CN203301716U - Microphone amplifier - Google Patents
Microphone amplifier Download PDFInfo
- Publication number
- CN203301716U CN203301716U CN2013202992002U CN201320299200U CN203301716U CN 203301716 U CN203301716 U CN 203301716U CN 2013202992002 U CN2013202992002 U CN 2013202992002U CN 201320299200 U CN201320299200 U CN 201320299200U CN 203301716 U CN203301716 U CN 203301716U
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- CN
- China
- Prior art keywords
- amplifying circuit
- circuit
- level
- microphone amplifier
- signal output
- 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 provides a microphone amplifier comprising a panel (1), an upper cover (2), a circuit board (3) and a base (4). The panel (1) is provided with buttons (7) for function and gear adjustment, the circuit board (3) is arranged in a space formed by the panel (1), the upper cover (2) and the base (4), and the circuit board (3) includes an amplifying circuit composed of class-A amplifying circuits. The microphone amplifier provided by the embodiment of the utility model has the characteristics of being simple in structure, convenient in replacement and repair, and safe and reliable.
Description
Technical field
The utility model relates to a kind of microphone amplifier, belongs to the audio frequency apparatus technical field.
Background technology
Microphone amplifier is the equipment that a kind of signal of microphone input amplifies, and purpose is the sound that will obtain better tone color.Existing microphone amplifier except signal amplifies, has often possessed parameter equilibrium, compressor reducer, unreal to functions such as power supplies.But, due to increasing of function, also cause the structure of microphone amplifier more complicated, and easily damage, change and all comparatively inconvenience of maintenance.
Summary of the invention
The utility model is the complex structure that solves existing microphone amplifier existence, easy damage, replacing and repairs comparatively inconvenient problem, and then a kind of microphone amplifier is provided.For this reason, the utility model provides following technical scheme:
A kind of microphone amplifier comprises: panel, upper cover, wiring board and base; Be provided with the button that function and gear are regulated on panel, wiring board is arranged in the space that is comprised of panel, upper cover and base, and wiring board comprises the amplifying circuit that is comprised of the Class A amplifying circuit.
The utility model embodiment provides a kind of microphone amplifier, have simple in structure, change and repair for convenience of, safe and reliable characteristics.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the microphone amplifier that provides of embodiment of the present utility model;
Fig. 2 is the structural representation of breaking of the microphone amplifier that provides of embodiment of the present utility model;
Fig. 3 is the modular structure schematic diagram of the wiring board that provides of embodiment of the present utility model;
Fig. 4 is the structural representation of the incoming level indicating circuit that provides of embodiment of the present utility model;
Fig. 5 is the structural representation of the output level indicating circuit that provides of embodiment of the present utility model;
Fig. 6 is the structural representation of the input-gain control circuit that provides of embodiment of the present utility model;
Fig. 7 is the structural representation of the embodiment of the present utility model first order amplifying circuit, second level amplifying circuit and the third level amplifying circuit that provide.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment that obtains, and all belong to the scope of the utility model protection.
This embodiment provides a kind of microphone amplifier, as depicted in figs. 1 and 2, comprising: panel 1, upper cover 2, wiring board 3 and base 4; Be provided with the button 7 that function and gear are regulated on panel 1, wiring board 3 is arranged in the space that is comprised of panel 1, upper cover 2 and base 4, and wiring board 3 comprises the amplifying circuit that is comprised of the Class A amplifying circuit.
Particularly, panel 1 is positioned at the front end of microphone amplifier, indicates the function of each button and the adjusting of gear.The material of upper cover 2 can be cold-reduced sheet, plays the inner electric elements of protection.Base 4, as the support of microphone amplifier, can comprise foot pad and fixed head 6, and foot pad is fixed on the bottom of base 4, and fixed head 6 is fixedly connected with upper cover 2 by screw 5 with base 4.The material of foot pad can be rubber, plays a part anti-skidding, shockproof.
