CN208691539U - A kind of acoustic control trigger circuit of broadcasting equipment - Google Patents

Abstract

The utility model relates to playback equipment fields, a kind of acoustic control trigger circuit of broadcasting equipment is provided, including integrated chip, resistance R1, rheostat R2, resistance R3, relay K, reset switch S1, diode D, unidirectional controllable silicon S CR, microphone MIC and capacitor C1, power supply VCC, which comes out, connects reset switch S1, reset switch S1, which comes out, is divided into three road first via connection unidirectional controllable silicon S CR anode, unidirectional controllable silicon S CR cathode, which comes out to connect relay K power end and then come out from another power end of relay K, meets GND, the integrated chip is SK-6 model, reset switch S1 comes out the 6th pin of the second tunnel connection integrated chip SK-6, reset switch S1 comes out third road connection resistance R1.Mainly solve the problems, such as that broadcasting equipment can not broadcasting equipment be opened in acoustic control, announcer's sound sleep ring of alarm clock fails to wake up announcer and miss and play broadcast time.

Description

A kind of acoustic control trigger circuit of broadcasting equipment

Technical field

The utility model relates to playback equipment field, in particular to the acoustic control trigger circuit of a kind of broadcasting equipment.

Background technique

When announcer opens bed label broadcast with noon in the morning in life, oneself first typically is waken up with alarm clock, then Manually opened broadcast again, but fortuitous event inevitably occurs in this way, for example, announcer's sound sleep alarm clock sound fail to wake up in time, Announcer's outgoing time that broadcasting broadcast can not inevitably be missed in the problem of studio, and automatic broadcasting equipment in the prior art Control circuit generally use timer connection computer control, the circuit complexity of this mode, maintenance difficult, it is expensive, Need the problem of being used cooperatively with computer.

Utility model content

Middle problem encountered in view of the above technology, the utility model proposes a kind of acoustic control trigger circuit of broadcasting equipment, it Have the advantages that structure is simple, stability is good, it is easy to operate, cheap, can by acoustic control open broadcast.

The utility model proposes following technical scheme, a kind of acoustic control trigger circuit of broadcasting equipment, packets in order to solve the above problem Include integrated chip, resistance R1, rheostat R2, resistance R3, relay K, reset switch S1, diode D, unidirectional controllable silicon S CR, words Cylinder MIC and capacitor C1, power supply VCC, which comes out, connects reset switch S1, and it is unidirectional that reset switch S1 is divided into the connection of the three road first via out Controllable silicon SCR anode, unidirectional controllable silicon S CR cathode come out the power end for connecting relay K then from another power supply of relay K It brings out to meet GND, the integrated chip is SK-6 model, and reset switch S1 comes out the 6th of the second tunnel connection integrated chip SK-6 Pin, reset switch S1 come out third road connection resistance R1, and resistance R1 comes out the one end for being divided into two-way first via connection capacitor C1 Then the 1st pin for connecting integrated chip SK-6 is come out from the other end of capacitor C1, resistance R1 comes out the second tunnel connection microphone MIC Anode then from the cathode of microphone MIC come out meet GND, the both ends of the rheostat R2 connect the 2nd of integrated chip SK-6 respectively Pin and the 3rd pin, the 7th pin of the integrated chip SK-6, which comes out, meets GND, and the 8th pin of the integrated chip SK-6 goes out Connecing the anode for being sequentially connected resistance R3 and diode D, the cathode of diode D comes out the triggering end for connecting unidirectional controllable silicon S CR, The power end of the broadcasting equipment connects 220V power supply by the normally opened contact of relay K to control the opening and closing of broadcasting equipment.

By using above-mentioned technical proposal, the beneficial effects of the utility model are: can receive sound by being equipped with microphone MIC Electric signal is converted to, the level of the 1st pin of integrated chip SK-6 input terminal is controlled by the characteristic of capacitor C1 " separated by direct communication " Input, by " level overturning " function of integrated chip SK-6 make integrated chip SK-6 the 8th pin output high level and For triggering unidirectional controllable silicon S CR conducting, after unidirectional controllable silicon S CR conducting latching relay K obtain electric normally opened contact be closed so that Power supply connection may be implemented broadcasting equipment and automatically turn on broadcasting, and integrated circuit is simple, easy to maintenance, and component used is conventional Component makes overall cost low.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model.

Specific embodiment

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

Referring now to figure 1, the acoustic control trigger circuit of preferred the utility model embodiment broadcasting equipment, including integrated chip, electricity Hinder R1, rheostat R2, resistance R3, relay K, reset switch S1, diode D, unidirectional controllable silicon S CR, microphone MIC and capacitor C1, power supply VCC, which come out, connects reset switch S1, and reset switch S1, which comes out, is being divided into three road first via connection unidirectional controllable silicon S CR just Pole, unidirectional controllable silicon S CR cathode come out the power end for connecting relay K and then come out from another power end of relay K and connect GND, the integrated chip are SK-6 model, and reset switch S1 comes out the 6th pin of the second tunnel connection integrated chip SK-6, resets Switch S1 comes out third road connection resistance R1, and resistance R1 comes out the one end for being divided into two-way first via connection capacitor C1 then from capacitor The other end of C1 comes out the 1st pin for connecting integrated chip SK-6, then resistance R1 comes out the anode of the second tunnel connection microphone MIC It is come out from the cathode of microphone MIC and meets GND, the 2nd pin and the 3rd that the both ends of the rheostat R2 meet integrated chip SK-6 respectively draws Foot, the 7th pin of the integrated chip SK-6, which comes out, meets GND, and the 8th pin of the integrated chip SK-6, which comes out to connect, to be sequentially connected The anode of resistance R3 and diode D, the cathode of diode D come out the triggering end for connecting unidirectional controllable silicon S CR, the broadcasting equipment Power end connects 220V power supply by the normally opened contact of relay K to control the opening and closing of broadcasting equipment.

The low-voltage DC of power supply VCC output reaches one end of capacitor C1 through reset switch S1 through resistance R1 current limliting again, when Microphone MIC receive after sound from the anode output electric signal of microphone MIC and direct current the one end capacitor C1 meet to be formed it is of short duration Alternating current, due to the characteristic capacitor C1 conducting at this time of capacitor " separated by direct communication ", the 1st pin input high level of integrated chip SK-6 And the 8th pin " level overturning " of integrated chip SK-6 is made to export high level triggering unidirectional controllable silicon S CR conducting simultaneously certainly Lock, relay K obtains electric normally-closed contact and is attracted broadcasting equipment unlatching after unidirectional controllable silicon S CR conducting, electric after pressing reset switch S1 Source disconnecting circuit realizes that resetting broadcasting equipment stops playing.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the protection scope of the utility model.

Claims (1)

1. a kind of acoustic control trigger circuit of broadcasting equipment, it is characterised in that: including integrated chip, resistance R1, rheostat R2, resistance R3, relay K, reset switch S1, diode D, unidirectional controllable silicon S CR, microphone MIC and capacitor C1, power supply VCC, which comes out, to be connected again Bit switch S1, reset switch S1, which come out, is divided into three road first via connection unidirectional controllable silicon S CR anode, unidirectional controllable silicon S CR cathode Then the power end for connecting relay K out comes out from another power end of relay K meets GND, and the integrated chip is SK-6 Model, reset switch S1 come out the 6th pin of the second tunnel connection integrated chip SK-6, and reset switch S1 comes out third road connection electricity R1 is hindered, resistance R1 comes out the one end for being divided into two-way first via connection capacitor C1 and then connects out from the other end of capacitor C1 integrated The 1st pin of chip SK-6, then the anode that resistance R1 comes out the second tunnel connection microphone MIC comes out from the cathode of microphone MIC connects GND, the both ends of the rheostat R2 connect the 2nd pin and the 3rd pin of integrated chip SK-6 respectively, the integrated chip SK-6's 7th pin, which comes out, meets GND, and the 8th pin of the integrated chip SK-6, which comes out to connect, is being sequentially connected resistance R3 and diode D just Pole, the cathode of diode D come out the triggering end for connecting unidirectional controllable silicon S CR, and the power end of the broadcasting equipment passes through relay K's Normally opened contact connects 220V power supply to control the opening and closing of broadcasting equipment.