Title:
ELECTROMAGNETIC INTERFERENCE SUPPRESSION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2023/092340
Kind Code:
A1
Abstract:
An electromagnetic interference (EMI) suppression circuit for an AC power circuit. The EMI suppression circuit comprises a sensing capacitor circuit arranged to sense an EMI signal on a power line in the AC power circuit; an amplifier circuit operably connected with an output of the sensing capacitor circuit and arranged to provide an EMI compensation signal based on the sensed EMI signal for reducing, or substantially eliminating, the EMI signal on the power line; and a coupling capacitor circuit arranged to be connected between an output of the amplifier circuit and the power line. The EMI suppression circuit further comprises a stabilization circuit connected in series with the coupling capacitor circuit and arranged to be connected between the output of the amplifier circuit and the power line, for reducing instability caused by interaction of the EMI suppression circuit with inductance in an operation environment.
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Inventors:
POON NGAI KIT FRANKI (CN)
CHAN ON BON PETER (CN)
TANG CHI KEUNG (CN)
CHAN ON BON PETER (CN)
TANG CHI KEUNG (CN)
Application Number:
PCT/CN2021/132837
Publication Date:
June 01, 2023
Filing Date:
November 24, 2021
Export Citation:
Assignee:
ANAPP TECH LIMITED (CN)
International Classes:
G01R31/00; H02J3/01; H02M1/44
Foreign References:
| CN103078490A | 2013-05-01 | |||
| CN111351995A | 2020-06-30 | |||
| CN206134504U | 2017-04-26 | |||
| CN1679222A | 2005-10-05 | |||
| JP3060267U | 1999-08-17 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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