CN2201758Y

CN2201758Y - Touching electronic switch

Info

Publication number: CN2201758Y
Application number: CN 94205662
Authority: CN
Inventors: 刘义雄
Original assignee: Individual
Current assignee: Liu Yixiong
Priority date: 1994-03-30
Filing date: 1994-03-30
Publication date: 1995-06-21
Anticipated expiration: 2004-03-30

Abstract

The utility model relates to a touching electronic switch, comprising a touching circuit, an electronic switching circuit, a position indicating circuit, and a rectification voltage stabilizing circuit. The input end of the touching circuit is connected with a touching sheet, the output end of the touching circuit is connected with the control end of the electronic switching circuit, and the switching elements in the electronic switching circuit are connected at the DC end of the rectification circuit through voltage stabilizing elements in the rectification voltage stabilizing circuit. The utility model adopts the electronic switching elements having no contact, no heat can be generated when a power supply is switched on or switched off, no electric spark can be produced, and the touching electronic switch has high safety. The touching sheet is a good metal conductor, and human body induction signals are transmitted to the circuit through lightly touching the touching sheet in use. The utility model has the advantage of convenient operation.

Description

Touching electronic switch

Touching electronic switch belongs to electronic technology field.

Existing power supply universal switch is made with the mechanics principle design.Mainly be divided into stay-supported and dial type two major types.This its major defect of two major types mains switch is that manufacturing process is loaded down with trivial details, and the conductiving metal part consumed power is bigger, easily produces electric spark when power supply opens or closes, and the ignition and blasting hazards lie dormant.Again usually because of useful life of its product of conductiving metal part quality of materials problems affect.

The purpose of this utility model will provide a kind of manufacturing simple to people exactly, saves electric energy, long product lifecycle and do not produce the safety-type touching electronic switch of electric spark when opening or closing.

For achieving the above object, the utility model comprises touch circuit, electronic switching circuit, position indicating circuit and regulator rectifier circuit, and input and a touch sheet of touching circuit join, and the control end of its output and electronic switching circuit joins; Switch element in the electronic switching circuit is connected on the dc terminal of rectification circuit by the voltage stabilizing element in the regulator rectifier circuit; Position indicating circuit is connected on the dc terminal of rectification circuit.

The utility model adopts non-contact structure, so can not generate heat when source current is switched on or disconnect, also can not produce electric spark, and is safe and reliable, prolonged the useful life of product.Touching sheet is good metallic conductor, only need touch gently during use and the human-induced signal can be passed to circuit, uses easily.

Fig. 1 is a front view of the present utility model;

Fig. 2 is an end view of the present utility model;

Fig. 3 is a circuit diagram of the present utility model.

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

Touching circuit is CD4017 by a transistor BG2, counter IC(model), resistance R 2-R4, capacitor C 2 form, the clock end of the emitter of triode BG2 and counter IC i.e. 14 pin is joined, the output Q2 of counter IC is that 4 pin and reset terminal 15 pin join, so that during Q2 output high level, counter reset output Q1 output low level, the output Q1 of counter IC i.e. 2 pin joins by the control end of resistance R 2 with electronic switch.When the human body contact once touched sheet 3, the current potential of the emitter of triode BG2 took place once to change, and made the state of output 2 pin take place once to change, and so just made the level circulation of counter IC2 pin do high and low variation (promptly 0.1 changes).

Electronic switching circuit is made up of transistor BG1, a controllable silicon SCR, and controllable silicon SCR is as switch element, and the base stage of triode BG1 is as the control end of electronic switching circuit, and the collector electrode of BG1 connects the control utmost point of controllable silicon SCR.Controllable silicon SCR is connected on the dc terminal of rectification circuit by the diode D5-D10 of 6 serial connections.When 2 pin of counter IC are exported high level, triode BG1 conducting; Triode BG1 ends during output low level.During the BG1 conducting, apply an electronegative potential for the control utmost point of controllable silicon SCR, the controllable silicon SCR conducting that negative sense triggers makes the touching electronic switch closure.When BG1 ended, the control utmost point of controllable silicon SCR did not add trigger voltage, and controllable silicon SCR is ended, and touching electronic switch is disconnected.Position indicating circuit is made up of LED and resistance R 5, and LED is connected on the dc terminal of rectification circuit by resistance R 5, when the controllable silicon conducting by diode D5-D10 short circuit position indicating circuit, LED extinguishes.

The bridge circuit that regulator rectifier circuit is made of diode D1-D4 and form by the voltage stabilizing circuit that resistance R 1, capacitor C 1, diode D5-D10 constitute.6 diode D5-D10 have constituted the voltage stabilizing element of regulator rectifier circuit, and about 4.2 volts, the interchange end and the binding post 5 of rectification circuit join dc voltage stability.

Resistance R 3 capacitor C 2 constitute anti-jamming circuit in Fig. 3.

Controllable silicon described in the utility model can be an one-way SCR, also can be bidirectional triode thyristor.

The course of work of the present utility model is: when human body touch touches sheet, the emitter current potential of triode BG2 changes, the 2 pin potential change of counter IC, if 2 pin output this moment high level, the BG1 conducting, the controllable silicon SCR conducting, switch connection, touch and once touch sheet, the 2 pin output low levels of counter IC this moment, controllable silicon ends, and switch disconnects.

Binding post 5 of the present utility model is serially connected in the electric power loop of electric equipment such as bulb D, utilizes the silicon controlled conducting and by the Kai Heguan of control apparatus equipment.

Fig. 1, Fig. 2 show external structure of the present utility model, and in the drawings, 1 is panel, and 2 is ic chip, and 3 for touching sheet, and 4 is position indicator, and 5 is binding post.Wherein touch sheet 3, position indicator 4 is located on the outer surface of panel 1.

Claims

1, a kind of touching electronic switch is characterized in that: comprise touching circuit, electronic switching circuit, position indicating circuit and regulator rectifier circuit; Input and a touch sheet of touching circuit join, and the control end of its output and electronic switching circuit joins; Switch element in the electronic switching circuit is connected on the dc terminal of rectification circuit by the voltage stabilizing element in the regulator rectifier circuit.

2, touching electronic switch according to claim 1, it is characterized in that: touch circuit and form by a transistor BG2, counter IC, resistance R 2-R4, capacitor C 2, the clock end of the emitter of triode BG2 and counter IC is joined, and the output Q1 of counter IC joins by the control end of a resistance R 2 with electronic switch.