CN204794952U - Frequency -selecting acoustic control switch - Google Patents
Frequency -selecting acoustic control switch Download PDFInfo
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- CN204794952U CN204794952U CN201520466631.2U CN201520466631U CN204794952U CN 204794952 U CN204794952 U CN 204794952U CN 201520466631 U CN201520466631 U CN 201520466631U CN 204794952 U CN204794952 U CN 204794952U
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Abstract
The utility model discloses a frequency -selecting acoustic control switch, including transformer W, electric capacity C2, potentiometre RP1, relay J and chip IC1, audio input port IN is connected to transformer W's winding N1's one end, and diode D1's negative pole, diode D2's positive pole, transformer W's winding N2 and chip IC1's pin 7 and ground connection are connected to transformer W's winding N1's the other end. The utility model discloses the audio decoder integrated circuit that the utilization of acoustic control switch has phase locked loop carries out the demodulation with received audio signal to the signal control switch element who comes out through the demodulation, thus realized that the audio signal of only special amplitude just can trigger switch element's function, very big reduction the spurious triggering probability, so the circuit have simple structure, interference immunity strong, trigger accurate advantage.
Description
Technical field
The utility model relates to a kind of switch, specifically a kind of frequency-selecting audio-switch.
Background technology
The product of modernized electronic technique during audio-switch, effect of common switch realization Sound control electric equipment can be replaced, very easy to use, therefore the control of acoustic control lamp, sound control electric fan etc. is often used to, but current sound control circuit ubiquity is easily by the problem of false triggering, especially when ambient noise is larger, cause the frequent open and close of circuit, not only waste electric energy, and the aging of fast-circuit can be added.
Utility model content
The purpose of this utility model is to provide the frequency-selecting audio-switch that a kind of structure is simple, prevent false triggering, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of frequency-selecting audio-switch, comprises transformer W, electric capacity C2, potentiometer RP1, relay J and chip IC 1, one end of the winding N1 of described transformer W connects audio input port IN, and the other end of the winding N1 of transformer W connects the negative electrode of diode D1, the anode of diode D2, the winding N2 of transformer W and the pin 7 of chip IC 1 also ground connection, the other end of the winding N2 of transformer W connects electric capacity C1, the anode of diode D1 and the negative electrode of diode D2, the other end of electric capacity C1 connects the pin 3 of chip IC 1, and the pin 4 of chip IC 1 connects power supply VCC, resistance R2, the anode of diode D1, the stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the negative electrode contact resistance R1 of diode D1, the other end two of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the pin 2 of chip IC 1 connects electric capacity C6, the pin 5 of chip IC 1 connects electric capacity C5, the pin 5 contact resistance R3 of chip IC 1, the other end of resistance R3 connects a stiff end of potentiometer RP2, another stiff end contact resistance R4 of potentiometer RP1 and another stiff end of potentiometer RP2, the pin of chip IC 1 connects the other end of electric capacity C9 and resistance R4, and the other end of electric capacity C5 connects electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, the anode of diode D3, relay J, the collector electrode of triode VT1, the pin 1 also ground connection of socket A and chip IC 2, the base stage of other end connecting triode VT1 of electric capacity C2 and the pin 2 of chip IC 2, the emitter of triode VT1 connects the other end of electric capacity C7, another stiff end of potentiometer RP1, the pin 6 of chip IC 2 and the pin 7 of chip IC 2, the other end of resistance R2 connects the contact J-1 of relay J, the pin 4 of chip IC 2 and the pin 8 of chip IC 2, the pin 3 of chip IC 2 connects the negative electrode of diode D3 and the other end of relay J, the other end of the other end gang socket A of the contact J-1 of relay J.
As preferred version of the present utility model: the model of described chip IC 1 is LM567, the model of described chip IC 2 is NE555.
As preferred version of the present utility model: described diode D1 is light-emitting diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model audio-switch utilizes the audio decoder integrated circuit with phase-locked loop that the audio signal received is carried out demodulation, and by demodulation Signal-controlled switch element out, thus achieve the function of the audio signal ability trigger switch element only having special amplitude, greatly reduce false triggering probability, therefore circuit has that structure is simple, strong interference immunity, triggers advantage accurately.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of frequency-selecting audio-switch.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of frequency-selecting audio-switch, comprises transformer W, electric capacity C2, potentiometer RP1, relay J and chip IC 1, one end of the winding N1 of described transformer W connects audio input port IN, and the other end of the winding N1 of transformer W connects the negative electrode of diode D1, the anode of diode D2, the winding N2 of transformer W and the pin 7 of chip IC 1 also ground connection, the other end of the winding N2 of transformer W connects electric capacity C1, the anode of diode D1 and the negative electrode of diode D2, the other end of electric capacity C1 connects the pin 3 of chip IC 1, and the pin 4 of chip IC 1 connects power supply VCC, resistance R2, the anode of diode D1, the stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the negative electrode contact resistance R1 of diode D1, the other end two of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the pin 2 of chip IC 1 connects electric capacity C6, the pin 5 of chip IC 1 connects electric capacity C5, the pin 5 contact resistance R3 of chip IC 1, the other end of resistance R3 connects a stiff end of potentiometer RP2, another stiff end contact resistance R4 of potentiometer RP1 and another stiff end of potentiometer RP2, the pin of chip IC 1 connects the other end of electric capacity C9 and resistance R4, and the other end of electric capacity C5 connects electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, the anode of diode D3, relay J, the collector electrode of triode VT1, the pin 1 also ground connection of socket A and chip IC 2, the base stage of other end connecting triode VT1 of electric capacity C2 and the pin 2 of chip IC 2, the emitter of triode VT1 connects the other end of electric capacity C7, another stiff end of potentiometer RP1, the pin 6 of chip IC 2 and the pin 7 of chip IC 2, the other end of resistance R2 connects the contact J-1 of relay J, the pin 4 of chip IC 2 and the pin 8 of chip IC 2, the pin 3 of chip IC 2 connects the negative electrode of diode D3 and the other end of relay J, the other end of the other end gang socket A of the contact J-1 of relay J.
