CN202353535U

CN202353535U - Energy-saving self-extinguishing switch

Info

Publication number: CN202353535U
Application number: CN2011204650886U
Authority: CN
Inventors: 陈寇忠; 孙浩; 王进浩; 文振江; 张凯婷
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2011-11-14
Filing date: 2011-11-14
Publication date: 2012-07-25
Anticipated expiration: 2021-11-14

Abstract

The utility model discloses an energy-saving self-extinguishing switch suitable for house public parts and parts of other buildings, which require for transient lighting. The energy-saving self-extinguishing switch comprises a full-wave bridge type rectification circuit consisting of D1, D2, D3 and D4, an upper part of a button K, resistors R1, R2, R3 and R4, a unidirectional thyristor SCR and triodes T1 and T2. The energy-saving self-extinguishing switch has the advantages of short button pressing time, long lighting time, small capacity, low voltage resistance requirement and stable and reliable operation, and a panel display lamp determines the quality of a control circuit of the switch.

Description

Energy-conservation self-extinguishing switch

Affiliated technical field

The utility model relates to a kind of electronic time-delay switch, particularly a kind of be applicable to dwelling house public and other build the energy-conservation self-extinguishing switch that thing needs transient state illumination position.

Background technology

Existing push button electronic time-delay switch utilizes discharging and recharging of electric capacity to realize that time-delay is from putting out usually.The shortcoming of this switch is: 1, too short if button is pressed the time, then lighting time does not often reach the fixed delay time of designing institute (being generally 1-3 minute), if need button be pressed the long period (several seconds), then makes troubles to the user.2, the electrochemical capacitor capacity that adopts in the circuit is big, and requirement of withstand voltage is high, and volume is bigger, has increased manufacturing cost.3, the light-emitting diode on the panel (connecting with resistance) is connected in parallel on rectifier power source or button two ends, can not correctly reflect the quality of switch internal control circuit.

The utility model content

The purpose of the utility model provide a kind of button time short, lighting time is long, panel display lamp and the fine or not corresponding to energy-conservation self-extinguishing switch of switch internal control circuit.

The purpose of the utility model is achieved in that it comprises the full-wave bridge rectifier circuit that is made up of D1, D2, D3, D4; Be characterized in that the anode of upper end and unidirectional thyristor SCR of upper end, resistance R 3, the R4 of button K is connected to the output of rectifier bridge; The negative electrode of the emitter of triode T1, T2, unidirectional thyristor SCR links to each other with the output of rectifier bridge; Terminate to the lower end of button K on the resistance R 1; The left end of the lower end of R1 and the positive pole of capacitor C, resistance R 2 joins; The right-hand member of R2 and the base stage of T1 are joined, and the base stage of the negative pole of capacitor C and the collector electrode of T1, T2 and the lower end of R3 join, and join with the collector electrode of T2, the trigger electrode of SCR behind the lower end series connection LED of resistance R 4.The operation principle of this energy-conservation self-extinguishing switch is: after circuit was connected, its initial condition was ended for triode T1, and the T2 conducting is added in that voltage approaches zero between unidirectional thyristor SCR trigger electrode and negative electrode; So not conducting of SCR, lamp L did not work in the moment that presses the button K, and through the electric current of resistance R 1, a part makes triode T1 transfer conducting to by ending through resistance R 2; Another part charges to capacitor C through T1, because the C capacity is less, charging is rapid, and is operated in the positive feedback state; Can quicken the conducting of T1, meanwhile, triode T2 is transferred to by conducting immediately and ending; This moment, the T2 collector potential raise, and triggered unidirectional thyristor and made its conducting, and lamp L is lighted.After K broke off, the capacitor C after the charging was kept the T1 conducting through resistance R 2, T1 and R3 discharge, and T2 ends, the state of SCR conducting, the time-delay beginning, and lamp L continues to light.The length of capacitor C discharge time (delay time) is relevant with the product of resistance (R2+R3) and capacitor C.When the discharging current on the C drops to a certain degree can not keep operating state the time, T1 is transferred to by conducting and ending, and T2 is by by transferring conducting to, and SCR loses trigger current and closes, and lamp has just extinguished.

The beneficial effect of the utility model is: 1, capacitor C connects for positive feedback in circuit; Push button K can accelerate the conducting of T1, so the utmost point short time, can light lamp L; The capacity of the capacitor C that the method that connects this kind adopts is less withstand voltage lower, can satisfy 1-3 minute requirement of time-delay.2, T1, T2 play amplification, inverting function, and circuit is simple, and reliable in action is stable.3, LED is serially connected in the collector loop of T2, and its effect is indicated from the state that original single position of the switch indication expands to switch, reflects promptly whether control circuit and bulb be intact.

Description of drawings

Below in conjunction with accompanying drawing and instance, the utility model is done further to detail:

Accompanying drawing 1 is the utility model circuit diagram

Element that energy-conservation self-extinguishing switch comprises among the figure and specifications and models thereof:

Element model element type number

60 kilo-ohms of D1-D4 IN4007 R1

200 kilo-ohms of T1, T2 9013 R2

300 kilo-ohms of SCR MCR100-8 R3

4 560 kilo-ohms of LED Φ 5 red R

K common electrical bell button C uf/16v

Embodiment:

Their annexation is: D1, D2, D3, D4 constitute full-wave bridge rectifier circuit; It is characterized in that the anode of upper end and unidirectional thyristor SCR of upper end, resistance R 3, the R4 of button K is connected to the output of rectifier bridge, the emitter of triode T1, T2, the negative electrode of unidirectional thyristor SCR links to each other with the output of rectifier bridge; Terminate to the lower end of button K on the resistance R 1; The left end of the lower end of R1 and the positive pole of capacitor C, resistance R 2 joins, and the right-hand member of R2 and the base stage of T1 are joined, and the base stage of the negative pole of capacitor C and the collector electrode of T1, T2 and the lower end of R3 join; The lower end serial connection of resistance R 4 is joined with the collector electrode of T2, the trigger electrode of SCR behind the LED.

Claims

1. energy-conservation self-extinguishing switch; Comprise the full-wave bridge rectifier circuit that constitutes by D1, D2, D3, D4; It is characterized in that the anode of upper end and unidirectional thyristor SCR of upper end, resistance R 3, the R4 of button K is connected to the output of rectifier bridge; The emitter of triode T1, T2, the negative electrode of unidirectional thyristor SCR links to each other with the output of rectifier bridge, terminates to the lower end of button K on the resistance R 1; The left end of the lower end of R1 and the positive pole of capacitor C, resistance R 2 joins; The right-hand member of R2 and the base stage of T1 are joined, and the ground level of the negative pole of capacitor C and the collector electrode of T1, T2 and the lower end of R3 join, and join with the collector electrode of T2, the trigger electrode of SCR behind the lower end series connection LED of resistance R 4.