CN201667638U - Audio combined playing device - Google Patents
Audio combined playing device Download PDFInfo
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- CN201667638U CN201667638U CN2010201521287U CN201020152128U CN201667638U CN 201667638 U CN201667638 U CN 201667638U CN 2010201521287 U CN2010201521287 U CN 2010201521287U CN 201020152128 U CN201020152128 U CN 201020152128U CN 201667638 U CN201667638 U CN 201667638U
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- playing device
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- receiving coil
- amplifier
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Abstract
The utility model provides an audio combined playing device, comprising an audio player, a sending coil connected with an audio output end of the audio player and for sending the audio signal, a receiving coil for receiving the audio signal, an amplifier arranged besides the audio player and for amplifying and outputting the audio signal output by the audio player, wherein the receiving coil is connected with the audio input end of the amplifier. The audio combined playing device has advantages: the large power, high fidelity audio signal is high-efficiency, high frequency width played by a small audio player and the structure is simple and the cost is low.
Description
Technical field
The utility model relates to a kind of playing device, relates in particular to a kind of audio frequency combination playing device.
Background technology
Often use various audio players in people's daily life, still, many players commonly used are owing to carry, and the sound of its output is smaller usually, and voice signal is good inadequately or distortion.Common small-power player has for example mobile phone, MP3, MP4.Mobile phone for example, the function of mobile phone has entered multimedia era, but because the limitation of volume, electric energy, the power output of mobile phone is more limited, it can't export signal high-power, high-fidelity, and it can not export powerful signal audio frequency preferably as power amplifier.And for example power amplifier and so on needs to connect electric wire usually, and it causes high frequency radiation easily, and operation trouble.
Summary of the invention
Technical problem to be solved in the utility model is at less, the easy distortion of power of prior art middle low power player output signal and needs the defective of line, provide a kind of simple in structure do not need line can make that the high efficiency output of small-power player is high-power, the audio frequency of high-fidelity sound combination playing device.
The technical scheme that its technical problem that solves the utility model adopts provides a kind of audio frequency combination playing device, it comprises audio player, also comprise the transmission coil that is used to send audio signal that links to each other with the audio output of audio player, be used for the receiving coil of received audio signal and be positioned at the audio player next door be used for the audio signal of audio player output is amplified the amplifier of output, described receiving coil links to each other with the audio input end of described amplifier.
In above-mentioned audio frequency combination playing device, the impedance of described receiving coil is much larger than the impedance of described transmission coil.
In above-mentioned audio frequency combination playing device, the impedance of described receiving coil is at least ten times of impedance of described transmission coil.
In above-mentioned audio frequency combination playing device, described transmission coil is stranded coil.
In above-mentioned audio frequency combination playing device, the magnetic permeability of described transmission coil is greater than every meter of 150000 Henry.
In above-mentioned audio frequency combination playing device, also comprise the radome that is used for the shield electromagnetic interference receiving coil that is built in the amplifier, receiving coil is arranged in the radome.
In above-mentioned audio frequency combination playing device, described amplifier is the low-power amplifier chip.
In above-mentioned audio frequency combination playing device, described low-power amplifier chip is LM386.
Described amplifier is the multimedia sound equipment, and described transmission coil is built in the bottom of described audio player, and described receiving coil is built in the top of described multimedia sound equipment.
In above-mentioned audio frequency combination playing device, described audio player is mobile phone, MP3 or MP4.
The audio frequency combination playing device that the utility model provides is provided with amplifier, receiving coil and sends coil by the next door at audio player, thereby utilize electromagnetic induction principle, amplifier is by the sound of receiving coil with the high-power high-fidelity of low power voice output of audio player output, and do not need to connect electric wire, simple to operate, and this device only increases coil, and is simple in structure, and cost is lower.
Description of drawings
Fig. 1 is the structural representation of the utility model one preferred embodiment sound intermediate frequency combination playing device;
Fig. 2 is the structural representation of receiving coil in the utility model one preferred embodiment;
Fig. 3 is the structural representation that receiving coil is positioned at radome in the utility model one preferred embodiment.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model is primarily aimed at the small-power player by sending the audio signal of coil and the high efficiency output high-fidelity of receiving coil, and it utilizes electromagnetic induction principle, has avoided the audio player line.To shown in Figure 3, Fig. 1 is the structural representation of the utility model one preferred embodiment sound intermediate frequency combination playing device referring to Fig. 1.The audio frequency combination playing device that the utility model provides comprises audio player 1, transmission coil 2, receiving coil 3, reaches amplifier 4.Send coil 2 and link to each other, be used to send audio signal, send coil 2 and can be built in the audio player 1, also can be positioned at the outside of audio player 1 to receiving coil 3 with the audio output of audio player 1; Amplifier 4 is positioned at the next door of audio player 1, and the audio input end of amplifier 4 links to each other with receiving coil 3.Receiving coil 3 will send the audio signal that coil 2 sends by electromagnetic induction and send amplifier 4 to, thus wireless amplification output audio signal.
