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

An electronic switch and power supply circuit technology, applied in circuit devices, AC network circuits, electrical components, etc., can solve the problems of high input cost, poor working stability, and high power consumption, and achieve low input cost, stable working performance, and power consumption. low effect

Active Publication Date: 2015-06-03
宋刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Such as Figure 5 The two-wire electronic switch off-state power supply circuit shown includes an externally excited switching power supply and a self-closing start circuit. The externally excited switching power supply includes a transformer T2, a first switching tube, a switching tube control circuit 16 that controls the first switching tube, and an output voltage detection circuit that detects the output voltage of the transformer T2. The output voltage The detection circuit is connected to the switch control circuit 16. The transformer T2 includes a primary winding N11 and a secondary winding N21. The output terminal of the switching tube control circuit 16 is connected to the first terminal of the first switching tube, one terminal of the primary winding N11 is connected to the DC power supply and the other terminal is connected to the first terminal of the first switching tube. The second terminal is connected. One terminal of the secondary winding N21 is grounded...

Embodiment 2

[0097] Such as Picture 12 As shown, in this embodiment, the two-wire electronic switch off-state power supply circuit used is different from Embodiment 1 in that the first switch tube is a composite transistor Q61. The composite triode Q61 is formed by connecting two transistors. The base of the composite triode Q61 is connected to the switch control circuit 16 and its emitter is grounded. The collector of the composite triode Q61 is connected to the anode of the diode D35. Among them, the purpose of using the composite transistor Q61 is to increase the magnification of the first switch tube.

[0098] In this embodiment, the circuit composition and connection relationship of the remaining parts of the two-wire electronic switch off-state power supply circuit used are the same as those in the first embodiment.

[0099] In this embodiment, the smart switch used is the same as the first embodiment.

Embodiment 3

[0101] Such as Figure 13 As shown, in this embodiment, the two-wire electronic switch off-state power supply circuit used is different from Embodiment 1 in that the second switch tube is a composite transistor Q71. The base of the composite transistor Q71 is connected to the negative electrode of the voltage regulator tube Z1 and its base is connected to the VCC power terminal through a resistor R34. The emitter of the composite transistor Q71 is respectively connected to the voltage output terminal VDD of the transformer T2 and the switch control circuit 16 is connected, and the collector of the composite transistor Q71 is connected to the VCC power terminal through the resistor R33.

[0102] In actual use, the second switch tube uses a composite transistor Q71, and the resistor R34 uses a large resistance resistor, so that after the composite transistor Q71 and the resistor R34 are connected in series, the static state of the self-closing startup circuit after self-closing can ...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 宋刚
Owner 宋刚
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