CN2445513Y

CN2445513Y - Single-wire control AC. electronic switching module

Info

Publication number: CN2445513Y
Application number: CN 00261221
Authority: CN
Inventors: 闵运渭
Original assignee: He Chaokun; Xie Hanji; Yang Yaozhong
Current assignee: He Chaokun; Xie Hanji; Yang Yaozhong
Priority date: 2000-11-01
Filing date: 2000-11-01
Publication date: 2001-08-29
Anticipated expiration: 2010-11-01

Abstract

The utility model relates to a single-wire control AC electronic switching module, which is composed of a shell, a bidirectional thyristor, and a control circuit, wherein both ends of the bidirectional thyristor are connected with a binding post, and the control circuit is composed of a silicon rectificate bridge, a unilateral thyristor, a button, a plurality of resistor capacitor units, etc. A diode and a resistance series arm are arranged between the common port (B point) of a divider resistance and a binding post, and a unilateral silicon control pole can be provided with negative voltage used for turn-off through the button. The utility model has the advantages of simple structure of a circuit of the utility model, reliable performance, low dynamic voltage, small quiescent current, low cost, small size and strong versatility. The switch module is especially suitable for making a wall type AC switch, for controlling various lighting fittings and household electric appliances, etc.

Description

Single line control electronic AC switch module

The utility model is established and is related to electronic AC switch, particularly a kind of low pressure drop of single line control mode, high-power, electronic AC switch module.

Present alternating current large-power (more than the 200w) solid-state switch generally should not be used in single line control aspect, for example is installed on the wall type alternating-current switch of wall.Because its " operating part " and " control section " separately powers often, usually control section needs the above operating voltage of 2V and certain operating current, if with two parts put together unified power supply when being difficult to accomplish conducting the pressure drop of switch ends be lower than 1.5V, can't realize the shutoff of switch.

Dynamic pressure drop during the general conducting of the electronic AC switch of single line control mode at present is about 2.5-10Vac, and the quiescent current during disconnection is generally more than 3mA.The power of being controlled generally is no more than 200W, and circuit is complicated, and cost is higher.

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and the electronic AC switch module that provide a kind of dynamic pressure drop of single line control mode low, quiescent current is little, power controlling is bigger is to satisfy the market demand of wall type electronic AC switch etc.

Single line control electronic AC switch module of the present utility model comprises housing, and two ends are connected in the bidirectional triode thyristor of binding post, and the control circuit of control bidirectional triode thyristor conducting/shutoff; Described control circuit contains: exchange the silicon rectification bridge that end is connected in binding post J1, be connected resistance R 1 between the control utmost point of bidirectional triode thyristor and the second plate; Be parallel to the one-way SCR of silicon rectification bridge dc output end, parallel resistance R6 and capacitor C 3 between one-way SCR control end and the negative electrode are connected resistance R 4, R5 series arm, resistance R 5 two ends shunt capacitance C2 between one-way SCR anode and the negative electrode; It is characterized in that:

Another of silicon rectification bridge exchanges isolation resistance R2 between the control utmost point of end and bidirectional triode thyristor, is connected capacitor C 1 between the common port of silicon rectification bridge and resistance R 2 and the binding post J2;

Be connected button AN1 between the common port of described resistance R 4, R5 (B point) and the one-way SCR control end, be connected the series arm of diode D and resistance R 3 between described B point and the binding post J2, be used to provide the negative voltage that one-way SCR is turn-offed.

Below in conjunction with the embodiment accompanying drawing the utility model is further specified.

Fig. 1 is circuit theory diagrams of the present utility model;

Fig. 2 is a structural representation of the present utility model.

As shown in Figure 1, this electronic AC switch mainly comprises: two ends are connected in the bidirectional triode thyristor of binding post SCR1 is made up of silicon rectification bridge, unidirectional controllable silicon S CR2, button AN1 and some Resistor-Capacitor Units etc. Control circuit. The first anode of two-way silicon SCR1 and second plate respectively with binding post J1, the J2 of switch Join control utmost point connecting resistance R1 and R2, the interchange one termination binding post J1 of silicon rectification bridge, another termination R2 And C1, R1 stablizes the duty of two-way silicon SCR1 and the effect of setting up the operating point among the figure. R2 rise every From the effect of C1, make C1 directly divide alternating voltage from wiring styletable obtaining section. The negative terminal of diode D and Binding post J2 links to each other, the anode output negative voltage of diode D, and the resistance R 3 of its series connection can be controlled negative electricity Press the time of setting up. R4, R5 are divider resistance, are that the common port (B point) of two resistance provides 6-10 The positive voltage of volt, described B point is generating positive and negative voltage superposition place, when two-way silicon SCR1 shutoff, the B point is for just Voltage, when two-way silicon SCR1 conducting, the B point is negative voltage. Capacitor C 2 is filtering storage capacitor, electricity Hold C3 and resistance R 6 and be attempted by between the control utmost point and negative electrode of unidirectional silicon SCR2, play and stablize unidirectional silicon worker Do the effect of state, touch key AN1 provides positive trigger voltage and negative for the control utmost point of unidirectional silicon SCR2 Blanking voltage.

When switch turn-offed, described B point voltage provided the condition of triggering and conducting for just for unidirectional silicon. The unidirectional silicon conducting that pushes button, two-way silicon be simultaneously conducting also. When switch is in conducting state, B point electricity Pressure becomes negative voltage by the time in 1 second approximately, and the trigger voltage of cut-off is provided for unidirectional silicon. Click The unidirectional silicon cut-off of button, two-way silicon is simultaneously cut-off also. The conducting of unidirectional silicon or cut-off are by button AN1 (also available other signal is controlled) of realizing.

Main feature of the present utility model is: 1, diode D and resistance R 3 form the negative pressure feeding circuit, just Voltage is in the same place with the negative voltage superposition, and when bidirectional triode thyristor turn-offed, the voltage that described B is ordered is for just, and was two-way The B point voltage is for negative during controlled silicon conducting, and the period of change of generating positive and negative voltage is basically by the number of R3, R4, C2 Value decides. 2, capacitor C 1 and resistance R 1, R2 provide the work electricity of the necessity after the conducting for unidirectional silicon Press. The effect meeting of (as more than 300 watts) C1 and R2 is bigger when high-power especially.

Fig. 2 is an example structure schematic diagram of its module.Wherein 1 is module housing, and 2 is that binding post J1,3 is binding post J2, and 4 is the trip bolt of binding post.Circuit part shown in Figure 1 can adopt paster technique that each chip components and parts is assembled in the miniature printed board, place then in the shell 1, the pouring encapsulant incorporate switch module.Switch module can be used for making common wall type single line control electronic AC switch, and mounting means is identical with common wall type mechanical switch, can replace traditional mechanical type switch on wall etc., highly versatile.

The utility model electronic switch is provided with D in control circuit and R3 is composed in series the negative pressure circuit, the variation of generating positive and negative voltage can appear with the difference of operating state in the voltage of button AN1 one end, for the turn-on and turn-off of ac thyristor provide reliable control voltage, realized the purpose of single line control.Owing to do not adopt bistable circuit, need not behind circuit turn-on provides operating current to control circuit, so dynamic pressure drop can accomplish very low (0.8-1.2 volt), and owing to the effect of C1 and R2, the power controlling of this circuit can improve relatively, can accomplish 500 watts.If this circuit need not touch button AN1, also available other signal comes the conducting of control circuit and ends.

This single line control electronic AC switch modular circuit is simple in structure, dependable performance, and cost is low, and volume is little, highly versatile.Switch module is specially adapted to make the wall type alternating-current switch, is used for the control of various light fixtures, household electrical appliance etc.This switch module also can be used for the single line control of various industrial equipments.

Claims

1, a kind of single line control electronic AC switch module comprises housing, and two ends are connected in the bidirectional triode thyristor of binding post, and control circuit; Described control circuit contains: be connected in the silicon rectification bridge of binding post, be parallel to the one-way SCR of silicon rectification bridge output, be connected resistance R 4, R5 series arm, resistance R 5 two ends shunt capacitance C2 between one-way SCR anode and the negative electrode; It is characterized in that:

The common port of described resistance R 4, R5 is the B point, and is connected button between the one-way SCR control end, is connected the series arm of diode D and resistance R 3 between described B point and the binding post J2, is used to provide the negative voltage that one-way SCR is turn-offed.