concrete, as shown in Figures 3 to 6, wiring board 3 comprises input interface, input-gain control circuit, first order amplifying circuit, second level amplifying circuit, third level amplifying circuit, incoming level indicating circuit, power control circuit, output level indicating circuit and output interface, the signal output part of described input interface is connected with the signal input part of described input-gain control circuit, the signal output part of described input-gain control circuit is connected with the signal input part of described first order amplifying circuit, the level indicating signal output part of described first order amplifying circuit is connected with the signal input part of described incoming level indicating circuit, the amplifying signal output of described first order amplifying circuit is connected with the signal input part of described second level amplifying circuit, the amplifying signal output of described second level amplifying circuit is connected with the signal input part of described third level amplifying circuit, the level indicating signal output part of described third level amplifying circuit is connected with the signal input part of described output level indicating circuit, the amplifying signal output of described third level amplifying circuit is connected with described output interface, the power control signal output of described power control circuit and first order amplifying circuit, second level amplifying circuit is connected the power control signal input and is connected with third level amplifying circuit.
The large unwrapping wire road of the microphone amplifier that this embodiment provides is all completed by the Class A amplifying circuit, because class A amplifier is without intermodulation distortion, it is mainly even-order harmonic in harmonic component, abundant in the sense of hearing baritone, middle pitch is warm, and high pitch is clear, and stereovision is good, likable, and can regulate corresponding parameter equilibrium, compressor reducer, unreal to functions such as power supplies by button.
The technical scheme that adopts this embodiment to provide, have simple in structure, change and repair for convenience of, safe and reliable characteristics.
The above; it is only the better embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model embodiment discloses; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (6)
1. a microphone amplifier, is characterized in that, comprising: panel (1), upper cover (2), wiring board (3) and base (4); Be provided with the button (7) that function and gear are regulated on panel (1), wiring board (3) is arranged in the space that is comprised of panel (1), upper cover (2) and base (4), and wiring board (3) comprises the amplifying circuit that is comprised of the Class A amplifying circuit.
2. microphone amplifier according to claim 1, is characterized in that, the material of upper cover (2) is cold-reduced sheet.
3. microphone amplifier according to claim 1, it is characterized in that, base (4) comprises foot pad and fixed head (6), and foot pad is fixed on the bottom of base (4), and fixed head (6) is fixedly connected with upper cover (2) by screw (5) with base (4).
4. microphone amplifier according to claim 3, is characterized in that, the material of foot pad is rubber.
5. microphone amplifier according to claim 1, it is characterized in that, wiring board (3) comprises input interface, input-gain control circuit, first order amplifying circuit, second level amplifying circuit, third level amplifying circuit, incoming level indicating circuit, output level indicating circuit and output interface, the signal output part of described input interface is connected with the signal input part of described input-gain control circuit, the signal output part of described input-gain control circuit is connected with the signal input part of described first order amplifying circuit, the level indicating signal output part of described first order amplifying circuit is connected with the signal input part of described incoming level indicating circuit, the amplifying signal output of described first order amplifying circuit is connected with the signal input part of described second level amplifying circuit, the amplifying signal output of described second level amplifying circuit is connected with the signal input part of described third level amplifying circuit, the level indicating signal output part of described third level amplifying circuit is connected with the signal input part of described output level indicating circuit, the amplifying signal output of described third level amplifying circuit is connected with described output interface.
6. microphone amplifier according to claim 5, it is characterized in that, wiring board also (3) comprises power control circuit, and the power control signal output of described power control circuit is connected the power control signal input and is connected with first order amplifying circuit, second level amplifying circuit and third level amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202992002U CN203301716U (en) | 2013-05-28 | 2013-05-28 | Microphone amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202992002U CN203301716U (en) | 2013-05-28 | 2013-05-28 | Microphone amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301716U true CN203301716U (en) | 2013-11-20 |
Family
ID=49577692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202992002U Expired - Fee Related CN203301716U (en) | 2013-05-28 | 2013-05-28 | Microphone amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579209A (en) * | 2014-12-22 | 2015-04-29 | 宁波市鄞州奥创电子有限公司 | Signal compression circuit and sound recording microphone signal compressor |
-
2013
- 2013-05-28 CN CN2013202992002U patent/CN203301716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579209A (en) * | 2014-12-22 | 2015-04-29 | 宁波市鄞州奥创电子有限公司 | Signal compression circuit and sound recording microphone signal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140528 |