The model of chip IC 1 is LM567, and the model of described chip IC 2 is NE555.
Diode D1 is light-emitting diode.
Operation principle of the present utility model is: circuit is made up of audio decoder and circuits for triggering, wherein audio decoder comprises chip IC 1, transformer W and diode D1, circuits for triggering comprise triode VT1, chip IC 2 and relay J, chip IC 1 adopts the audio decoder integrated circuit LM567 with phase-locked loop, it by the audio modulation signal demodulation of input out, the centre frequency of chip IC 1 is regulated by potentiometer RP2, the audio signal that circuit can be identified is the sound that user sends, when the condition of acceptance of the audio signal coincident circuit inputted, 8 pin of chip IC 1 export a low saltus step pulse, be added in trigger end 2 pin of chip IC 2, chip IC 2 set, its 3 pin exports high level, relay J conducting, the J-1 adhesive of its contact, socket A is energized, connect thereon start work by electric loading.Audio-switch utilizes the audio decoder integrated circuit with phase-locked loop that the audio signal received is carried out demodulation, and by demodulation Signal-controlled switch element out, thus achieve the function of the audio signal ability trigger switch element only having special amplitude, greatly reduce false triggering probability, therefore circuit has that structure is simple, strong interference immunity, triggers advantage accurately.
Claims (3)
1. a frequency-selecting audio-switch, comprises transformer W, electric capacity C2, potentiometer RP1, relay J and chip IC 1, is characterized in that, one end of the winding N1 of described transformer W connects audio input port IN, and the other end of the winding N1 of transformer W connects the negative electrode of diode D1, the anode of diode D2, the winding N2 of transformer W and the pin 7 of chip IC 1 also ground connection, the other end of the winding N2 of transformer W connects electric capacity C1, the anode of diode D1 and the negative electrode of diode D2, the other end of electric capacity C1 connects the pin 3 of chip IC 1, and the pin 4 of chip IC 1 connects power supply VCC, resistance R2, the anode of diode D1, the stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the negative electrode contact resistance R1 of diode D1, the other end two of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the pin 2 of chip IC 1 connects electric capacity C6, the pin 5 of chip IC 1 connects electric capacity C5, the pin 5 contact resistance R3 of chip IC 1, the other end of resistance R3 connects a stiff end of potentiometer RP2, another stiff end contact resistance R4 of potentiometer RP1 and another stiff end of potentiometer RP2, the pin of chip IC 1 connects the other end of electric capacity C9 and resistance R4, and the other end of electric capacity C5 connects electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, the anode of diode D3, relay J, the collector electrode of triode VT1, the pin 1 also ground connection of socket A and chip IC 2, the base stage of other end connecting triode VT1 of electric capacity C2 and the pin 2 of chip IC 2, the emitter of triode VT1 connects the other end of electric capacity C7, another stiff end of potentiometer RP1, the pin 6 of chip IC 2 and the pin 7 of chip IC 2, the other end of resistance R2 connects the contact J-1 of relay J, the pin 4 of chip IC 2 and the pin 8 of chip IC 2, the pin 3 of chip IC 2 connects the negative electrode of diode D3 and the other end of relay J, the other end of the other end gang socket A of the contact J-1 of relay J.
2. a kind of frequency-selecting audio-switch according to claim 1, is characterized in that, the model of described chip IC 1 is LM567, and the model of described chip IC 2 is NE555.
3. according to a kind of frequency-selecting audio-switch according to claim 1, it is characterized in that, described diode D1 is light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520466631.2U CN204794952U (en) | 2015-07-02 | 2015-07-02 | Frequency -selecting acoustic control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520466631.2U CN204794952U (en) | 2015-07-02 | 2015-07-02 | Frequency -selecting acoustic control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794952U true CN204794952U (en) | 2015-11-18 |
Family
ID=54534922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520466631.2U Expired - Fee Related CN204794952U (en) | 2015-07-02 | 2015-07-02 | Frequency -selecting acoustic control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794952U (en) |
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2015
- 2015-07-02 CN CN201520466631.2U patent/CN204794952U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160702 |