Low energy consumption monopole electronic switching circuit and micro energy consumption brightening circuit of indicating lamp

Abstract

The invention relates to a low energy consumption unipolar electronic switching circuit and an indicator light micro energy consumption brightening circuit. The low energy consumption unipolar electronic switching circuit comprises a micro power consumption AC-DC switching power converter E, an electronic switching circuit F and an indicator light micro power consumption brightening circuit 10, wherein the micro power consumption AC-DC switching power converter E consists of a first rectifying circuit 1, a voltage-reducing and current-limiting circuit 2, a switching power oscillation control circuit 3, a high-frequency transformer 4, and a second rectifying circuit 5; the electronic switching circuit F consists of an electronic switch, a power circuit 8, a relay electricity-saving circuit7 and a relay switching circuit 6 and a third rectifying circuit 9; the indicator light brightening circuit 10 consists of a capacitor and a resistor; the micro power consumption AC-DC switching power converter E is connected in parallel with the AC power input end and the DC power output end of the electronic switching circuit F; the voltage-reducing and current-limiting circuit 2 is connected between the DC output end of the rectifying circuit 1 and power supplying ends of the switching power control circuit 3 and the high-frequency transformer 4; and the brightening circuit 10 is connectedbetween an anode of an LED and an induction voltage signal source.

Description

Technical field [0001] The invention relates to a power switch control device and an indicator light, in particular to a single-pole (single live line L or single neutral line N) electronic switch circuit, power supply circuit, and indicator light circuit. Background technique [0002] Currently, there are six major problems with existing unipolar electronic switches: [0003] 1. In the existing unipolar electronic switch, since the step-down current limiting circuit is connected in series between the controlled load and the AC input terminal of the rectifier circuit, when the input of 220V at the AC terminal is greater than 30 microampere current, the unipolar electronic switch will be caused. There is a problem of strobe light after the controlled electronic ballast is turned off. For example, a utility model patent of "micro-power consumption digital wireless multi-control switch power circuit, announcement number: CN 2669542Y", in which the current limiting in the standb...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the existing unipolar electronic switch, there are problems such as controlling the strobe light after the electronic ballast light is turned off, the LED cannot be used as the switch position indicator, the conduction voltage drop makes the heat generated when controlling the high-power load, and the low-power load cannot be controlled. , the technical problem to be solved by the present invention is to provide a micro energy consumption unipolar electronic switch circuit and an indicator light micro energy brightening circuit, including a unipolar micro power consumption AC-DC switching power converter, an electronic switch circuit, an indicating Light micro-power consumption brightening circuit, wherein the micro-power consumption AC-DC switching power supply converter includes: a first rectification circuit, a step-down current limiting circuit, a switching power supply oscillation control circuit, a high-frequency transformer, and a second rectification circuit. The connection relationship is that the first rectification circuit is half-wave rectification or full-wave rectification, the AC power input terminal of the first rectification circuit is connected in series between one end of the phase line of the unipolar AC power supply and one end of the load power line, and the two AC power supplies of the first rectification circuit The input terminal is connected in parallel with the two AC power supply input terminals of the electronic switching circuit, and the step-down current limiting element is a resistor or a capacitor, which is connected in series between the DC output terminal of the first rectification circuit and the power supply terminal of the switching power supply, and the switching power supply oscillation control circuit and the high frequency The transformer is electrically connected, the oscillation circuit in the switching power supply oscillation control circuit uses a field effect tube or a switching transistor or an integrated circuit, and the high-frequency transformer is electrically connected to the second rectification circuit. The high-frequency transformer coil is multi-winding, and the second rectification circuit is a half-wave rectifier. Or full-wave rectification, the first output DC power supply is connected to the power supply end of the electronic switch signal processing control circuit, and the second DC power output output by the second rectification circuit is connected to one end of the working power supply of the electronic switch relay coil; wherein, the electronic The switch circuit includes: an electronic switch device with good conduction voltage drop and good thermal characteristics, a voltage regulator tube, an electronic switch on-off trigger circuit, a relay power-saving circuit, and a relay switch circuit. The electrical connection relationship is that the conduction voltage drop is small Electronic switching regulator with good thermal characteristics, when the relay switch is off, it is connected between one end of the phase line of the unipolar power supply and one end of the relay switch, when the switch is closed or when the relay switching circuit is not used, the electronic switching device is connected to a phase of the unipolar power supply Between the line and a line of the controlled load, it is used to control the load power switch and provide power to the unipolar electronic switching circuit during work. The electronic switching device with small conduction voltage drop and good thermal characteristics is controlled by a CMOS or TTL control circuit. The different control signals generated control the conduction or cut-off of the electronic switching device. When the relay switch is closed, the electronic switching circuit starts to work, the load operating current passes through the switching device, and the regulator tube provides tens of volts of unidirectional power at both ends of the electronic switching device. AC voltage, after being rectified and stabilized, provides enough stable working power for the unipolar electronic switching circuit. The electronic switching device can be an N or P channel power field effect transistor, or one with a small conduction voltage drop and good thermal characteristics. Other electronic switching devices; a relay power-saving circuit, connected in series between the relay coil power supply on-off control circuit and the power supply, is used to further reduce the current consumption of the unipolar electronic switch when the relay is working. The electrolytic capacitor increases the pull-in current of the relay coil, and when the relay switch is closed, the electric current Resistors and diodes reduce the working current of the relay. Because the current consumption of the whole machine is reduced when the relay is working, it can keep the electronic switch circuit working reliably and stably when controlling the load power of 1 watt; a relay switch circuit is connected with a magnetic hold Self-locking relay or electromagnetic non-locking relay, the relay switch is connected in series between the controlled load and the electronic switching device, and the relay coil is connected between the power supply and the relay power-saving circuit, which is used to reduce the impact on the unipolar electronic switch when the relay is working. Current consumption, because the magnetic holding self-locking relay does not consume power after being pulled in and the electromagnetic non-locking relay consumes less current when the whole machine is working, and can maintain the reliable and stable operation of the electronic switch whole machine circuit when controlling the load power of 1 watt; , the indicator light micro-energy brightening circuit includes: a current-limiting resistor and a capacitor, connected in series between the induced voltage signal source and the anode of the LED indicator, the induced voltage signal enhances the brightness of the LED indicator through the resistor and the non-polar capacitor , in the unipolar electronic switch, when the relay switch is closed and the light is on, the LED works with high brightness to indicate the switch on state; when the relay switch K is disconnected and the light is off, the LED works with low energy consumption and low brightness as the switch position off state indication, wherein, The induction signal source in the micro energy consumption brightening circuit of the indicator light is an AC source or a DC source containing an AC component

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