Referring to Fig. 1, be example again, send coil 2 and be built in the mobile phone bottom that receiving coil 3 is built in amplifier 4 inside, for example top with the mobile phone in the small-power player.When using mobile phone to play music, be positioned over above the amplifier 4 mobile phone or the next door, promptly mobile phone makes receiving coil 3 corresponding with the position that sends coil 2 with the position of amplifier 4, sends the signal that coil 2 sends so that receiving coil 3 can receive.According to electromagnetic induction principle, when alternating signal when sending coil 2, will produce the electromagnetic field of same frequency at the periphery that sends coil 2; And also can sense its electromagnetic field near the receiving coil 3 that sends coil 2, in receiving coil 3, will produce induced current, this induced current is transported in the amplifier 4, just realized the electromagnetic induction transmission of signal, promptly realized the transmission of the no lead connection of audio signal, it is different from the high-frequency emission transmission, it has realized the signal transmission of no high frequency radiation, reduced electromagnetic interference, the signal high-fidelity of output, and effectiveness height.In preferred embodiment of the present utility model, send coil 2 and adopt coil with high magnetic permeability performance, preferably, the magnetic permeability that sends coil is greater than every meter of 150000 Henry.Send coil 2 and be preferably flatly around, layer coiling, more preferably, it is stranded coil.The impedance of receiving coil 3 is much larger than the impedance of described transmission coil 2, and preferably, the impedance of receiving coil 3 is at least ten times of impedance of described transmission coil 2.Send coil 2 and the receiving coil 3 preferred coils that resistivity is little, inductance value is high, thereby can increase the bandwidth of output audio signal, and high-frequency signal loss is little, fidelity is higher.
In audio frequency that the utility model the provides combination playing device, what amplifier 4 can be for various ways, for example low-power amplifier 4 chips as LM386, perhaps are the multimedia sound equipment, audio player 1 is mobile phone, MP3 or MP4 or other small-power player.
Referring to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of receiving coil in the utility model one preferred embodiment; Fig. 3 is the structural representation that receiving coil is positioned at radome in the utility model one preferred embodiment.Preferably, the audio frequency combination playing device that the utility model provides also comprises radome 5, radome 5 is positioned at amplifier 4, the receiving coil 3 of ribbon core is positioned in the radome 5, a gap corresponding with iron core 6 is only stayed in the outside, and the electromagnetic signal that sends coil 2 is just responded to receiving coil 3 from this gap 6.Iron core is exposed near the center that sends coil 2, both can well receive the signal of receiving coil 3, can shield extraneous electromagnetic interference again, reduces the induction of error signal to external world.Above-mentioned receiving coil 3 is built in the amplifier 4, and its gap 6 parts are corresponding with the receiving coil 3 of player, needn't do the connection on the electrical equipment, by electromagnetic induction, just can transmit music signal.In the output signal that guarantees high-fidelity, further reduced electromagnetic interference like this.
So audio frequency that the utility model provides combination playing device can be realized the powerful tonequality of the wireless signal with small-power player output high efficiency, high-fidelity signal preferably, and simple in structure, cost is low, and is simple to operate.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. an audio frequency makes up playing device, comprise audio player, it is characterized in that, also comprise the transmission coil that is used to send audio signal that links to each other with the audio output of audio player, be used for the receiving coil of received audio signal and be positioned at the audio player next door be used for the audio signal of audio player output is amplified the amplifier of output, described receiving coil links to each other with the audio input end of described amplifier.
2. audio frequency combination playing device as claimed in claim 1 is characterized in that the impedance of described receiving coil is much larger than the impedance of described transmission coil.
3. audio frequency as claimed in claim 2 combination playing device is characterized in that, the impedance of described receiving coil is at least ten times of impedance of described transmission coil.
4. audio frequency combination playing device as claimed in claim 1 is characterized in that described transmission coil is stranded coil.
5. audio frequency combination playing device as claimed in claim 4 is characterized in that the magnetic permeability of described transmission coil is greater than every meter of 150000 Henry.
6. audio frequency combination playing device as claimed in claim 1 is characterized in that also comprise the radome that is used for the shield electromagnetic interference receiving coil that is built in the amplifier, receiving coil is arranged in the radome.
7. audio frequency combination playing device as claimed in claim 1 is characterized in that described amplifier is the low-power amplifier chip.
8. audio frequency combination playing device as claimed in claim 7 is characterized in that described low-power amplifier chip is LM386.
9. audio frequency combination playing device as claimed in claim 1 is characterized in that described amplifier is the multimedia sound equipment, and described transmission coil is built in the bottom of described audio player, and described receiving coil is built in the top of described multimedia sound equipment.
10. as each described audio frequency combination playing device in the claim 1 to 9, it is characterized in that described audio player is mobile phone, MP3 or MP4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201521287U CN201667638U (en) | 2010-03-31 | 2010-03-31 | Audio combined playing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201521287U CN201667638U (en) | 2010-03-31 | 2010-03-31 | Audio combined playing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667638U true CN201667638U (en) | 2010-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201521287U Expired - Fee Related CN201667638U (en) | 2010-03-31 | 2010-03-31 | Audio combined playing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201667638U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545969A (en) * | 2010-12-27 | 2012-07-04 | 张伟斌 | Accessory device for host device and short range communication system and method |
| CN102780956A (en) * | 2012-06-15 | 2012-11-14 | 李国材 | Non-plug-in type electromagnetic induction voice-frequency amplifying sound box and audio playing device |
| CN103428592A (en) * | 2012-05-21 | 2013-12-04 | 张伟斌 | Sound amplifying device |
-
2010
- 2010-03-31 CN CN2010201521287U patent/CN201667638U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545969A (en) * | 2010-12-27 | 2012-07-04 | 张伟斌 | Accessory device for host device and short range communication system and method |
| CN102545969B (en) * | 2010-12-27 | 2014-09-24 | 张伟斌 | Accessory device for host device and short range communication system and method |
| CN103428592A (en) * | 2012-05-21 | 2013-12-04 | 张伟斌 | Sound amplifying device |
| CN102780956A (en) * | 2012-06-15 | 2012-11-14 | 李国材 | Non-plug-in type electromagnetic induction voice-frequency amplifying sound box and audio playing device |
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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: 20101208 Termination date: 20160331 |