516318A | 2016-06-02 | |||
| JP2004180497A | 2004-06-24 | |||
| JP2017038500A | 2017-02-16 | |||
| US6898092B2 | 2005-05-24 |
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (JP)
Download PDF: