Title:
OVER AND UNDER VOLTAGE PROTECTION CIRCUIT AND SET-TOP BOX
Document Type and Number:
WIPO Patent Application WO/2018/103574
Kind Code:
A1
Abstract:
An over and under voltage protection circuit, comprising: a voltage determination module, which is configured to be connected to a voltage input terminal, for use in detecting an input voltage range and outputting a control signal according to the input voltage range; a control module, a first terminal being connected to an output terminal of the voltage determination module, a second terminal being configured to be connected to the voltage input terminal, and a third terminal being configured to be connected to a DC-DC power supply circuit; the control module is configured to control disconnection and conduction between the voltage input terminal and the DC-DC power supply circuit according to the control signal of the voltage determination module.
Inventors:
DING QIANLI (CN)
PAN QINGSI (CN)
PAN QINGSI (CN)
Application Number:
PCT/CN2017/113744
Publication Date:
June 14, 2018
Filing Date:
November 30, 2017
Export Citation:
Assignee:
SHENZHEN SKYWORTH DIGITAL TECH CO LTD (CN)
International Classes:
H02H3/20
Foreign References:
CN105226604A | 2016-01-06 | |||
CN200950534Y | 2007-09-19 | |||
CN104821554A | 2015-08-05 | |||
CN206452095U | 2017-08-29 | |||
CN201041938Y | 2008-03-26 | |||
US20090046406A1 | 2009-02-19 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
Previous Patent: TROCAR COMPRISING TWO PROTECTIVE COVERS
Next Patent: POLYTEREPHTHALATE-CO-SEBACATE RESIN AND METHOD FOR PREPARING SAME
Next Patent: POLYTEREPHTHALATE-CO-SEBACATE RESIN AND METHOD FOR PREPARING SAME