CN209375892U - A kind of novel radio earphone - Google Patents
A kind of novel radio earphone Download PDFInfo
- Publication number
- CN209375892U CN209375892U CN201920371106.0U CN201920371106U CN209375892U CN 209375892 U CN209375892 U CN 209375892U CN 201920371106 U CN201920371106 U CN 201920371106U CN 209375892 U CN209375892 U CN 209375892U
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- CN
- China
- Prior art keywords
- receiver
- circuit
- transmitter
- infrared
- earphone
- 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 novel radio earphones；The utility model novel radio earphone includes audio signal, transmitter, receiver, earphone；The audio signal is connect with transmitter；The earphone is connect with receiver；The transmitter includes amplitude modulation circuit, infrared transmitting circuit；The receiver includes infrared receiving circuit, voltage amplifier circuit, audio power amplifier circuit, level control circuit；Novel radio earpiece application infrared technique provided by the utility model is made, and using amplitude modulation system, the amplitude modulation of audio signal is transmitted with infrared ray, with power supply mode multiplicity, for transmission range close to 10m, sound quality is preferable, infrared signal is not substantially by electromagnetic interference, the features such as cost performance is high.
Description
Technical field
The utility model relates to radio transmission technical field more particularly to a kind of novel radio earphones.
Background technique
Currently, being not influence other people to learn and rest, and convenient for activity, wireless ear can be used when using stereo set
Machine is listened to.Bluetooth headset uses GFSK Gaussian Frequency Shift Keying (GFSK) modulation technique, is a kind of frequency-shift keying mode.Bluetooth headset is in language
Sound transmission aspect performance is prominent, also have automatically access mobile network, strong interference immunity, cost performance it is high, it is small in size and
The advantages that low-power consumption, but bluetooth headset it is current price it is more expensive, need host have Bluetooth function, cost performance relatively come
It says not fine.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of novel radio earphone, the technology
Scheme is achieved in that
A kind of novel radio earphone, including audio signal, transmitter, receiver, earphone；The audio signal and transmitter
Connection；The earphone is connect with receiver；The transmitter includes amplitude modulation circuit, infrared transmitting circuit；The receiver
Including infrared receiving circuit, voltage amplifier circuit, audio power amplifier circuit, level control circuit.
Further, the transmitter amplitude modulation circuit includes 1 one, transistor, and transmitter infrared transmitting circuit includes
Infrared-emitting diode 3 series connection, and it is directed toward 3 different directions.
Further, the receiver infrared receiving circuit includes 4 parallel connections of infrared receiving diode, and receiver voltage is put
Big circuit includes 1, transistor, and receiver audio power amplifier includes MAX9722 chip, and level control circuit for receiver includes
1, transistor.
Further, the transmitter is consistent with receiver power supply mode, using MAX1726 chip；MAX1726 is power supply
Linear regulator chip makes earphone power supply mode realize diversification, and there are many selection schemes, and No. 3 batteries of two sections, lithium electricity can be used
Pond or battery.
Novel radio earpiece application infrared technique provided by the utility model is made, and using amplitude modulation system, uses
Infrared ray transmits the amplitude modulation of audio signal, has power supply mode multiplicity, for transmission range close to 10m, sound quality is preferable, infrared signal
Substantially not by electromagnetic interference, the features such as cost performance is high.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and detailed description；
Fig. 1 is the utility model novel radio earphone system block diagram.
Fig. 2 is the utility model transmitter circuitry figure.
Fig. 3 is the utility model receiver circuit figure.
Fig. 4 is the utility model power supply circuit figure.
Specific embodiment
As shown in Figure 1, a kind of revealed novel radio earphone of the utility model, including audio signal, transmitter receive
Machine, earphone；The audio signal is connect with transmitter；The earphone is connect with receiver；The transmitter includes amplitude modulation
Circuit, infrared transmitting circuit；The receiver includes infrared receiving circuit, voltage amplifier circuit, audio power amplifier circuit, level control
Circuit processed.
When it is implemented, the transmitter amplitude modulation circuit includes 1 one, transistor, transmitter infrared transmitting circuit packet
Infrared-emitting diode 3 are included, and is directed toward 3 different directions, obtains being had by the infrared light of audio signal amplitude modulation so close
360 ° of transmitting range.It is specific as shown in Figure 2.
When it is implemented, the receiver infrared receiving circuit includes infrared receiving diode 4, receiver voltage amplification
Circuit includes 1, transistor, and receiver audio power amplifier includes MAX9722 chip, and level control circuit for receiver includes crystalline substance
Body pipe 1.It is specific as shown in Figure 3.
When it is implemented, the transmitter is consistent with receiver power supply mode, using MAX1726 chip；MAX1726 is electricity
Source linear regulator chip makes earphone power supply mode realize diversification, and there are many selection schemes, and two sections No. 3 batteries, lithiums can be used
Battery or battery.It is specific as shown in Figure 4.
Embodiment is only one embodiment of the utility model, for those of ordinary skill in the art, is not being paid
Under the premise of creative labor, other embodiments can also be obtained with reference to the accompanying drawings, also within protection scope of the present invention.
Claims (4)
1. a kind of novel radio earphone, it is characterised in that: including audio signal, transmitter, receiver, earphone；The audio letter
It number is connect with transmitter；The earphone is connect with receiver；The transmitter includes amplitude modulation circuit, infrared transmitting circuit；
The receiver includes infrared receiving circuit, voltage amplifier circuit, audio power amplifier circuit, level control circuit.
2. novel radio earphone according to claim 1, it is characterised in that: the transmitter amplitude modulation circuit includes crystalline substance
Body pipe 1 one, transmitter infrared transmitting circuit includes infrared-emitting diode 3 series connection.
3. novel radio earphone according to claim 1, it is characterised in that: the receiver infrared receiving circuit includes red
4 parallel connections of outer reception diode, receiver voltage amplifier circuit include 1, transistor, and receiver audio power amplifier includes
MAX9722 chip, level control circuit for receiver include 1, transistor.
4. novel radio earphone according to claim 1, it is characterised in that: the transmitter and receiver power supply mode one
It causes, using MAX1726 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371106.0U CN209375892U (en) | 2019-03-21 | 2019-03-21 | A kind of novel radio earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371106.0U CN209375892U (en) | 2019-03-21 | 2019-03-21 | A kind of novel radio earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375892U true CN209375892U (en) | 2019-09-10 |
Family
ID=67824218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920371106.0U Expired - Fee Related CN209375892U (en) | 2019-03-21 | 2019-03-21 | A kind of novel radio earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375892U (en) |
-
2019
- 2019-03-21 CN CN201920371106.0U patent/CN209375892U/en not_active Expired - Fee Related
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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: 20190910 Termination date: 20200321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |