Title:
SURGE PROTECTION CIRCUIT AND SURGE PROTECTIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/000791
Kind Code:
A1
Abstract:
A surge protection circuit, comprising: a varistor, a gas discharge tube, a transient diode, a boosted circuit and a rectifying circuit. A current of the transient diode is collected by means of the boosted circuit, and a high voltage is generated; then by means of the rectifying circuit, the high voltage is rectified into a trigger high voltage capable of triggering the gas discharge tube, the gas discharge tube can thus be triggered to switch on, such that a high current is discharged by means of the varistor in series connection with a gas discharge tube branch at moments of thunder, lightning and the like. It is thus clear that by adopting the present solution, the transient diode has fast response speed under impact of thunder and lightning currents; while discharging parts of the thunder and lightning currents, the currents are collected, and by means of the boosted circuit and the rectifying circuit triggering the varistor in series connection with a gas discharge tube branch, most of the thunder and lightning currents are discharged. In addition, the present solution does not require an inductor, and the circuit is small in size; without an inductor consuming energy, and power consumption of the whole surge protection circuit is reduced. Besides, the transient diode in the present solution has the function of clamp voltage, and a limiting voltage of a surge protective device can be reduced.
Inventors:
CHEN MAOSEN (CN)
CHENG DACHUAN (CN)
YANG GUOHUA (CN)
LEI CHENGYONG (CN)
CHENG DACHUAN (CN)
YANG GUOHUA (CN)
LEI CHENGYONG (CN)
Application Number:
PCT/CN2016/113913
Publication Date:
January 04, 2018
Filing Date:
December 30, 2016
Export Citation:
Assignee:
SICHUAN ZHONGGUANG LIGHTNING PROTECTION TECH CO LTD (CN)
International Classes:
H02J9/04
Foreign References:
| CN106159926A | 2016-11-23 | |||
| CN205829161U | 2016-12-21 | |||
| US4683514A | 1987-07-28 | |||
| CN202268694U | 2012-06-06 | |||
| CN1601843A | 2005-03-30 | |||
| CN103036224A | 2013-04-10 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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