Off-state power supply circuit for two-wire system electronic switch and intelligent switch

Abstract

The invention discloses an off-state power supply circuit for a two-wire system electronic switch. The off-state power supply circuit comprises a separate excitation switching power supply and a self-closing type starting circuit, wherein the separate excitation switching power supply comprises a transformer T2, a first switching tube, a switching tube control circuit controlling the first switching tube, and an output voltage detection circuit detecting the output voltage of the transformer T2; the transformer T2 comprises a primary winding and a secondary winding; the self-closing type starting circuit comprises a second switching tube and a voltage stabilizer tube Z1. The off-state power supply circuit is simple and reasonable in design, good in using effect, and stable in working performance. The invention further discloses an intelligent switch. The intelligent switch comprises a mechanical switch, a remote controller and a remote control module, wherein the remote control module comprises an electronic switch, an on-off state detection circuit, an on-off control circuit, a wireless communication module, the off-state power supply circuit of the two-wire system electronic switch and an on-state power supply circuit; the intelligent switch is additionally provided with the remote control function while retaining the operation manner of the mechanical switch.

Description

Technical field [0001] The invention belongs to the technical field of electronic switch applications, and particularly relates to an off-state power supply circuit for a two-wire electronic switch and an intelligent switch. Background technique [0002] According to the number of outer leads, the switch wiring mode is divided into two-wire system (also called two-wire system), three-wire system and four-wire system, among which two-wire switch and three-wire switch are more commonly used. Among them, the two-wire switch means that there are two outer leads, such as figure 1 As shown, the mechanical switch 4 for on-off control of the power supply circuit of the household appliance usually adopts a two-wire system. The household appliance is a lamp 13, and the two terminals of the lamp 13 are the live wire terminal and the neutral wire terminal. The terminal is connected to the neutral line N in the power supply circuit. The two terminals of the mechanical switch 4 are respectivel...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a two-wire electronic switch off-state power supply circuit for the above-mentioned deficiencies in the prior art. The power supply circuit has problems such as high input cost, poor working stability, and high power consumption.

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