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Silicon controlled rectifier single live wire power taking circuit and power taking method

A single live wire, electric method technology, applied in the direction of circuit devices, electrical components, climate sustainability, etc., can solve the problems of weak driving ability of single live wire power supply of high-power devices, large loss of single live wire power supply, low conversion efficiency, etc., to achieve Improved power conversion efficiency, strong drive capability, and low cost

Inactive Publication Date: 2020-03-10
SUZHOU DIFEN DE INTERNET OF THINGS TECH
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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 silicon controlled rectifier single live wire power supply circuit and a power collection method, which solves the problem of weak power supply drive capability of single live wire power supply for high-power devices and large power loss of single live wire power supply for low-power devices in the prior art. The problem of low conversion efficiency

Method used

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  • Silicon controlled rectifier single live wire power taking circuit and power taking method

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specific Embodiment 1

[0032] Specific embodiment one, such as figure 1 shown:

[0033] A thyristor single live wire power taking circuit includes a thyristor rectifier circuit, an AC-DC conversion circuit, a switch control circuit, and a filter circuit; wherein the thyristor rectifier circuit and the AC-DC conversion circuit alternately supply power to a load, and a switch The control circuit is used to control the working time of the thyristor rectifier circuit and the AC-DC conversion circuit. The incoming end of a single live wire is connected in series with the fuse F1, and the outgoing end is connected to the load. This embodiment takes the LED lamp LED1 as an example to illustrate.

[0034] The thyristor rectifier circuit includes a first bidirectional thyristor Q1, an overload protection circuit, and a rectifier bridge D1; the overload protection circuit includes a fuse F2 and a second transient suppression diode TVS2, and an input end of the first bidirectional thyristor Q1 is connected to ...

specific Embodiment 2

[0044] A method for taking electricity from a single live wire of a thyristor includes two working states in one working cycle, one is the working state when the AC appliance is turned on, and the other is the working state when the AC appliance is turned off, and the specific control is as follows:

[0045] When the AC appliance is turned on, the thyristor rectifier circuit is turned on. At this time, the AC-DC conversion circuit is in a dormant state, and the DC voltage of the load is provided by the thyristor rectifier circuit;

[0046] When the AC appliance is turned off, the thyristor rectifier circuit is turned off, and the AC-DC conversion circuit is in a working state at this time, and the DC voltage of the load is provided by the AC-DC conversion circuit.

[0047] When the AC appliance is turned on, a high voltage is applied to the input terminal of the optical coupling thyristor, the optical coupling thyristor and the second triac are turned on in turn, and the voltag...

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Abstract

The invention discloses a silicon controlled rectifier single live wire power taking circuit, which comprises a silicon controlled rectifier circuit, an AC-DC conversion circuit and a switch control circuit, wherein the silicon controlled rectifier circuit and the AC-DC conversion circuit alternately supply power to a load, and the switch control circuit is used for controlling the working time ofthe silicon controlled rectifier circuit and the AC-DC conversion circuit. Two working states are included in one working period, one working state is a working state when an AC electric appliance isturned on, and the other working state is a working state when the AC electric appliance is turned off. The circuit provided by the invention solves the problem of power taking of an electronically controlled power supply in an environment without a zero wire. The characteristics of low loss, strong driving capability and the like are realized. Two circuits with different working states are usedfor supplying power to a load, so that different modules are used for supplying power in different stages, and the problem of poor driving capability of a load with high power is avoided. According tothe power taking method, the power conversion efficiency is greatly improved, and the power taking method is suitable for various electronic devices, simple in circuit and low in cost.

Description

technical field [0001] The invention belongs to the field of power supply for household electrical appliances, in particular to a thyristor single live wire power taking circuit and a power taking method. Background technique [0002] With the rapid development of smart home, the single live wire smart home switch (only a single live wire in / out, no zero wire is required) has become an upgraded product of the traditional mechanical wall switch, realizing the intelligent control of lamps and electrical switches (such as Voice-activated switch, touch switch, infrared remote control switch, human body sensor switch, mobile phone control WIFI smart switch, etc.). In addition, most ordinary households at home and abroad use single live wire wiring. When upgrading to realize intelligent transformation, it is often required that new intelligent switches can directly replace the old mechanical wall switches without rewiring. Therefore, the development of new electronic intelligent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/00H02M1/36
CPCH02J9/005H02M1/36Y02B70/30Y04S20/20
Inventor 刘利风张盼辉
Owner SUZHOU DIFEN DE INTERNET OF THINGS TECH