CN203504571U - Audio transmission signal emitting circuit based on infrared ray - Google Patents
Audio transmission signal emitting circuit based on infrared ray Download PDFInfo
- Publication number
- CN203504571U CN203504571U CN201320659943.6U CN201320659943U CN203504571U CN 203504571 U CN203504571 U CN 203504571U CN 201320659943 U CN201320659943 U CN 201320659943U CN 203504571 U CN203504571 U CN 203504571U
- Authority
- CN
- China
- Prior art keywords
- resistance
- diode
- electric capacity
- triode
- locked loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses an audio transmission signal emitting circuit based on infrared rays. The signal emitting circuit comprises resistors from a first resistor to a sixth resistor, capacitors from a first capacitor to a fifth capacitor, a first triode, a second triode, a first diode, a second diode, a first infrared light emitting diode, a second infrared light emitting diode, a potentiometer and a phase-locked loop circuit audio tone decoder. When the audio transmission signal emitting circuit based on infrared rays is in operation, audio signals are input to the signal emitting circuit and fetched from an emitter of the first triode after being subjected to attenuation through the potentiometer, the frequency of the phase-locked loop circuit audio tone decoder is modulated after the signals are subjected to amplitude limiting by the first diode and the second diode, the modulated signals are output by the phase-locked loop circuit audio tone decoder, and the signals drive the infrared light emitting diodes to emit infrared light after being amplified by a second amplifier; and the signal emitting circuit has the advantages of excellent performance and simple structure, and can effectively avoid the influence of the electromagnetic field on signal transmission.
Description
Technical field
The utility model relates to a kind of signal transmission circuit, relates in particular to a kind of signal transmission circuit based on ultrared audio transmission.
Background technology
Wireless audio frequency transmission function can wireless real-time transmission audio signal, can easily realize wired stereo set and upgrade to wireless acoustics equipment, can no longer be subject to the restriction of cable, just simply audio emitter is inserted into sound output, audio receiver is inserted on music equipment, just can enjoy music.Traditional wireless audio frequency transmission function is easily subject to the interference of electromagnetic field now, has affected the laser propagation effect of audio frequency.
Utility model content
The purpose of this utility model provides a kind of signal transmission circuit based on ultrared audio transmission with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of signal transmission circuit based on ultrared audio transmission, comprise the first resistance to the six resistance, the first electric capacity to the five electric capacity, the first triode, the second triode, the first diode, the second diode, the first infrarede emitting diode, the second infrarede emitting diode, potentiometer and phase-locked loop circuit ATD, the first end of described potentiometer is audio signal input end, the sliding end of described potentiometer is connected with the first end of described the first electric capacity, the second end of described the second electric capacity respectively with the first end of described the first resistance, the first end of described the second resistance is connected with the base stage of described the first triode, the second end of described the first resistance respectively with the collector electrode of described the first triode, the first end of described the 4th resistance, the voltage end of described phase-locked loop circuit ATD is connected with the first end of described the 6th resistance, the second end of described the 4th resistance is connected with the first end of described the 4th electric capacity and the zeroing end of described phase-locked loop circuit ATD respectively, the second end ground connection of described the 4th electric capacity, the emitter of described the first triode is connected with the first end of described the second electric capacity with the first end of described the 3rd resistance respectively, the second end of described the second electric capacity respectively with the first end of described the 3rd electric capacity, the negative pole of described the first diode, the positive pole of described the second diode is connected with the input of described phase-locked loop circuit ATD, the second end of described the 6th resistance is connected with the positive pole of described the first infrarede emitting diode and connects cathode voltage, the negative pole of described the first infrarede emitting diode is connected with the positive pole of described the second Light-Emitting Diode, the negative pole of described the second infrarede emitting diode is connected with the collector electrode of described the second triode, the output of described phase-locked loop circuit ATD is connected with the base stage of described the second triode with the first end of described the 5th resistance respectively, the second end of described the 5th resistance is connected with the voltage controling end of described phase-locked loop circuit ATD with the first end of described the 5th electric capacity respectively, the second end of described potentiometer respectively with the second end of described the second resistance, the second end of described the 3rd resistance, the second end of described the 3rd electric capacity, the positive pole of described the first diode, the negative pole of described the second diode, the second end of the earth terminal of described phase-locked loop circuit ATD and described the 5th electric capacity is connected and ground connection.
The beneficial effects of the utility model are:
When the signal transmission circuit of the utility model based on ultrared audio transmission worked, input audio signal, emitter by the first triode after potentiometer decay takes out, after the amplitude limit of the first diode and the second diode, the frequency of phase-locked loop circuit ATD is modulated, after signal after modulation is exported by it, after the second amplifier amplifies, promote infraluminescence diode and send infrared light, this circuit performance is good, simple in structure, can effectively avoid the impact of electromagnetic field on signal transmission.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the signal transmission circuit of the utility model based on ultrared audio transmission.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the signal transmission circuit of the utility model based on ultrared audio transmission, comprise that the first resistance R 1 is to the 6th resistance R 6, the first capacitor C 1 is to the 5th capacitor C 5, the first triode VT1, the second triode VT2, the first diode D1, the second diode D2, the first infrarede emitting diode LED1, the second infrarede emitting diode LED2, potentiometer RP and phase-locked loop circuit ATD IC, the first end of potentiometer RP is audio signal input end, the sliding end of potentiometer RP is connected with the first end of the first capacitor C 1, the second end of the second capacitor C 2 respectively with the first end of the first resistance R 1, the first end of the second resistance R 2 is connected with the base stage of the first triode VT1, the second end of the first resistance R 1 respectively with the collector electrode of the first triode VT1, the first end of the 4th resistance R 4, the voltage end of phase-locked loop circuit ATD IC is connected with the first end of the 6th resistance R 6, the second end of the 4th resistance R 4 is connected with the zeroing end of phase-locked loop circuit ATD IC with the first end of the 4th capacitor C 4 respectively, the second end ground connection of the 4th capacitor C 4, the emitter of the first triode VT1 is connected with the first end of the second capacitor C 2 with the first end of the 3rd resistance R 3 respectively, the second end of the second capacitor C 2 respectively with the first end of the 3rd capacitor C 3, the negative pole of the first diode D1, the positive pole of the second diode D2 is connected with the input of phase-locked loop circuit ATD IC, the second end of the 6th resistance R 6 is connected with the positive pole of the first infrarede emitting diode LED1 and connects cathode voltage, the negative pole of the first infrarede emitting diode LED1 is connected with the positive pole of the second Light-Emitting Diode, the negative pole of the second infrarede emitting diode LED2 is connected with the collector electrode of the second triode VT2, the output of phase-locked loop circuit ATD IC is connected with the base stage of the second triode VT2 with the first end of the 5th resistance R 5 respectively, the second end of the 5th resistance R 5 is connected with the voltage controling end of phase-locked loop circuit ATD IC with the first end of the 5th capacitor C 5 respectively, the second end of potentiometer RP respectively with the second end of the second resistance R 2, the second end of the 3rd resistance R 3, the second end of the 3rd capacitor C 3, the positive pole of the first diode D1, the negative pole of the second diode D2, the second end of the earth terminal of phase-locked loop circuit ATD IC and the 5th capacitor C 5 is connected and ground connection.
The operation principle of the signal transmission circuit of the utility model based on ultrared audio transmission is as follows:
During this radiating circuit work, input audio signal, emitter by the first triode VT1 after potentiometer RP decay takes out, after the amplitude limit of the first diode D1 and the second diode D2, the frequency of phase-locked loop circuit ATD IC is modulated, signal after modulation promotes infraluminescence diode and sends infrared light after being exported by it after the second triode VT2.
