CN2130292Y

CN2130292Y - Lamp cap switched by claping one's hands

Info

Publication number: CN2130292Y
Application number: CN 92225981
Authority: CN
Inventors: 张恩会
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-30
Filing date: 1992-06-30
Publication date: 1993-04-21
Anticipated expiration: 2002-06-30

Abstract

The utility model relates to a lamp cap with a built-in acoustic control switch, which is composed of a lamp holder, a lamp socket and an all-transistor acoustic control circuit installed between the lamp holder and the lamp socket. The acoustic control circuit comprises four parts, such as a reduction voltage rectifier filter, a microphone amplifier, a trigger pulse generator and a contactless switch, and the micro phone amplifier, the trigger pulse generator and the contactless switch are connected in sequence. The microphone amplifier is connected in the monotube negative feedback mode, and the base of the microphone amplifier is connected with a high pass capacitor. The other end of the high pass capacitor is connected with an adjustable resistor and a microphone, which are connected in series with the two ends of a direct-current power supply. The triggering pulse generated by a bistable circuit controls the contactless switch connected in series with a load. The utility model has the advantages of simple circuit, low power consumption, low cost and strong practicality, and is particularly suitable for the civil light fitting field.

Description

Lamp cap switched by claping one's hands

The utility model relates to a kind of lamp holder of interior dress audio-switch, and it belongs to field of illuminating lamps.

Chinese patent CN2050661U " a kind of incandescent lamp holder with audio-switch " has proposed with sound incandescent lamp to be carried out the design of opening and closing, it amplifies by voice signal being carried out the frequency-selecting secondary, send into the direct current amplifier integrated block again, then amplify through one-level again and remove to trigger controllable silicon, make the acoustic control of the method realization of its conducting or shutoff to incandescent lamp, but because its circuit is complicated and need the employing integrated circuit, so cost is higher, has influenced its practicality to a great extent.

It is simple that the purpose of this utility model provides a kind of circuit, draws materials conveniently, cheaply the acoustic control lamp holder.

The utility model is realized above-mentioned purpose by the following method: a kind of switch socket of clapping hands is by socket, lamp socket, shell between socket and the lamp socket and the all-transistor sound control circuit in the shell are formed, sound control circuit is divided into step-down rectifier filtering and amplifies with the microphone that is connected successively, trigger impulse produces, four parts of noncontacting switch, the microphone amplification is connected into the single tube negative feedback, connect high pass electric capacity in its base stage, the other end of high pass electric capacity respectively with connect after be connected on the DC power supply two ends adjustable resistance and microphone join, the output that microphone amplifies connects the input of bistable circuit, controls the noncontacting switch of connecting with load with the trigger impulse that bistable circuit produces.

The operation principle of sound control circuit is as follows: the sound of clapping hands picked up by the microphone amplifier section → change → load of bistable electro line state change → noncontacting switch state by the electric dead electricity or opposite that turn to.

Describe in detail below by accompanying drawing

Fig. 1 is the utility model outside drawing;

Fig. 2 is a sound control circuit block diagram in the utility model;

Fig. 3 is a sound control circuit schematic diagram in the utility model.

The switch socket of clapping hands shown in Figure 1 is made up of socket 1, lamp socket 2, shell 3 between socket 1 and lamp socket 2 and the sound control circuit in the shell 3, and shell 3 and socket, lamp socket screw attachment have pickup hole 4 and louvre 5 on the shell.

Noncontacting switch 9 four parts that sound control circuit shown in Figure 2 is divided into that step-down rectifier filtering 6 and the microphone that is connected successively amplify 7, trigger impulse produces 8, connect with load.

As can be seen from Figure 3, comprise decompression capacitor 14, rectifier diode 15 and filter capacitor 16 in the step-down rectifier filtering 6, also be connected to the voltage stabilizing link that is composed in series by five diode forward between decompression capacitor 14 rear ends and ground, civil power is filtered into the direct voltage that sound control circuit provides 2.5-3V through halfwave rectifier again after the decompression capacitor step-down; It is single tube voltage negative-feedback circuits in parallel that microphone amplifies 7, be attempted by the DC power supply two ends after adjustable resistance 12 and microphone 13 series connection, be connected in series a high pass electric capacity 11 between the base stage of the junction of adjustable resistance 12 and microphone 13 and transistor 10, its capacity is got 1800-2200pf and is passed through with the clapping signal of tolerance frequency about 4.5KHZ, 4-8.2K 12 outputs that are used for regulating microphone 13 of the adjustable resistance of Ω, make that it is output as maximum picking up when clapping hands signal, because general high-frequency sound is little than the intensity of clapping, therefore by high pass electric capacity 11, adjustable resistance 12, microphone 13 threes' careful cooperation, can from multiple sound, select the signal of clapping hands that reaches certain sound intensity, the current amplification factor of transistor 10 requires greater than 250, the resistance of collector resistance 17 and feedback resistance 18 is got respectively about 10K Ω and 1M Ω, the sensitivity of microphone amplification 7 be can improve like this, standby current and operating current reduced; The bootstrap bistable circuit that trigger impulse generation 8 is made up of transistor, its input signal is drawn from the collector electrode of transistor 10; Noncontacting switch 9 is bidirectional triode thyristors of connecting with load, and its trigger impulse is provided by the output of bistable circuit.

Transistor 10 places end or little logical state during holding state, and this moment, the bistable electro line state was constant, so bidirectional triode thyristor keeps original conducting or off state; When clapping hands in distance lamp holder number meter scope, this sound is picked up by microphone 13 and makes transistor 10 saturation conductions, and the negative pulse that its collector electrode is sent makes the bistable circuit state turnover, and then makes the controllable silicon state become shutoff or opposite by conducting.Terminals 0 connect the public zero curve in socket 1, sound control circuit and the lamp socket 2 among the figure, and terminals a, b, c connect their live wire respectively.

The utility model is because inexpensive discrete component of easily purchasing of employing and circuit are simple, therefore cost is low practical, produced product according to the utility model, after tested, the standby current of its sound control circuit only can adapt to the 1.2-5 volt for microampere order, operating current less than 2 milliamperes, operating voltage, thousands of tests show that this product enters the practical stage.

Claims

1, a kind of switch socket of clapping hands is made up of shell 3 between socket 1, lamp socket 2, socket and the lamp socket and the sound control circuit in the shell 3, sound control circuit is divided into step-down rectifier filtering 6 and produces 8 with the microphone amplification 7, the trigger impulse that are connected successively, noncontacting switch 9 four partly, it is characterized in that: the base stage that microphone amplifies transistor 10 in 7 is connected to high pass electric capacity 11, the other end of high pass electric capacity respectively with connect after be connected on the DC power supply two ends adjustable resistance 12 and microphone 13 join; Trigger impulse produces 8 and is made of the discrete component bistable circuit; Pickup hole 4 is arranged on the shell 3.

2, the switch socket of clapping hands according to claim 1, the capacity that it is characterized in that said high pass electric capacity 11 is 1800-2200pf.

3, the switch socket of clapping hands according to claim 1 is characterized in that on the said shell 3 louvre 5 being arranged.