POWER-DOWN ALARMING CIRCUIT AND NETWORK DEVICE

Title:

POWER-DOWN ALARMING CIRCUIT AND NETWORK DEVICE

Document Type and Number:

WIPO Patent Application WO/2016/201603

Kind Code:

A1

Abstract:

A power-down alarming circuit and a network device, comprising: a flow-back prevention unit, a voltage promotion unit, an energy storage unit, an output control unit and a detection unit, wherein, the voltage promotion unit, when starting the input power of the power-down alarming circuit, is used for performing voltage promotion on the input power voltage of the power-down alarming circuit in order to charge the energy storage unit in high voltage; the energy storage unit, when shutting down the input power of the power-down alarming circuit, is used for providing operating voltage for post-stage circuit of the power-down alarming circuit by means of the output control unit; the output control unit, when shutting down the input power of the power-down alarming circuit, is used for performing voltage-stabilization on the output voltage of the energy storing unit, and outputting stabilized voltage to the post-stage circuit of power-down alarming circuit. The embodiments of the present invention provide a circuit solution with smaller size.

Inventors:

XUE JIANLIN (CN)
ZENG XIAOFEI (CN)
HE ZHI (CN)
FANG HONGBIN (CN)

Application Number:

PCT/CN2015/081451

Publication Date:

December 22, 2016

Filing Date:

June 15, 2015

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

H02J9/04

Foreign References:

CN103580272A	2014-02-12
CN102111011A	2011-06-29
CN102315637A	2012-01-11
US20110218692A1	2011-09-08