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Title:
AUXILIARY POWER SUPPLY CIRCUIT AND CONTACTOR APPLYING SAME
Document Type and Number:
WIPO Patent Application WO/2019/196523
Kind Code:
A1
Abstract:
An auxiliary power supply circuit and a contactor applying same. The auxiliary power supply circuit comprises a contactor coil, a transformer, a fly-wheel diode on the primary side of the transformer, and a switching circuit on the secondary side of the transformer, and a rectifying and filtering circuit. By collecting current flowing through an inter-turn capacitor of the contactor coil, performing energy conversion on the current by means of the transformer, and then using the current as the output of an auxiliary power supply, the problem of large loss of a linear power supply is solved. Moreover, the auxiliary power supply circuit is much simpler than a switching power supply, and does not need any additional control circuit.

Inventors:
SU, Junxi (Unit 8G, Building A3 Pearl River Square, No. 9009, Longxiang Avenue, Longcheng Road,Longgang Distric, Shenzhen Guangdong 1, 518171, CN)
Application Number:
CN2019/070644
Publication Date:
October 17, 2019
Filing Date:
January 07, 2019
Export Citation:
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Assignee:
SHENZHEN NANYUN MICROELECTRONICS CO., LTD (Unit 8G, Building A3 Pearl River Square, No. 9009, Longxiang Avenue, Longcheng Road,Longgang Distric, Shenzhen Guangdong 1, 518171, CN)
International Classes:
H01H47/22
Foreign References:
CN105551885A2016-05-04
CN104576203A2015-04-29
CN101430990A2009-05-13
CN103117192A2013-05-22
CN206421994U2017-08-18
US20110242723A12011-10-06
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (Room 2305-06 Yuehai Group Building, 555 Dong Feng Dong Road Yuexiu Distric, Guangzhou Guangdong 0, 510050, CN)
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