CN2553569Y - Audio-frequency amplified transmitter and receiver - Google Patents
Audio-frequency amplified transmitter and receiver Download PDFInfo
- Publication number
- CN2553569Y CN2553569Y CN 02244116 CN02244116U CN2553569Y CN 2553569 Y CN2553569 Y CN 2553569Y CN 02244116 CN02244116 CN 02244116 CN 02244116 U CN02244116 U CN 02244116U CN 2553569 Y CN2553569 Y CN 2553569Y
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- China
- Prior art keywords
- mode selection
- selection switch
- audio frequency
- amplifier
- infrared
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Abstract
The utility model discloses an audio-frequency amplified transmitter and receiver. An audio-frequency amplified transmitter is used for switching the aural signal which is required to be transmitted in the input end of the audio-frequency amplified transmitter. After the aural signal passes through an audio frequency amplifier, a mode selection switch and a radio transmitter or a multi-angle infrared transmitter, the audio-frequency amplified transmitter sends radio wave or infrared light wave outwards; the receiver realizes the function through that the radio wave which is received by a wireless receiving amplifier is outputted to the mode selection switch, or the infrared light wave which is received by the multi-angle infrared transmitter is outputted to the mode selection switch through an infrared receiving amplifier, and the transmitted to an earphone through passing through a volume control circuit and a power amplifier by the mode selection switch, the signal which is same as the access aural signal can be heard in the earphone, the signal not only can be used by one, but also can be used by a plurality of persons at the same time.
Description
Technical field
The utility model belongs to wireless audio device.
Background technology
Existing television set, radio-cassette player etc. all are equipped with audio-frequency power amplifier, it is connected with loud speaker or earphone respectively, and when people listen to program, but the sound of being afraid of loud speaker is when hindering other people, often use a secondary wired earphone, and the one end is inserted on the earphone jack of stereo set.But therefore this device has limited listener's scope of activities because connect earphone and stereo set by electric wire, has also limited listener's quantity simultaneously.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of audio frequency amplifying emission device and receiving system are provided.The technical solution of the utility model is summarized as follows:
A kind of audio frequency amplifying emission device, it comprises audio frequency amplifier 1, mode selection switch 2, transmitting set 4, described audio frequency amplifier 1, link to each other with described mode selection switch 2, transmitting set 4 successively, described mode selection switch 2 also is connected with multi-angle infrared transmitter 3, and described multi-angle infrared transmitter 3 is made of transparent material shell 15 and two infrared emission tubes 16 of setting within it at least.
The audio frequency amplifier 1 that the utility model proposed can be selected low noise integrated circuit or circuit common for use, mode selection switch 2 selectable electronic switch or mechanical switchs, optional 2～the 15mW of the transmitting power of transmitting set 4, frequency is the frequency modulated radio signal of 70～108MHz or the special-purpose frequency range that country allows use, and transmitting set 4 also can include the frequency stabilization circuit of quartz oscillator.
Receiving system with audio frequency amplifying emission device coupling, it comprises radio reception amplifier 6, mode selection switch 11, volume control circuit 7, power amplifier 8, earphone 9, described radio reception amplifier 6 successively with described mode selection switch 11, volume control circuit 7, power amplifier 8, earphone 9 links to each other, described mode selection switch 11 also connects infrared reception amplifier 5 successively, multi-angle infrared remote receiver 10, described multi-angle infrared remote receiver 10 is by transparent material shell 14 and reflective tapered parts 12 in it are set, infrared receiving tube 13 constitutes, and the following cone angle of described reflective tapered parts 12 is corresponding with described infrared receiving tube 13.
By audio frequency amplifying emission device and the receiving system that the utility model proposed, monophonic signal can be transmitted and also stereophonic signal can be transmitted, the multi-angle infrared remote receiver can be gathered the infrared signal from 360 degree angles, the infrared signal that receives is inputed to infrared reception amplifier, produce the amplification of fidelity function, and can use simultaneously for a people or a few people.
Audio frequency amplifying emission device that the utility model proposed and receiving system can be used as a kind of small sized product and are applied to carry out in the systems such as television set, sound equipment wireless type audio frequency propagation usefulness, also can allow it become a kind of fixing circuit, external being installed on television set or the stereo set.
Description of drawings
Fig. 1 is an audio frequency amplifying emission device connection diagram
Fig. 2 is and audio frequency amplifying emission device receiver matching connection diagram
Fig. 3 is that the multi-angle infrared transmitter is formed schematic diagram
Fig. 4 is that the multi-angle infrared remote receiver is formed schematic diagram
Fig. 5 is two multi-angle infrared remote receiver combination schematic diagrames that are mutually 90 degree
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Audio frequency amplifying emission device, it comprises audio frequency amplifier 1, mode selection switch 2, transmitting set 4, audio frequency amplifier 1, link to each other with mode selection switch 2, transmitting set 4 successively, mode selection switch 2 also is connected with multi-angle infrared transmitter 3, audio frequency amplifying emission device, the audio signal that will transmit is inserted its input, it is outwards launched signal with radio wave or infrared waves by audio frequency amplifier 1, mode selection switch 2, transmitting set 4 or multi-angle infrared transmitter 3.Multi-angle infrared transmitter 3 is made of transparent material shell 15 and two infrared emission tubes 16 of setting within it at least, and infrared emission tube 16 is arranged and certain each other angle according to horizontal mode, and its circuit can be connected also can be in parallel.
Receiving system with audio frequency amplifying emission device coupling, it comprises radio reception amplifier 6, mode selection switch 11, volume control circuit 7, power amplifier 8, earphone 9, radio reception amplifier 6 successively with mode selection switch 11, volume control circuit 7, power amplifier 8, earphone 9 links to each other, mode selection switch 11 also connects infrared reception amplifier 5 successively, multi-angle infrared remote receiver 10, after multi-angle infrared remote receiver 10 receives the signal of being launched by multi-angle infrared transmitter 3, and through infrared reception amplifier 5, the also interchangeable signal of launching by transmitting set 4 that receives by radio receiver 6, through mode selection switch 11, volume control circuit 7, power amplifier 8 reaches earphone 9, at this moment, just can the uppick signal identical in earphone 9 with the audio signal of its access.This signal not only can use for a people, also can use simultaneously for many people.
Multi-angle infrared remote receiver 10 is made of transparent material shell 14 and the reflective tapered parts 12, the infrared receiving tube 13 that are provided with in it, and the following cone angle of reflective tapered parts 12 is corresponding with infrared receiving tube 13.
Multi-angle infrared remote receiver 10 is at least two, and it settles angle to be mutually 45～90 degree.
Claims (7)
1. audio frequency amplifying emission device, it comprises audio frequency amplifier (1), mode selection switch (2), transmitting set (4), it is characterized in that described audio frequency amplifier (1) links to each other with mode selection switch (2), transmitting set (4) successively, described mode selection switch (2) also is connected with multi-angle infrared transmitter (3), and described multi-angle infrared transmitter (3) is made of transparent material shell (15) and 2 infrared emission tubes (16) of setting within it at least.
2. audio frequency amplifying emission device according to claim 1 is characterized in that described audio frequency amplifier (1) is the low noise integrated circuit.
3. audio frequency amplifying emission device according to claim 1 is characterized in that described mode selection switch (2) is one of electronic switch or mechanical switch.
4. audio frequency amplifying emission device according to claim 1, the transmitting power that it is characterized in that described transmitting set (4) is the frequency modulated radio signal of 2～15mW.
5. audio frequency amplifying emission device according to claim 4 is characterized in that described transmitting set (4) also can include the frequency stabilization circuit of quartz oscillator.
6. receiving system with audio frequency amplifying emission device coupling, it comprises radio reception amplifier (6), mode selection switch (11), volume control circuit (7), power amplifier (8), earphone (9), it is characterized in that described radio reception amplifier (6) successively with described mode selection switch (11), volume control circuit (7), power amplifier (8), earphone (9) links to each other, described mode selection switch (11) also connects infrared reception amplifier (5) successively, multi-angle infrared remote receiver (10), described multi-angle infrared remote receiver (10) is by transparent material shell (14) and its interior reflective tapered parts (12) are set, infrared receiving tube (13) constitutes, and the following cone angle of described reflective tapered parts (12) is corresponding with described infrared receiving tube (13).
7. receiving system according to claim 6 is characterized in that described multi-angle infrared remote receiver (10) is at least two, and it settles angle to be mutually 45～90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244116 CN2553569Y (en) | 2002-07-26 | 2002-07-26 | Audio-frequency amplified transmitter and receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244116 CN2553569Y (en) | 2002-07-26 | 2002-07-26 | Audio-frequency amplified transmitter and receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553569Y true CN2553569Y (en) | 2003-05-28 |
Family
ID=33716107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02244116 Expired - Fee Related CN2553569Y (en) | 2002-07-26 | 2002-07-26 | Audio-frequency amplified transmitter and receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553569Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888972A (en) * | 2018-09-26 | 2018-11-27 | 台山燊乐塑胶电子制造有限公司 | A kind of toy sword |
-
2002
- 2002-07-26 CN CN 02244116 patent/CN2553569Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888972A (en) * | 2018-09-26 | 2018-11-27 | 台山燊乐塑胶电子制造有限公司 | A kind of toy sword |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |