CN204697015U - A kind of based on microcomputer-controlled headphone amplifier circuit structure - Google Patents
A kind of based on microcomputer-controlled headphone amplifier circuit structure Download PDFInfo
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- CN204697015U CN204697015U CN201520408894.8U CN201520408894U CN204697015U CN 204697015 U CN204697015 U CN 204697015U CN 201520408894 U CN201520408894 U CN 201520408894U CN 204697015 U CN204697015 U CN 204697015U
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Abstract
The utility model describes a kind of based on microcomputer-controlled headphone amplifier circuit structure, it comprises chip IC, first pin of chip IC is connected by K switch and DC power supply U, second pin of chip IC is connected with the 4th pin of chip IC after being connected with electric capacity C9, resistance R8, electric capacity C10 successively again, be connected with electric capacity C8 between second pin of chip IC and the 3rd pin, between the 3rd pin and the 4th pin of chip IC of chip IC, be connected with diode D2; Be connected to the collector electrode of triode Q2 after 5th pin of chip IC is connected with electric capacity C7 and resistance R6, after the emitter of triode Q2 is connected with diode D1 forward, be connected to the 5th pin of chip IC.The utility model tool tone quality improving is effective, and improves the stability of equipment, and reduce cost, overall cost is lower, is provided with the wider scope of application, can meet the user demand of more general populations.
Description
Technical field
The utility model relates to a kind of intelligent control circuit, especially a kind of based on microcomputer-controlled headphone amplifier circuit structure, belongs to electronic technology field.
Background technology
Earphone Amplifier is called for short
ear is put, in earphone system, if
source of soundand add an earphone power amplifier between earphone, just can improve
tonequality, adjustment System tone color trend, this is at earphone
fanin build consensus.Particularly for the earphone that the market price is comparatively high-grade more than thousand yuan, after installing Earphone Amplifier additional, tonequality can have clear improvement.Although general source of sound is also provided with headphone output socket mostly, circuit and the materials of this jack behind are generally more mediocre.For CD player, be generally all do by the amplifier that model is 4556 or 4558 to amplify in the market, cost only several yuan, tonequality is also poor accordingly.Even comparatively senior CD player, its earphone amplifying circuit also seldom has and reaches " fever " level, and the improvement ability of tonequality is still very limited.Current earphone
amplifiernot only there is the defect of noise or distortion, and price is generally higher, more or dependence on import, and the most cheaply in imported goods is also not less than 2000 yuan, expensive reaches tens thousand of yuans, and this is too high concerning the threshold used consumer.
Utility model content
For above-mentioned deficiency of the prior art, main purpose of the present utility model is to solve that existing current headphone amplifier circuit tonequality is poor, antijamming capability is weak, expensive problem, and provide one to have good tone quality improving, and output audio signal is stablized, price is also relatively reasonable based on microcomputer-controlled headphone amplifier circuit structure.
The technical solution of the utility model: a kind of based on microcomputer-controlled headphone amplifier circuit structure, it is characterized in that, comprise chip IC, first pin of described chip IC is connected by K switch and DC power supply U, second pin of chip IC is connected with the 4th pin of chip IC after being connected with electric capacity C9, resistance R8, electric capacity C10 successively again, be connected with electric capacity C8 between second pin of chip IC and the 3rd pin of chip IC, between the 3rd pin and the 4th pin of chip IC of chip IC, be connected with diode D2; The collector electrode of triode Q2 is connected to after 5th pin of described chip IC is connected with electric capacity C7 and resistance R6, the 5th pin of chip IC is connected to after the emitter of described triode Q2 is connected with diode D1 forward, be connected with the emitter of triode Q1 after the base stage of described triode Q2 is connected with electric capacity C3, be connected with power output end VOUT1 after the collector electrode of triode Q1 is connected with resistance R9 with swept resistance R2, resistance R1 successively, electric capacity C1 is connected with, the other end ground connection of described electric capacity C1 between swept resistance R2 and resistance R1; 9th pin of described chip IC is connected between resistance R9 and resistance R1; The base stage of described triode Q1 is connected with one end of electric capacity C2 and one end of resistance R3 respectively, the other end ground connection of described electric capacity C2, the other end of described resistance R3 is connected with one end of resistance R10 and the 7th pin of chip IC respectively, and the other end of described resistance R10 is connected with power output end VOUT2; 6th pin of chip IC is connected with electric capacity C6, the other end of described electric capacity C6 is connected with one end of resistance R5 and one end of electric capacity C5 respectively, the other end ground connection of described resistance R5, the other end of described electric capacity C5 connects one end of swept resistance R7, the other end of described swept resistance R7 is connected with one end of resistance R4 and one end of electric capacity C4 respectively, the other end ground connection of described resistance R4, the other end of described electric capacity C4 is connected on the 8th pin of chip IC.
Headphone amplifier circuit structure of the present utility model for control core, utilizes chip IC controlling and adjustment output voltage and watt level with miniature computer chip IC, thus can obtain the good audio amplification signal of relative quality; Meanwhile, the utility model utilizes the isolation effect of triode, can eliminate most noise, reaches the object promoting tonequality.
Optimally, described chip IC model is AT89C2051.
Optimally, the model of described triode Q1 is 9013LT1, and the model of described triode Q2 is TEC9015C.
Optimally, the voltage of described DC power supply U is 5V.
Relative to prior art, the utility model has following beneficial effect:
1, tone quality improving is effective: headphone amplifier circuit of the present utility model is using microcomputer IC as control core, can realize filtering the clutter in original audio signal and frequency continuity improves, thus reach raising output audio quality, improve the object of tonequality.
2, improve the stability of equipment: the utility model passes through the process of triode and supporting electric capacity, be provided with higher antijamming capability, stability significantly improves, and has had good lifting to the continuity that audio frequency exports, and solves the problem that the discontinuous card of audio signal pauses.
3, reduce cost, overall cost is lower, is provided with the wider scope of application, can meet the user demand of more general populations.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram based on microcomputer-controlled headphone amplifier circuit structure of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of based on microcomputer-controlled headphone amplifier circuit structure, comprise chip IC, described chip IC model is AT89C2051.First pin of described chip IC is connected by K switch and DC power supply U, and the voltage of described DC power supply U is 5V.Second pin of chip IC is connected with the 4th pin of chip IC after being connected with electric capacity C9, resistance R8, electric capacity C10 successively again, be connected with electric capacity C8 between second pin of chip IC and the 3rd pin of chip IC, between the 3rd pin and the 4th pin of chip IC of chip IC, be connected with diode D2; Be connected to the collector electrode of triode Q2 after 5th pin of described chip IC is connected with electric capacity C7 and resistance R6, the model of described triode Q2 is TEC9015C.The 5th pin of chip IC is connected to after the emitter of described triode Q2 is connected with diode D1 forward, be connected with the emitter of triode Q1 after the base stage of described triode Q2 is connected with electric capacity C3, the model of described triode Q1 is 9013LT1, be connected with power output end VOUT1 after the collector electrode of triode Q1 is connected with resistance R9 with swept resistance R2, resistance R1 successively, electric capacity C1 is connected with, the other end ground connection of described electric capacity C1 between swept resistance R2 and resistance R1; 9th pin of described chip IC is connected between resistance R9 and resistance R1; The base stage of described triode Q1 is connected with one end of electric capacity C2 and one end of resistance R3 respectively, the other end ground connection of described electric capacity C2, the other end of described resistance R3 is connected with one end of resistance R10 and the 7th pin of chip IC respectively, and the other end of described resistance R10 is connected with power output end VOUT2; 6th pin of chip IC is connected with electric capacity C6, the other end of described electric capacity C6 is connected with one end of resistance R5 and one end of electric capacity C5 respectively, the other end ground connection of described resistance R5, the other end of described electric capacity C5 connects one end of swept resistance R7, the other end of described swept resistance R7 is connected with one end of resistance R4 and one end of electric capacity C4 respectively, the other end ground connection of described resistance R4, the other end of described electric capacity C4 is connected on the 8th pin of chip IC.
Headphone amplifier circuit structure of the present utility model has and well controls and regulating power, and have obviously good effect improving in tonequality, and stability is fine, price comparison is low, is very suitable for public demand.
It should be noted that, above embodiment is only in order to illustrate technical solutions of the utility model but not restriction technologies scheme, although applicant is explained in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those amendments that technical solutions of the utility model are carried out or equivalently to replace, aim and the scope of the technical program can not be departed from, all should be encompassed in the middle of the utility model right.
Claims (4)
1. one kind based on microcomputer-controlled headphone amplifier circuit structure, it is characterized in that, comprise chip IC, first pin of described chip IC is connected by K switch and DC power supply U, second pin of chip IC is connected with the 4th pin of chip IC after being connected with electric capacity C9, resistance R8, electric capacity C10 successively again, be connected with electric capacity C8 between second pin of chip IC and the 3rd pin of chip IC, between the 3rd pin and the 4th pin of chip IC of chip IC, be connected with diode D2; The collector electrode of triode Q2 is connected to after 5th pin of described chip IC is connected with electric capacity C7 and resistance R6, the 5th pin of chip IC is connected to after the emitter of described triode Q2 is connected with diode D1 forward, be connected with the emitter of triode Q1 after the base stage of described triode Q2 is connected with electric capacity C3, be connected with power output end VOUT1 after the collector electrode of triode Q1 is connected with resistance R9 with swept resistance R2, resistance R1 successively, electric capacity C1 is connected with, the other end ground connection of described electric capacity C1 between swept resistance R2 and resistance R1; 9th pin of described chip IC is connected between resistance R9 and resistance R1; The base stage of described triode Q1 is connected with one end of electric capacity C2 and one end of resistance R3 respectively, the other end ground connection of described electric capacity C2, the other end of described resistance R3 is connected with one end of resistance R10 and the 7th pin of chip IC respectively, and the other end of described resistance R10 is connected with power output end VOUT2; 6th pin of chip IC is connected with electric capacity C6, the other end of described electric capacity C6 is connected with one end of resistance R5 and one end of electric capacity C5 respectively, the other end ground connection of described resistance R5, the other end of described electric capacity C5 connects one end of swept resistance R7, the other end of described swept resistance R7 is connected with one end of resistance R4 and one end of electric capacity C4 respectively, the other end ground connection of described resistance R4, the other end of described electric capacity C4 is connected on the 8th pin of chip IC.
2. one according to claim 1 is based on microcomputer-controlled headphone amplifier circuit structure, it is characterized in that, described chip IC model is AT89C2051.
3. one according to claim 2 is based on microcomputer-controlled headphone amplifier circuit structure, it is characterized in that, the model of described triode Q1 is 9013LT1, and the model of described triode Q2 is TEC9015C.
4. one according to claim 3 is based on microcomputer-controlled headphone amplifier circuit structure, it is characterized in that, the voltage of described DC power supply U is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408894.8U CN204697015U (en) | 2015-06-15 | 2015-06-15 | A kind of based on microcomputer-controlled headphone amplifier circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408894.8U CN204697015U (en) | 2015-06-15 | 2015-06-15 | A kind of based on microcomputer-controlled headphone amplifier circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204697015U true CN204697015U (en) | 2015-10-07 |
Family
ID=54237264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520408894.8U Expired - Fee Related CN204697015U (en) | 2015-06-15 | 2015-06-15 | A kind of based on microcomputer-controlled headphone amplifier circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204697015U (en) |
-
2015
- 2015-06-15 CN CN201520408894.8U patent/CN204697015U/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 |
Granted publication date: 20151007 Termination date: 20160615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |