Title:
POWER-ON/POWER-OFF DRIVE CIRCUIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/101647
Kind Code:
A1
Abstract:
A power-on/power-off drive circuit and a control method therefor. The power-on/power-off drive circuit comprises: a load (7), a switch circuit (8), a relay (9) and a single-source drive circuit (10), wherein one end of the load is connected to a positive electrode of a first external power supply; a first input end (8a) of the switch circuit and a normally-open contact (9a) of the relay are respectively connected to the other end of the load, and an output end (8c) of the switch circuit and a normally-closed contact (9b) of the relay are respectively connected to a negative electrode of the first external power supply; one end of a coil in the relay and a first input end (10a) of the single-source drive circuit are respectively connected to a positive electrode of a second external power supply, and the other end of the coil in the relay is connected to a second input end (10b) of the single-source drive circuit; and a first output end (10c) of the single-source drive circuit is connected to a second input end (8b) of the switch circuit, a second output end (10d) of the single-source drive circuit is connected to the output end of the switch circuit, and a third output end (10e) of the single-source drive circuit is connected to a negative electrode of the second external power supply. The power-on/power-off drive circuit and the control method therefor fall within the technical field of electronics, and reduce the volume of the power-on/power-off drive circuit.
Inventors:
YANG JING (CN)
ZHANG PENG (CN)
ZHANG PENG (CN)
Application Number:
PCT/CN2016/106912
Publication Date:
June 22, 2017
Filing Date:
November 23, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M1/36; H02M1/32
Foreign References:
| CN105553246A | 2016-05-04 | |||
| CN103647441A | 2014-03-19 | |||
| CN101316040A | 2008-12-03 | |||
| CN103707772A | 2014-04-09 | |||
| US20020060895A1 | 2002-05-23 | |||
| JP2013074741A | 2013-04-22 |
Other References:
See also references of EP 3382872A4
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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