CN2461206Y - Acousto-optic controlled self-turn-off switch - Google Patents

Abstract

The utility model discloses an acoustic-optic controlled self-turn-off switch, which comprises an outer housing, a circuit board, a bridge type rectifying power supply and an NE555 integrated module, wherein, the circuit board is arranged in the outer housing, four terminals are arranged on the outer housing, and the circuit board is also provided with a resistor, a capacitor, a triode, a controlled silicon, a piezoelectric ceramic piece, a photoresistor, an NOT gate, etc. The utility model has the advantage that the turn off delay time of a switch can be automatically adjusted according to sound signals. Under the condition of darkness, so long as sound signals do not disappear, the switch can not delay to turn off. Furthermore, the utility model has the advantages of simple structure and reliable operation.

Description

Novel sound, light-operated self-extinguishing switch

The utility model relates to a kind of sound and light of utilizing and controls the novel sound of electric light opening and closing, light-operated self-extinguishing switch automatically.

At present, sound of the prior art, light-operated self-extinguishing switch is of a great variety, utilization also relatively extensively, yet these sound, the ubiquitous problem of light-operated self-extinguishing switch is: switch is once connection, the turn off delay time circuit of its switch is also just started working, after time-delay after a while, switch must turn-off, although voice signal is still arranged in this delay time, but this sound can't change the switch turn-off time, so switch will constantly repeat under the situation of sound to open and turn-off having, and this has not only influenced the useful life of electric light, but also influenced illumination, thereby existing sound, light-operated self-extinguishing switch is still not ideal enough in use.

The purpose of this utility model is: provide a kind of and can adjust the novel sound of turn off delay time time, light-operated self-extinguishing switch automatically according to voice signal, to overcome the deficiencies in the prior art.

The utility model is to constitute like this: it comprises shell (1), circuit board (2), bridge rectification power ZL, the NE555 integration module, circuit board (2) is contained in the shell (1), on shell (1), be provided with a, b, c, four terminals of d, ZL and NE555 are contained on the circuit board (2), on circuit board (2), resistance R 1～R8 is housed also, capacitor C 1～C3, triode V1 and V2, controllable silicon V3, piezoelectric ceramic piece BP, photo resistance RG, not gate T1～T4, the base stage of V1 meets R1, R2 and BP, the collector electrode of V1 meets R3,2 pin and the T1 of NE555, the emitter of V1 connect BP and R2 the other end and with 1 pin of NE555, C1, C2, C3, RG, the output negative pole of R7 and ZL is connected, the output cathode of ZL meets C3, the other end of R1 and R2 and with 8 pin of NE555, R4, R8 connects, T1, T2, R6, T3, T4 connects mutually, and T4 connects the base stage of V2, the other end of C2 is connected with T3 with R6, the collector electrode of V2 connects the other end of R8, the emitter of V2 connects the other end of R7 and 6 pin of NE555,4 pin of NE555 connect the other end of R4 and RG, 5 pin of NE555 connect the other end of C1, the 3 pin output signals of NE555 are by arriving the control utmost point of V3 behind the R5, the positive pole of V3 is connected with the first utmost point one end of the transformer of a terminals and ZL and d terminals respectively with negative pole, the transformer of ZL is the utmost point other end and b just, two terminals of c connect, and electric light D is connected a, on two terminals of b.

Owing to adopted technique scheme, the utility model is compared with existing sound, light-operated self-extinguishing switch, the utlity model has the advantage of adjusting the switch turn off delay time time according to voice signal automatically, thereby has overcome the deficiencies in the prior art.The utility model also has advantage simple in structure, reliable operation in addition.Operation principle of the present utility model is: when daytime is bright, it when photo resistance RG is subjected to illumination low resistive state, NE555 is output as low level, not conducting of V3, and lamp does not work, when at dark, photo resistance RG is a high-impedance state, but at this moment reset signal is invalid, if there is voice signal to transmit, piezoelectric ceramic piece BP gets, the V1 conducting, 2 pin of NE555 obtain a negative pulse, and this negative pulse is anti-phase through T1 to be high level, make by T2, R6, C2, the integrator delay-time circuit that T3 forms is not worked, not conducting of V2,6 pin of NE555 obtain a negative pulse, the 3 pin output high level of NE555, the V3 conducting, electric light D is bright; If after this voice signal disappears, BP does not have, V1 ends, and 2 pin of NE555 obtain a high level, and this high level is anti-phase through T1 to be low level, this low level is started working integrator delay-time circuit, if there is voice signal to transmit therebetween again, this moment BP once more electric, V1 is conducting again, 2 pin of the NE555 negative pulse of getting back, simultaneously this negative pulse is anti-phase through T1 is high level, and it makes integrator delay-time circuit deactivate immediately again, makes C2 both end voltage moment reduce to low level, V2 still ends, V3 is conducting still, and after this if the multiple above process of voice signal counterpoise is arranged again, integrator delay-time circuit was started working after to the last a voice signal transmitted, through behind the delay time that sets, the V2 conducting, 6 pin of NE555 obtain high level, and NE555 gets back to stable state, V3 ends, and electric light D extinguishes.The parameter of regulating R6 and C2 can change the delay time of setting.The utility model is under the situation of darkness, as long as voice signal do not disappear, its switch just can time delayed turn-off, thereby has avoided sound of the prior art, light-operated self-extinguishing switch that the shortcoming of the frequent opening and closing of switch is being arranged under the situation of voice signal.

Accompanying drawing 1 is a schematic appearance of the present utility model;

Accompanying drawing 2 is a circuit theory schematic diagram of the present utility model.

Embodiment of the present utility model: shell (1) preferably adopts insulating sheet material to make, bridge rectification power ZL can adopt and can export the galvanic power supply of 10V, the NE555 integration module is the finished product of selling on the market, circuit board (2) is contained in the shell (1), on shell (1), a is set, b, c, four terminals of d, ZL and NE555 are contained on the circuit board (2), on circuit board (2), refill resistance R1～R8, capacitor C 1～C3, triode V1 and V2, controllable silicon V3, piezoelectric ceramic piece BP, photo resistance RG, not gate T1～T4, the base stage of V1 is met R1, R2 and BP, the collector electrode of V1 meets R3,2 pin and the T1 of NE555, the emitter of V1 connect BP and R2 the other end and with 1 pin of NE555, C1, C2, C3, RG, the output negative pole of R7 and ZL is connected, the output cathode of ZL is met C3, the other end of R1 and R2 and with 8 pin of NE555, R4, R8 connects, with T1, T2, R6, T3, T4 connects mutually, and T4 is connect the base stage of V2, the other end of C2 is connected with T3 with R6, the collector electrode of V2 connects the other end of R8, the emitter of V2 connects the other end of R7 and 6 pin of NE555,4 pin of NE555 connect the other end of R4 and RG, 5 pin of NE555 connect the other end of C1, the 3 pin output signals of NE555 are by arriving the control utmost point of V3 behind the R5, the positive pole of V3 is connected with the first utmost point one end of the transformer of a terminals and ZL and d terminals respectively with negative pole, with the first utmost point other end of the transformer of ZL and b, two terminals of c connect, and D is connected a with electric light, on two terminals of b.

Claims (1)

1, a kind of novel sound, light-operated self-extinguishing switch, it comprises shell (1), circuit board (2), bridge rectification power ZL, the NE555 integration module, circuit board (2) is contained in the shell (1), on shell (1), be provided with a, b, c, four terminals of d, ZL and NE555 are contained on the circuit board (2), it is characterized in that: on circuit board (2), resistance R 1～R8 is housed also, capacitor C 1～C3, triode V1 and V2, controllable silicon V3, piezoelectric ceramic piece BP, photo resistance RG, not gate T1～T4, the base stage of V1 meets R1, R2 and BP, the collector electrode of V1 meets R3,2 pin and the T1 of NE555, the emitter of V1 connect BP and R2 the other end and with 1 pin of NE555, C1, C2, C3, RG, the output negative pole of R7 and ZL is connected, the output cathode of ZL meets C3, the other end of R1 and R2 and with 8 pin of NE555, R4, R8 connects, T1, T2, R6, T3, T4 connects mutually, and T4 connects the base stage of V2, the other end of C2 is connected with T3 with R6, the collector electrode of V2 connects the other end of R8, the emitter of V2 connects the other end of R7 and 6 pin of NE555,4 pin of NE555 connect the other end of R4 and RG, 5 pin of NE555 connect the other end of C1, the 3 pin output signals of NE555 are by arriving the control utmost point of V3 behind the R5, the positive pole of V3 is connected with the first utmost point one end of the transformer of a terminals and ZL and d terminals respectively with negative pole, the transformer of ZL is the utmost point other end and b just, two terminals of c connect, and electric light D is connected a, on two terminals of b.