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Patent Searching and Data


Title:
POWER SUPPLY PROTECTION CIRCUIT, METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/040789
Kind Code:
A1
Abstract:
A power supply protection circuit comprises: an auxiliary winding for sampling voltages at two ends of a capacitor in a switching power supply; a resistance-capacitance (RC) charging circuit connected to the auxiliary winding and used to convert voltages sampled by the auxiliary winding into current signals; and a control circuit used to control, according to the current signals, switching on and off of the switching power supply.

Inventors:
WANG PENGCHAO (CN)
WANG HONG (CN)
GAO YANGHUAI (CN)
LIU FENG (CN)
WANG FANGCHUN (CN)
YANG YUNDONG (CN)
Application Number:
PCT/CN2017/093893
Publication Date:
March 08, 2018
Filing Date:
July 21, 2017
Export Citation:
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Assignee:
ZTE CORP (CN)
International Classes:
H02H7/125
Foreign References:
CN105004910A2015-10-28
CN101566675A2009-10-28
CN103329416A2013-09-25
CN105337260A2016-02-17
US5617013A1997-04-01
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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