CN2622977Y - Broadcast public address receiver - Google Patents
Broadcast public address receiver Download PDFInfo
- Publication number
- CN2622977Y CN2622977Y CN 03225212 CN03225212U CN2622977Y CN 2622977 Y CN2622977 Y CN 2622977Y CN 03225212 CN03225212 CN 03225212 CN 03225212 U CN03225212 U CN 03225212U CN 2622977 Y CN2622977 Y CN 2622977Y
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- CN
- China
- Prior art keywords
- signal input
- amplifier
- signal
- input apparatus
- utility
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- 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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- Circuit For Audible Band Transducer (AREA)
- Amplifiers (AREA)
Abstract
The utility model relates to broadcast equipment, in particular to a multifunctional sound amplifier, which mainly comprises a signal input device, a function selection change-over arrangement, an amplifier and a tone volume regulator, wherein, the signal input device is connected with the input end of the amplifier through the function selection change-over arrangement, while the output end of the amplifier is connected with an audio load. The utility model is characterized in that: a computer CD-ROM is directly arranged on the multifunctional sound amplifier to be used as one of the signal input devices of multifunctional sound amplifier Except for possessing functions of common broadcast sound amplifier and playing CD or VCD, the utility model also has the advantages of high error correction capacity, low failure rate, high shockproof ability and low cost.
Description
Technical field: the utility model relates to a kind of broadcasting equipment, specifically is a kind of multi-functional sound amplifier.
Background technology: existing broadcast loud-speaker; mainly be made up of signal input apparatus, function selecting conversion equipment, signal and power amplifier, protective circuit and tonal volume adjusting device etc., signal input apparatus generally comprises microphone access device and audio signal reception device etc.For signal input apparatus, have also set up CD, VCD machine or in establish CD, Apparatus for video CD is used for the play CD video disc.But, common CD, when Apparatus for video CD is used for broadcast loud-speaker, have that error correcting capability is low, failure rate is high, not shockproof, shortcomings such as complicated, poor anti jamming capability and cost height are installed.
Summary of the invention: the purpose of this utility model is to overcome common CD, Apparatus for video CD is used for the shortcoming that broadcast loud-speaker produces, but the device of a kind of normal play CD, VCD video disc is provided, as the broadcast loud-speaker of one of signal input apparatus of broadcast loud-speaker.
The realization of the utility model purpose is that Computer optical disc drive (CD-ROM) directly is loaded on broadcast loud-speaker, or will design on the broadcast loud-speaker panel after the control section change, but makes it the play CD video disc, and other loads onto and separates pressing plate, can play the VCD video disc.
The utility model; comprise power circuit; signal input apparatus; the function selecting conversion equipment; signal and power amplifier and protective circuit and tonal volume adjusting device; signal input apparatus links to each other with the input of signal and power amplifier by the function selecting conversion equipment; the output of signal and power amplifier connects the sound equipment load; signal input apparatus comprises microphone device and audio signal reception device; it is characterized by: signal input apparatus also comprises the CD-ROM playing device; the audio output linkage function of CD-ROM playing device is selected conversion equipment, and the CD-ROM playing device is installed on the panel of sound amplifier.
The utility model, except the function that possesses common broadcast loud-speaker, play CD or VCD video disc also have following advantage: (1) error correcting capability height, general video disc be the energy normal play all; (2) failure rate is low, and is durable in use; (3) shake-proof ability height can normally use at the volley, is particularly suitable for the mobile broadcast car and uses; (4) install simply, after CD-ROM drive is fixed, connect with the mains, pick out audio frequency and get final product; (5) antijamming capability is strong: (6) cost is low, and cost has only the 50-70% of general CD, VCD parts.
Description of drawings: Fig. 1 is the functional-block diagram of broadcast loud-speaker embodiment, and Fig. 2 is the panel schematic diagram.
Among the figure, 1, microphone device 11, microphone jack 12, microphone adjusting knob 2, audio signal reception device 21, radio reception tuning knob 3, CD-ROM playing device 4, function selecting conversion equipment 41, function selection switch 5, signal and power amplifier 6, protective circuit 7, tonal volume adjusting device 71, volume adjustment knob 72, tone adjusting knob 8, sound equipment load 9, power circuit 91, mains switch 10, panel.
Embodiment: with reference to accompanying drawing; this broadcast loud-speaker; comprise power circuit 9, signal input apparatus, function selecting conversion equipment 4, signal and power amplifier 5 and protective circuit 6 and tonal volume adjusting device 7; signal input apparatus links to each other with the input of signal and power amplifier by the function selecting conversion equipment; the output of signal and power amplifier connects sound equipment load 8; signal input apparatus comprises microphone device 1, audio signal reception device 2 and CD-ROM playing device 3, and the audio output linkage function of CD-ROM playing device is selected conversion equipment.This routine CD-ROM playing device can be selected ready-made Computer optical disc drive accessory for use, and the CD-ROM playing device is installed on the panel 10 of sound amplifier.The panel setting of present embodiment as shown in Figure 2.
Present embodiment is except that the CD-ROM playing device, and the settings of all the other each device device corresponding with existing broadcast loud-speaker is same or similar.
Claims (1)
1; a kind of broadcast loud-speaker; comprise power circuit (9); signal input apparatus; function selecting conversion equipment (4); signal and power amplifier (5) and protective circuit (6) and tonal volume adjusting device (7); signal input apparatus links to each other with the input of signal and power amplifier by the function selecting conversion equipment; the output of signal and power amplifier connects sound equipment load (8); signal input apparatus comprises microphone device (1) and audio signal reception device (2); it is characterized by: signal input apparatus also comprises CD-ROM playing device (3); the audio output linkage function of CD-ROM playing device is selected conversion equipment, and the CD-ROM playing device is installed on the panel (10) of sound amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225212 CN2622977Y (en) | 2003-04-12 | 2003-04-12 | Broadcast public address receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225212 CN2622977Y (en) | 2003-04-12 | 2003-04-12 | Broadcast public address receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622977Y true CN2622977Y (en) | 2004-06-30 |
Family
ID=34245878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03225212 Expired - Fee Related CN2622977Y (en) | 2003-04-12 | 2003-04-12 | Broadcast public address receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622977Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702271A (en) * | 2013-12-13 | 2014-04-02 | 宁波中荣声学科技有限公司 | Amplifier back panel |
-
2003
- 2003-04-12 CN CN 03225212 patent/CN2622977Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702271A (en) * | 2013-12-13 | 2014-04-02 | 宁波中荣声学科技有限公司 | Amplifier back panel |
| CN103702271B (en) * | 2013-12-13 | 2017-06-30 | 宁波中荣声学科技有限公司 | A kind of amplifier back panel |
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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 |