CN2177301Y

CN2177301Y - Long life delay switch

Info

Publication number: CN2177301Y
Application number: CN 93243686
Authority: CN
Inventors: 赵明鉴; 赵振荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-05
Filing date: 1993-11-05
Publication date: 1994-09-14
Anticipated expiration: 2003-11-05

Abstract

The utility model relates to a long life delay switch (comprising a touching mould type, a button type, and a sound control type). A delay circuit is only composed of a thyristor, a diode, a resistor, a capacitance, etc. The utility model has the advantages that the elements of the delay circuit are under working state only during the short time when a filament lamp illuminates. Thus, the delay switch of the utility model has long service life, and the delay circuit is provided with two RC circuits to charge and discharge to control time. Thus, the delay time of the delay switch of the utility model is relatively stable.

Description

Long life delay switch

The utility model relates to a kind of electronic switch, particularly a kind of long-life delay switch.

For electrical energy saving prolongs bulb life, in the corridor, stair place dress delay switch, but spoilage is very high, and this must influence popularizing of delay switch.We have investigated present delay switch, find that its flimsy main cause is: behind the delay switch place in circuit, when incandescent lamp does not work, always there is a triode to be in conducting work shape at least, or minimumly always has an electrolytic capacitor to be in the charging operating state.The quality of its used triode and electrolytic capacitor is difficult to guarantee work throughout the year and does not damage.Owing to be used for the delay switch at corridor, stair place at present, circuit is generally simpler, so its delay time is generally also very unstable again.

The purpose of this utility model provides a kind of long-life delay switch, overcomes above-mentioned shortcoming and defect.

The purpose of this utility model is achieved in that a kind of long-life delay switch, is made up of panel, bonnet and wiring board therebetween.It is characterized in that: only form in the delay circuit by elements such as controllable silicon, capacitor, resistance, diodes.

Circuit is characterised in that: capacitor C 1 in parallel before bridge rectifier, its two ends are the two-end-point of delay switch circuit.Have two to have the silicon controlled branch road behind the bridge rectifier: one, controllable silicon SCR 1 through and diode D5, the parallel circuits series connection back ground connection of resistance R 1, its two, controllable silicon SCR 2 through with ground connection after capacitor C 3 is connected.The negative electrode K of the control utmost point G of controllable silicon SCR 1 and controllable silicon SCR 2 has diode in series D7 between two branch roads, resistance R 2, and R3 connects; R2 connects capacitor C 2 one ends, the other end ground connection of capacitor C 2 between the R3; R3 wherein, C3 and R2, C2 constitutes the two poles of the earth charge-discharge circuit.

Two controllable silicon SCR1, the negative electrode K of SCR2 and control utmost point G are connected to a diode D6, D8 respectively.

By resistance R 5, the control utmost point G of diode D9 and SCR2 links for touch type touch sheet metal P;

For button-type, between button K and anode A that is parallel to SCR2 after a resistance R 6 is connected and the control utmost point G;

For sound control type, microphone MIC(piezo-electric type) with the G utmost point and the K utmost point that are parallel to SCR2 after diode D9 connects.

Its main operation principle is: when the human hand touches sheet metal or touch the button or sound (for a kind of type or only use a kind of) makes controllable silicon SCR 2 conductings.Instantaneous in the SCR2 conducting, to C3, C2 charges until controlled SCR1 conducting, and incandescent lamp is bright.Because C2 after the C3 charging, needs through resistance R 2, the R3 discharge is so can keep one section delay time of controllable silicon SCR 1 conducting, the bright one section delay time of incandescent lamp.The effect of capacitor C1 is to reduce influencing each other of delay circuit and power supply networking.

The utility model has the advantages that:

Because when incandescent lamp did not work, the element in the delay circuit was in the wait state off position, these elements are just in running order in a period of time when having only incandescent lamp bright.Be the operating time of delay switch the service time of the element in the circuit like this, and element prolongs useful life, and therefore, this delay switch has long-life advantage.Because with the two poles of the earth RC circuit, though still use general element, improved the stability of delay time, continuous several times is lighted incandescent lamp, keeps delay time constant substantially.

Fig. 1 is the utility model long-life delay switch touch type circuit diagram.

Fig. 2 is the utility model long-life delay switch button-type partial circuit figure.

Fig. 3 is the utility model long-life delay switch sound control type partial circuit figure.

Fig. 4 is the external form figure of the utility model long-life delay switch.

Fig. 5 is the use winding diagram of the utility model long-life delay switch.

Its circuit is as shown in the figure: wherein (a) is the touch type, (b) is button-type, (c) is sound control type.

Claims

1, a kind of long-life delay switch, form by panel, bonnet and wiring board therebetween, it is characterized in that: only form in the delay circuit by elements such as controllable silicon, capacitor, resistance, diodes, circuit is characterised in that: capacitor C 1 in parallel before the two ends of bridge rectifier, and its two ends are the two-end-point of delay switch circuit; There are two to have the silicon controlled branch road behind the bridge rectifier: one, controllable silicon SCR 1 warp and diode D5, the parallel circuits series connection back ground connection of resistance R 1; Its two, controllable silicon SCR 2 through with ground connection after capacitor C 3 is connected; The negative electrode K of the control utmost point G of controllable silicon SCR 1 and controllable silicon SCR 2 has diode in series D7 between two branch roads, resistance R 2, and R3 connects; R2 connects capacitor C 2 one ends, the other end ground connection of capacitor C 2 between the R3; R3 wherein, C3 and R2, C2 constitutes the two poles of the earth charge-discharge circuit, and touch sheet metal P is by resistance R 5, and the control utmost point G of diode D9 and controllable silicon SCR 2 links.

2, long-life delay switch according to claim 1 is characterized in that: two controllable silicon SCR1, the negative electrode K of SCR2 and control utmost point G are connected to a diode D6, D8 respectively.

3, long-life delay switch according to claim 1 and 2 is characterized in that: button K is parallel between the anode A and control utmost point G of controllable silicon SCR 2 with after a resistance R 6 is connected, and replaces touch sheet metal P, resistance R 5, diode D9.

4, long-life delay switch according to claim 1 and 2 is characterized in that: microphone MIC(piezo-electric type) with after diode D9 connects, be parallel between the control utmost point G and negative electrode K of controllable silicon SCR 2, replace touch sheet metal P, resistance R 5, diode D9.