Title:
IMMERSION ELECTRIC SHOCK PREVENTION CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/174747
Kind Code:
A1
Abstract:
An immersion electric shock prevention circuit, comprising an alternating current power supply, a load circuit, an equivalent circuit in which a human body grounding point forms a loop relative to an indoor nearby grounding point, a voltage division circuit, a first switch (S1) and a second switch (S2). Two ends of the load circuit are respectively connected to a live wire and a null wire of the alternating current power supply; one end of the second switch (S2) is connected to the live wire, and the other end of the second switch is respectively connected to the equivalent circuit, one end of the first switch (S1) and one end of the voltage division circuit; two ends of the equivalent circuit are respectively grounded; and the other end of the first switch (S1) is respectively connected to the other end of the voltage division circuit, the null wire and a ground wire. On the basis of the circuit, further provided is an electric shock prevention method, which is simple, reliable, effective and low in cost while achieving the effect that: when a bare terminal having strong current is soaked in water, power can still be supplied to the load and the danger that a human body is shocked during power use when being in direct contact with the water is avoided.
Inventors:
LI XIANGGUO (CN)
WANG JIANXIN (CN)
WANG JIANXIN (CN)
Application Number:
PCT/CN2020/103157
Publication Date:
September 10, 2021
Filing Date:
July 21, 2020
Export Citation:
Assignee:
SHENZHEN GAOSID ELECTRONIC CO LTD (CN)
International Classes:
H02H5/12
Foreign References:
| CN111193241A | 2020-05-22 | |||
| CN211670621U | 2020-10-13 | |||
| CN202034760U | 2011-11-09 | |||
| CN102646973A | 2012-08-22 | |||
| CN106340852A | 2017-01-18 | |||
| CN201243193Y | 2009-05-20 | |||
| CN203086106U | 2013-07-24 | |||
| EP1372236A2 | 2003-12-17 |
Attorney, Agent or Firm:
SHENZHEN TIANYUAN INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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