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Patent Searching and Data


Title:
SWITCH QUANTITY OUTPUT CIRCUIT, CIRCUIT BOARD ASSEMBLY AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/110995
Kind Code:
A1
Abstract:
The embodiments of the present application relate to the technical field of circuits. Provided are a switch quantity output circuit, a circuit board assembly and an electronic device. The circuit comprises a control circuit, a contact switch, a coil, a first over-voltage protection component and a second over-voltage protection component; a first end of the control circuit is connected to a first end of the coil, a second end of the control circuit is connected to a second end of the coil, and distributed capacitance exists between the contact switch and the coil; the control circuit controls the connection and disconnection of the contact switch by adjusting a magnetic field of the coil; a first end of the first over-voltage protection component is connected between the first end of the control circuit and the first end of the coil, and a second end of the first over-voltage protection component is connected between the second end of the control circuit and the second end of the coil; and a first end of the second over-voltage protection component is connected between the second end of the control circuit and the second end of the coil, and the second end of the second over-voltage protection component is connected to protection ground.

Inventors:
LI XIAOGANG (CN)
Application Number:
PCT/CN2021/118857
Publication Date:
June 02, 2022
Filing Date:
September 16, 2021
Export Citation:
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Assignee:
ZTE CORP (CN)
International Classes:
H02H9/04
Foreign References:
CN205029328U2016-02-10
CN201113426Y2008-09-10
CN102122142A2011-07-13
US5229695A1993-07-20
Attorney, Agent or Firm:
SHANGHAI CHENHAO INTELLECTUAL PROPERTY LAW FIRM GENERAL PARTNERSHIP (CN)
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