Claims (1)
1. the signal transmission circuit based on ultrared audio transmission, it is characterized in that: comprise the first resistance to the six resistance, the first electric capacity to the five electric capacity, the first triode, the second triode, the first diode, the second diode, the first infrarede emitting diode, the second infrarede emitting diode, potentiometer and phase-locked loop circuit ATD, the first end of described potentiometer is audio signal input end, the sliding end of described potentiometer is connected with the first end of described the first electric capacity, the second end of described the second electric capacity respectively with the first end of described the first resistance, the first end of described the second resistance is connected with the base stage of described the first triode, the second end of described the first resistance respectively with the collector electrode of described the first triode, the first end of described the 4th resistance, the voltage end of described phase-locked loop circuit ATD is connected with the first end of described the 6th resistance, the second end of described the 4th resistance is connected with the first end of described the 4th electric capacity and the zeroing end of described phase-locked loop circuit ATD respectively, the second end ground connection of described the 4th electric capacity, the emitter of described the first triode is connected with the first end of described the second electric capacity with the first end of described the 3rd resistance respectively, the second end of described the second electric capacity respectively with the first end of described the 3rd electric capacity, the negative pole of described the first diode, the positive pole of described the second diode is connected with the input of described phase-locked loop circuit ATD, the second end of described the 6th resistance is connected with the positive pole of described the first infrarede emitting diode and connects cathode voltage, the negative pole of described the first infrarede emitting diode is connected with the positive pole of described the second Light-Emitting Diode, the negative pole of described the second infrarede emitting diode is connected with the collector electrode of described the second triode, the output of described phase-locked loop circuit ATD is connected with the base stage of described the second triode with the first end of described the 5th resistance respectively, the second end of described the 5th resistance is connected with the voltage controling end of described phase-locked loop circuit ATD with the first end of described the 5th electric capacity respectively, the second end of described potentiometer respectively with the second end of described the second resistance, the second end of described the 3rd resistance, the second end of described the 3rd electric capacity, the positive pole of described the first diode, the negative pole of described the second diode, the second end of the earth terminal of described phase-locked loop circuit ATD and described the 5th electric capacity is connected and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659943.6U CN203504571U (en) | 2013-10-24 | 2013-10-24 | Audio transmission signal emitting circuit based on infrared ray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659943.6U CN203504571U (en) | 2013-10-24 | 2013-10-24 | Audio transmission signal emitting circuit based on infrared ray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504571U true CN203504571U (en) | 2014-03-26 |
Family
ID=50335510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320659943.6U Expired - Fee Related CN203504571U (en) | 2013-10-24 | 2013-10-24 | Audio transmission signal emitting circuit based on infrared ray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985495A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Guide-rail potentiometer |
-
2013
- 2013-10-24 CN CN201320659943.6U patent/CN203504571U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985495A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Guide-rail potentiometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203504571U (en) | Audio transmission signal emitting circuit based on infrared ray | |
| CN104579494A (en) | Signal transmitting circuit for audio transmission on basis of infrared ray | |
| CN204696446U (en) | A kind of drive circuit for laser module and there is the laser level of this drive circuit | |
| CN104852277B (en) | A kind of driving circuit for mode of laser group and the laser level with the driving circuit | |
| CN203503162U (en) | Signal receiving circuit based on infrared audio transmission | |
| CN202663388U (en) | Remote frequency modulation transmitting device of radio | |
| CN201657257U (en) | Infrared wireless audio signal transmitting and receiving device | |
| CN105978497A (en) | Ripple suppression circuit based audio power amplification system | |
| CN203167252U (en) | Audio power overall-amplification circuit | |
| CN203492095U (en) | High-speed video amplifier | |
| CN201438753U (en) | Network audio digital amplifier | |
| CN204697047U (en) | A kind of wireless receiving circuit | |
| CN203522716U (en) | Wireless handle transmitter | |
| CN104300926A (en) | Audio power amplifier used for multimedia electronic equipment | |
| CN203504550U (en) | Receiver circuit for remote router | |
| CN204305352U (en) | A kind of hearing aids be formulated on cap | |
| CN204244250U (en) | A kind of mobile phone signal detector being applied to examination hall | |
| CN204244242U (en) | Be applicable to the laser transmission receiving circuit of short distance information transmission | |
| CN203788269U (en) | Optical detection drive circuit used for optical coupler | |
| CN203225738U (en) | Small-power high-frequency transmitting circuit used for acoustic wave transmitter | |
| CN207587177U (en) | RF transmitter | |
| CN102427383A (en) | Infrared signal relay device | |
| CN204206132U (en) | Pulse signal transmission modulate circuit | |
| CN204307372U (en) | A kind of VELCRO | |
| CN203180905U (en) | Wireless paging circuit for remote control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |