CN204272366U - A kind of mini audio - Google Patents
A kind of mini audio Download PDFInfo
- Publication number
- CN204272366U CN204272366U CN201420866275.9U CN201420866275U CN204272366U CN 204272366 U CN204272366 U CN 204272366U CN 201420866275 U CN201420866275 U CN 201420866275U CN 204272366 U CN204272366 U CN 204272366U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- audio
- resistance
- tda2822m
- power amplifier
- 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
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Abstract
The utility model discloses a kind of mini audio, for the power amplification of MP3 player, comprise TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance R2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, the utility model provides a kind of low cost, low volume, power consumption is little, structure is simple, the mini audio carried with, and the utility model is used for the power amplification of MP3 player.
Description
Technical field
The utility model relates to sound equipment, particularly a kind of mini audio.
Background technology
Sound equipment volume on existing market is all larger, and power consumption is also large, and cost is high, not easily carry with, bring inconvenience, missed potter the fan danced in public places, because sound equipment volume is large, sound equipment cannot be carried with, can only be danced by MP3 player power amplifier, because space, public place is larger, have noise, therefore people dance can not the very clear music hearing MP3 player, the rhythm being difficult to and then MP3 player is danced.
Utility model content
The purpose of this utility model overcomes deficiency in existing product, the mini audio provide a kind of low cost, low volume, power consumption is little, structure is simple, carried with, and the utility model is used for the power amplification of MP3 player.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of mini audio of the present utility model, for the power amplification of MP3 player, comprises TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance R2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, electric capacity C6 connects 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R1, 6 pins of TDA2822M audio-frequency power amplifier U1 connect 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R2, 8 pins of TDA2822M audio-frequency power amplifier U1 connect 5 pins of TDA2822M audio-frequency power amplifier U1 by electric capacity C3, 5 pins of TDA2822M audio-frequency power amplifier U1 connect earth signal by electric capacity C4, 4 pins of TDA2822M audio-frequency power amplifier U1 connect earth signal, 2 pins of TDA2822M audio-frequency power amplifier U1 connect 5V power supply, 1 pin of TDA2822M audio-frequency power amplifier U1, loud speaker B is connected between 3 pins, 1 pin of TDA2822M audio-frequency power amplifier U1 connects electric capacity C1, electric capacity C1 connects earth signal by resistance R3, and 3 pins of TDA2822M audio-frequency power amplifier U1 connect electric capacity C2, and electric capacity C2 connects earth signal by resistance R4.
The utility model also comprises electric capacity C5, and 5V power supply connects earth signal by electric capacity C5.
Electric capacity C6 of the present utility model is 10uF, and resistance R1 is 100K, and resistance R2 is 10K, and electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2 are 10uF, and resistance R3, resistance R4 are 4.7 ohm.
Electric capacity C5 of the present utility model is 100uF.
The beneficial effects of the utility model are as follows: the utility model comprises TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance P2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, therefore the device amount required for the utility model is few, and circuit is simple, therefore the utility model volume is little, cost is low, power consumption is little, is easy to carry with; The utility model adopts TDA2822M audio-frequency power amplifier, and tonequality is good; Electric capacity C6 connects 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R1, electric capacity C6 can filtering direct current signal, and resistance R1 carries out dividing potential drop effect, when making input signal be less than 0.7V, can not distortion be there is, make the audio signal of MP3 player can not distortion.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
As shown in Figure 1, a kind of mini audio, for the power amplification of MP3 player, comprises TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance R2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, electric capacity C6 connects 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R1, 6 pins of TDA2822M audio-frequency power amplifier U1 connect 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R2, 8 pins of TDA2822M audio-frequency power amplifier U1 connect 5 pins of TDA2822M audio-frequency power amplifier U1 by electric capacity C3, 5 pins of TDA2822M audio-frequency power amplifier U1 connect earth signal by electric capacity C4, 4 pins of TDA2822M audio-frequency power amplifier U1 connect earth signal, 2 pins of TDA2822M audio-frequency power amplifier U1 connect 5V power supply, 1 pin of TDA2822M audio-frequency power amplifier U1, loud speaker B is connected between 3 pins, 1 pin of TDA2822M audio-frequency power amplifier U1 connects electric capacity C1, electric capacity C1 connects earth signal by resistance R3, and 3 pins of TDA2822M audio-frequency power amplifier U1 connect electric capacity C2, and electric capacity C2 connects earth signal by resistance R4.The utility model also comprises electric capacity C5,5V power supply connects earth signal by electric capacity C5, electric capacity C6 of the present utility model is 10uF, resistance R1 is 100K, resistance R2 is 10K, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2 are 10uF, and resistance R3, resistance R4 are 4.7 ohm, and electric capacity C5 is 100uF.The utility model comprises TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance R2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, therefore the device amount required for the utility model is few, and circuit is simple, therefore the utility model volume is little, cost is low, power consumption is little, is easy to carry with; The utility model adopts TDA2822M audio-frequency power amplifier, and tonequality is good; Electric capacity C6 connects 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R1, electric capacity C6 can filtering direct current signal, and resistance R1 carries out dividing potential drop effect, when making input signal be less than 0.7V, can not distortion be there is, make the audio signal of MP3 player can not distortion.In actual use, only need MP3 player to connect electric capacity C6, the audio signal of MP3 player carries out power amplifier by loud speaker B after power amplification, playback effect is fine, low in energy consumption, people are clearly heard in public places, and the melody of music is danced, very practical.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection range of the present utility model.
Claims (4)
1. a mini audio, for the power amplification of MP3 player, is characterized in that, comprises TDA2822M audio-frequency power amplifier U1, electric capacity C6, resistance R1, resistance R2, electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2, resistance R3, electric capacity C1, resistance R4, loud speaker B, 5V power supply, described electric capacity C6 connects 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R1, 6 pins of described TDA2822M audio-frequency power amplifier U1 connect 7 pins of TDA2822M audio-frequency power amplifier U1 by resistance R2, 8 pins of described TDA2822M audio-frequency power amplifier U1 connect 5 pins of TDA2822M audio-frequency power amplifier U1 by electric capacity C3, 5 pins of described TDA2822M audio-frequency power amplifier U1 connect earth signal by electric capacity C4, 4 pins of described TDA2822M audio-frequency power amplifier U1 connect earth signal, 2 pins of described TDA2822M audio-frequency power amplifier U1 connect 5V power supply, 1 pin of described TDA2822M audio-frequency power amplifier U1, loud speaker B is connected between 3 pins, 1 pin of described TDA2822M audio-frequency power amplifier U1 connects electric capacity C1, described electric capacity C1 connects earth signal by resistance R3, and 3 pins of described TDA2822M audio-frequency power amplifier U1 connect electric capacity C2, and described electric capacity C2 connects earth signal by resistance R4.
2. a kind of mini audio according to claim 1, is characterized in that, also comprise electric capacity C5, and described 5V power supply connects earth signal by electric capacity C5.
3. a kind of mini audio according to claim 1, it is characterized in that, described electric capacity C6 is 10uF, described resistance R1 is 100K, described resistance R2 is 10K, and described electric capacity C3, electric capacity C4, electric capacity C1, electric capacity C2 are 10uF, and described resistance R3, resistance R4 are 4.7 ohm.
4. a kind of mini audio according to claim 3, it is characterized in that, described electric capacity C5 is 100uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866275.9U CN204272366U (en) | 2014-12-26 | 2014-12-26 | A kind of mini audio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866275.9U CN204272366U (en) | 2014-12-26 | 2014-12-26 | A kind of mini audio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272366U true CN204272366U (en) | 2015-04-15 |
Family
ID=52807211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866275.9U Expired - Fee Related CN204272366U (en) | 2014-12-26 | 2014-12-26 | A kind of mini audio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204272366U (en) |
-
2014
- 2014-12-26 CN CN201420866275.9U patent/CN204272366U/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: 20150415 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |