CN203261468U - One-piece multipurpose active sound box - Google Patents
One-piece multipurpose active sound box Download PDFInfo
- Publication number
- CN203261468U CN203261468U CN 201320305749 CN201320305749U CN203261468U CN 203261468 U CN203261468 U CN 203261468U CN 201320305749 CN201320305749 CN 201320305749 CN 201320305749 U CN201320305749 U CN 201320305749U CN 203261468 U CN203261468 U CN 203261468U
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- CN
- China
- Prior art keywords
- audio amplifier
- current input
- direct current
- over circuit
- sound box
- 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 relates to a one-piece multipurpose active sound box, comprising a sound box shell, a loudspeaker arranged in the sound box shell, a power amplifier module connected with the loudspeaker, a power supply module connected with the power amplifier module, and a display unit connected with the power supply module. The power supply module of the one-piece multipurpose active sound box comprises a direct current input converting circuit and an alternating current input converting circuit, wherein the direct current input converting circuit and the alternating current input converting circuit are connected with the power amplifier module, the alternating current input converting circuit is connected with an electrode of an alternating current input connector arranged on the sound box shell, the direct current input converting circuit is connected with an electrode in a direct current input connector arranged on the sound box shell, and the direct current input converting circuit and the alternating current input converting circuit are independent from each other. The active sound box is easy to find an applicable input and is good in versatility.
Description
Technical field
This area relates to a kind of audio amplifier, relates in particular to a kind of multiplex active audio amplifier of integral type that can either use AC power can use again DC power supply.
Background technology
Audio amplifier is the terminal of whole sound system, and its effect is that the audio frequency electric energy is converted to corresponding acoustic energy, and it is radiated the space.Common audio amplifier includes active audio amplifier and passive loudspeaker box, with respect to not with the passive loudspeaker box of power amplifier, active audio amplifier is a kind of audio amplifier that is built-in with the built-in power amplifying circuit, need plugged to provide power supply for the built-in power amplifying circuit, voice signal just can be worked after inputting audio amplifier by input electrode.Active audio amplifier is existing multiplex in the computer multi-media field, and some have the occasion (such as the electronic organ audio amplifier) of specific demand.Because with power amplifier, therefore active audio amplifier need to provide the power amplifier unit of inside enough power supply supports to work, common are at present the source audio amplifier, all be to use transformer or battery to carry out direct current supply mostly, the active audio amplifier that uses alternating current to power is more rarely arranged usually, still lack on the market and can namely can use alternating current can use galvanic active audio amplifier again.
The utility model content
The utility model is in order to overcome the shortcoming of prior art, to provide a kind of alternating current that can either use can use again the multiplex active audio amplifier of galvanic integral type.
For achieving the above object, the multiplex active audio amplifier of integral type of the present utility model has adopted following technical scheme: the multiplex active audio amplifier of integral type of the present utility model, comprise the audio amplifier shell, be located at the loud speaker in the audio amplifier shell, the power amplifier module that is connected with loud speaker, the supply module that is connected with power amplifier module, and the display unit that is connected with supply module, the multiplex active audio amplifier of this integral type with supply module include direct current input change-over circuit and exchange and input change-over circuit, this described direct current input change-over circuit and be connected and input change-over circuit and be connected with power amplifier module respectively, the electrode of set interchange input connector is connected on described interchange input change-over circuit and the audio amplifier shell, and the electrode that described direct current is inputted the direct current input connector on change-over circuit and the audio amplifier shell is connected.
In the multiplex active audio amplifier of integral type of the present utility model, described direct current input change-over circuit with exchange that to input change-over circuit be separate circuit.
In the multiplex active audio amplifier of integral type of the present utility model, described direct current input connector is USB connector commonly used, and direct voltage is+5V.
Beneficial effect: the multiplex active audio amplifier of integral type of the present utility model, owing to adopted above-mentioned technical scheme, therefore namely can input dc power work, directly access alternating current work commonly used, be more convenient for user's use, avoid producing the more situation of winding displacement because use transformer, and when using direct current to power, because used the supply power mode of the 5V of USB interface commonly used, therefore in use have good interchangeability, have more that universal whom is convenient to is to obtain the power supply source everywhere.
Below in conjunction with accompanying drawing the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.
Description of drawings
Fig. 1 is the schematic perspective view of a kind of embodiment of the utility model;
Fig. 2 is the schematic block circuit diagram of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description.
Please refer to illustrated in figures 1 and 2, structural representation for a kind of preferred embodiment of the multiplex active audio amplifier of integral type of the present utility model, in the middle of this preferred embodiment, the multiplex active audio amplifier 1 of this integral type, the audio amplifier shell, be located at the loud speaker in the audio amplifier shell, the power amplifier module that is connected with loud speaker, the supply module that is connected with power amplifier module, and the display unit that is connected with supply module, the multiplex active audio amplifier of this integral type with supply module include direct current input change-over circuit and exchange and input change-over circuit, this described direct current input change-over circuit and be connected and input change-over circuit and be connected with power amplifier module respectively, the electrode of set interchange input connector 2 is connected on described interchange input change-over circuit and the audio amplifier shell, the electrode of the direct current input connector 3 on described direct current input change-over circuit and the audio amplifier shell is connected, and described direct current is inputted change-over circuit and exchanged that to input change-over circuit be separate circuit.
Usually, the direct current input connector of audio amplifier of the present utility model has good versatility for USB connector commonly used, direct voltage is+the USB voltage of 5V.
Claims (3)
1. multiplex active audio amplifier of integral type, the multiplex active audio amplifier of this integral type comprises the audio amplifier shell, be located at the loud speaker in the audio amplifier shell, the power amplifier module that is connected with loud speaker, the supply module that is connected with power amplifier module, and the display unit that is connected with supply module, it is characterized in that: the multiplex active audio amplifier of this integral type with supply module include direct current input change-over circuit and exchange and input change-over circuit, this described direct current input change-over circuit and be connected and input change-over circuit and be connected with power amplifier module respectively, the electrode of set interchange input connector is connected on described interchange input change-over circuit and the audio amplifier shell, and the electrode that described direct current is inputted the direct current input connector on change-over circuit and the audio amplifier shell is connected.
2. the multiplex active audio amplifier of integral type according to claim 1 is characterized in that: described direct current input change-over circuit with exchange that to input change-over circuit be separate circuit.
3. the multiplex active audio amplifier of integral type according to claim 1 is characterized in that: described direct current input connector is USB connector commonly used, and direct voltage is+5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320305749 CN203261468U (en) | 2013-05-30 | 2013-05-30 | One-piece multipurpose active sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320305749 CN203261468U (en) | 2013-05-30 | 2013-05-30 | One-piece multipurpose active sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261468U true CN203261468U (en) | 2013-10-30 |
Family
ID=49473998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320305749 Expired - Fee Related CN203261468U (en) | 2013-05-30 | 2013-05-30 | One-piece multipurpose active sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261468U (en) |
-
2013
- 2013-05-30 CN CN 201320305749 patent/CN203261468U/en not_active Expired - Fee Related
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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: 20131030 Termination date: 20140530 |