CN103702271A - Amplifier back panel - Google Patents
Amplifier back panel Download PDFInfo
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- CN103702271A CN103702271A CN201310684313.9A CN201310684313A CN103702271A CN 103702271 A CN103702271 A CN 103702271A CN 201310684313 A CN201310684313 A CN 201310684313A CN 103702271 A CN103702271 A CN 103702271A
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Abstract
The invention discloses an amplifier back panel, which comprises a panel main body (1) and an installing part (2) fixed on the outer periphery of the panel body (1) in a surrounding way. The amplifier back panel is characterized in that the panel main body (1) is provided with a wireless microphone receiving area (3), a signal input control area (4) consisting of a Bluetooth interface (4.1.1), an SD (Secure Digital) interface (4.1.2), a USB (Universal Serial Bus) interface (4.1.4), a 3.5mm socket (4.2.1) and an RCA socket (4.2.2) and a multifunctional socket (4.3.1), and an input power supply control area (5) in sequence from top to bottom. By adopting the structure of the amplifier back panel, a plurality of sound source input ways can be realized, and high universality is achieved; moreover, a plurality of amplifiers can be used together through an arranged signal output interface, so that the length of a connecting circuit is reduced. Moreover, a storage battery is provided, so that work without an external power supply can be realized.
Description
Technical field
The present invention relates to a kind of technical field of sound-box device, relate to particularly a kind of power amplifier rear board.
Background technology
In the art, described power amplifier is called again " sound amplifier ", and its effect is exactly the small signals amplification from source of sound or pre-amplifier, thereby promotes audio amplifier sound reproduction.By its purposes, can be divided into substantially professional power amplifier, civilian power amplifier and special power amplifier.This specialty power amplifier is used for meeting room, performance stage, hall, auditorium and all kinds of venue, and this civilian power amplifier is for TV, home theater and all kinds of Household multimedia equipment, special power amplifier more application in all kinds of alarms and vehicle audio.Be not difficult to find out thus, in our life, be flooded with power amplifier equipment miscellaneous, for we provide the abundant sound world.But meanwhile, the transmission means of its source of sound is but various, the special development along with modern science and technology, not only can but also can pass through bluetooth, infrared ray and wireless microphone transmission source of sound by USB flash disk, portable hard drive and SD card transmission source of sound, even if conventional wire transmission has also developed all kinds of joints, for example 3.5mm plug input, RCA input, TRS input and XLR input.Therefore the inconvenience that the power amplifier of this type of single input mode in the prior art will cause client to use.
And in the industry, because the purposes specific aim of power amplifier is stronger, obtain the Hi―quality Playback effect of low distortion, low noise, therefore, the scientific research personnel in industry often does one's utmost to pursue the lifting in performance, and has ignored the improvement in its versatility.And for common client, when the versatility problem of the input mode in the face of above-mentioned power amplifier, it often adopts the mode of conversion source of sound to solve, and is about to source of sound and is transferred on the memory device matching with this power amplifier input mode, then be input in power amplifier by this memory device.In addition, in the situation that not matching in the face of joint, often by an external connector converter, mate.Thus in the past for a long time, people produce a thinking inertia, and the power amplifier of different purposes different models is assumed as a matter of course different input modes, and has ignored it to the requirement in its versatility, and production firm also forms a kind of industry inertia, power amplifier is only focused on the lifting in its performance.
Summary of the invention
The technical problem to be solved in the present invention is, thereby a kind of good user-friendly power amplifier rear board of versatility that various tone sources input mode makes power amplifier that is provided with is provided.
Technical solution of the present invention is, provide a kind of power amplifier rear board with following structure: it comprises panel body and around the installation portion that is fixed on panel body outer peripheral edges, is provided with successively from top to bottom wireless microphone reception area, signal input control district and input power controlled area in this panel body.Described wireless microphone reception area comprise horizontally disposed two Wireless microphone receivers and with each self-corresponding antenna of described Wireless microphone receiver.Described signal input control district comprises the blue tooth interface being from left to right arranged in order by being located at below, wireless microphone reception area, SD interface, display, the MP3 module that USB interface forms, and be located at the first passage that this MP3 module below is from left to right arranged in order, second channel, third channel and control module, between described MP3 module and first passage, be provided with the first volume adjusting switch shared and that can switch back and forth between MP3 module and first passage, described second channel, third channel and control module are all provided with separately for regulating the volume adjusting switch of volume.Described input power controlled area comprises the supply socket of being located at main panel bottom, is located at signal input control district below for showing the battery capacity indication lamp of storage battery and for this storage battery being switched on and disconnecting the charge switch of control and for showing the charging indicator light whether charging.
As a modification of the present invention, described first passage comprises one for connecting 3.5mm socket and the RCA socket of 3.5mm plug.3.5mm plug be existing in comparatively conventional plug, therefore in the present invention, be provided with the input that 3.5 sockets that match are with it convenient to this type of 3.5mm plug, and comparatively conventional on existing television set be to input by RCA interface, so the present invention arranges a RCA socket too.
Further, described second channel and third channel be provided with respectively two identical for the multi-function jack that is connected TRS plug or XLR plug and the diverter switch of switching when the relatively different plugs of this multi-function jack are connected.By multi-function jack, can realize with TRS plug or XLR plug and being connected, be i.e. dual-purpose socket.And switch between the two by a diverter switch, described TRS plug is more is for being connected with DVD input, XLR plug is more for microphone input connection.
As a kind of preferred, described control module comprises echo control switch, high pitch control switch, bass control switch and total control switch.By control module, can realize the integrally-regulated control to echo, high bass and total volume, realize the best output effect of playing.
As another kind of improvement of the present invention, described battery capacity indication lamp is comprised of 3 signal lamps that show electric weight LOW lamp, 1 signal lamp, 2 signal lamps and Full Charge Capacity from small to large.In the present invention, carried savings battery, the broadcasting while being convenient to connect without external power supply, also prevents that the power amplifier that unexpected power-off causes from quitting work simultaneously.
As a kind of preferred, on described input power controlled area, be also provided with one for switching the voltage change-over switch of input voltage.
Further, described voltage change-over switch is divided into low-voltage shelves and the 220-240V high voltage shelves of 100-120V.By the voltage-regulation of two gears, can need to realize optimum voltage input according to client.
As a kind of preferred, on described input power controlled area, be also provided with one for the protection of the fuse of circuit.When voltage input peak value is excessive, by fuse, can effectively protect internal circuit of the present invention.
As last a kind of improvement of the present invention, on described input power controlled area, be also provided with a signal output interface.By this signal output, can realize many power amplifiers and connect, special for large-scale square and stage, power amplifier that need not be whole is all connected with source of sound, only needs, by all power amplifier series connection, to make circuit simple.
Adopt above structure, the present invention compared with prior art has the following advantages: technical scheme first of the present invention has comprised microphone wireless receiving, bluetooth reception, USB interface, SD card slot, common 3.5 sockets, RCA socket and for connecting the multi-function jack of TRS joint and XLR joint, therefore source of sound input mode of the present invention is more, be convenient to applications miscellaneous, highly versatile.Secondly technical scheme of the present invention also includes storage battery, therefore in shorter application scenario of some times, can directly by storage battery power supply, work, without external power supply, and prevent the situation of the unexpected power-off of external power source, avoid power amplifier because external power source disconnects quitting work of causing.Last the present invention is also provided with a signal output interface, and the series connection of being convenient to many power amplifiers is used.In addition, technical scheme of the present invention is also provided with the fuse of a protective circuit, avoids the voltage damage of the excessive power amplifier circuit causing suddenly of external power source.
Accompanying drawing explanation
Fig. 1 is the structural representation of power amplifier rear board.
Fig. 2 is the enlarged diagram of " A " in Fig. 1.
Fig. 3 is the enlarged diagram of " B " in Fig. 1.
Shown in figure: 1, panel body, 2, installation portion, 3, wireless microphone reception area, 3.1, Wireless microphone receiver, 3.2, antenna, 4, signal input control district, 4.1, MP3 module, 4.1.1, blue tooth interface, 4.1.2, SD interface, 4.1.3, display, 4.1.4, USB interface, 4.1.5, the first volume adjusting switch, 4.1.6, switching push button, 4.2, first passage, 4.2.1, 3.5mm socket, 4.2.2, RCA socket, 4.3, second channel, 4.3.1, multi-function jack, 4.3.2, diverter switch, 4.4, third channel, 4.5, control module, 4.5.1, echo control switch, 4.5.2, high pitch control switch, 4.5.3, bass control switch, 4.5.4, total control switch, 5, input power controlled area, 5.1, supply socket, 5.2, battery capacity indication lamp, 5.3, charge switch, 5.4, charging indicator light, 5.5, voltage change-over switch, 6, fuse, 7, signal output interface.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, a kind of power amplifier rear board of the present invention, comprise panel body (1) and around the installation portion (2) that is fixed on panel body (1) outer peripheral edges, it is characterized in that: in this panel body (1), being provided with successively from top to bottom wireless microphone reception area (3), signal input control district (4) and input power controlled area (5).
Described wireless microphone reception area (3) comprise two Wireless microphone receivers (3.1) that level is set up in parallel and with each self-corresponding antenna (3.2) of described Wireless microphone receiver.Described Wireless microphone receiver is on the market conventional wireless microphone receiving system, and this Wireless microphone receiver must comprise certain panel and button certainly, and this is routine techniques, at this, is not just described in detail.
Described signal input control district (4) comprises the MP3 module (4.1) forming by being located at blue tooth interface (4.1.1), SD interface (4.1.2), display (4.1.3), USB interface (4.1.4) that wireless microphone reception area (3) below is from left to right arranged in order, and is located at first passage (4.2), second channel (4.3), third channel (4.4) and the control module (4.5) being from left to right arranged in order below this MP3 module (4.1).The MP3 module 4.1 that this place refers to refers to that MP3player is a kind of module of audio compression techniques, namely in the present invention to the parts such as USB, blue tooth interface general designation.Same described first passage 4.2, second channel (4.3), third channel (4.4) and control module (4.5) represent respectively the join domain of correspondence position in diagram.Between described MP3 module (4.1) and first passage (4.2), be provided with the first volume adjusting switch (4.1.5) shared and that can switch back and forth between MP3 module (4.1) and first passage (4.2), described second channel (4.3), third channel (4.4) and control module (4.5) are all provided with separately for regulating the volume adjusting switch of volume.From diagram, be not difficult to find out all there is each self-corresponding volume adjusting switch except MP3 module 4.1 and first passage 4.2 share the first volume adjusting switch (4.1.5).Certainly, for the ease of described the first volume adjusting switch (4.1.5), control respectively MP3 module 4.1 and first passage 4.2, therefore in the top of this first volume adjusting switch (4.1.5), be also provided with a switching push button (4.1.6), by next for regulating the volume of MP3 module 4.1, on bullet for regulating the volume of first passage 4.2.
Particularly, described first passage (4.2) comprises one for connecting 3.5 sockets (4.2.1) and the RCA socket (4.2.2) of 3.5mm plug.This 3.5mm plug refers to that diameter is the coaxial audio jack of 3.5mm, and described 3.5mm socket 4.2.1 matches with this coaxial audio jack, and described RCA socket 4.2.2 is called lotus flower socket, is used for the audio transmission of television set, video disc player.
Described second channel (4.3) and third channel (4.4) be provided with respectively two identical for the multi-function jack (4.3.1) that is connected TRS plug or XLR plug and the diverter switch (4.3.2) of switching when the relatively different plugs of this multi-function jack (4.3.1) are connected.That is to say that this second channel 4.3 and third channel 4.4 are two identical passages.In described second channel, be provided with a multi-function jack 4.3.1, this multi-function jack 4.3.1 is dual-purpose socket, can be connected with XLR plug with TRS plug respectively.The TRS plug that this place refers to is commonly called as " large three cores " in industry, and it is used for the connection of the output equipments such as earphone, and described XLR plug is referred to as card agriculture joint, and the input that is used for microphone connects.Certainly, when connecting different plug, described multi-function jack 4.3.1 must need a diverter switch 4.3.2.When multi-function jack 4.3.1 connects TRS plug, while realizing earphone output connection, the diverter switch of upspringing 4.3.2, " LINE " indicating in corresponding diagram 1, and when multi-function jack 4.3.1 connection XLR plug is realized microphone input connection, press diverter switch 4.3.2, " MIC " indicating in corresponding diagram 1.
Described control module (4.5) comprises echo control switch (4.5.1), high pitch control switch (4.5.2), bass control switch (4.5.3) and total control switch (4.5.4).As shown in fig. 1, this control module 4.5 is positioned at the lower right corner in signal input control district (4), and these four control switchs become the setting of sphere of movements for the elephants type.
Described input power controlled area (5) comprises the supply socket (5.1) of being located at panel body (1) bottom, is located at signal input control district (4) below for showing the battery capacity indication lamp (5.2) of storage battery and for this storage battery being switched on and disconnecting the charge switch (5.3) of control and for showing the charging indicator light (5.4) whether charging.Described battery capacity indication lamp (5.2) is comprised of 3 signal lamps that show electric weight LOW lamp, 1 signal lamp, 2 signal lamps and Full Charge Capacity from small to large.In addition, on described input power controlled area (5), be also provided with one for switching the voltage change-over switch (5.5) of input voltage.Refer to that particularly voltage change-over switch (5.5) is divided into low-voltage shelves and the 220-240V high voltage shelves of 100-120V, a minute gear of realizing input supply voltage regulates, and meets the requirement of different voltage inputs.
Operation principle of the present invention is such: when being accessed by external power source, external power source is plugged in supply socket 5.1, and select corresponding input voltage gear by voltage change-over switch 5.5, then external sound source is connected with the corresponding interface in signal input control of the present invention district 4, completes power amplifier and connect.When battery capacity indication lamp 5.2 shows that accumulator electric-quantity is lower, open charge switch 5.3, charging indicator light 5.4 lights expression and charges, and completes thus the charging process of storage battery when realizing power amplifier work.Certainly in the situation that charging is saturated, also can open charge switch 5.3, for preventing that the power amplifier that the unexpected power-off of external power source causes from quitting work.That is to say, when the unexpected power-off of external power source, storage battery continues power supply, and power amplifier is worked on.
Finally it is worth mentioning that, in the present invention, in described input power controlled area (5), be also provided with a fuse 6, the lower right corner of panel body 1 in diagram namely, is designated the parts of " FUSE ".In addition, as shown in FIG., the right side of battery capacity indication lamp 5.2 is also provided with one and is marked with the signal output interface 7 of " LINE OUT ".In the time of practical many power amplifiers of needs, can by this signal output interface 7, realize the series connection of many power amplifiers, need not make whole power amplifiers all be connected with audiogenic device.Special in large-scale stage or square, be often provided with tens of even up to a hundred power amplifiers, and audiogenic device is often fixed on a position, this just caused required power amplifier and the line between audiogenic device intricate.And the present invention can be that connection is simple to the full extent by this signal output interface 7.But the series connection between the power amplifier that this place refers to does not refer to the series connection on its circuit, just the opposite, the circuit of described each power amplifier is to realize parallel connection, be that signal input interface is directly connected with this signal output interface 7, avoid because circuit in single power amplifier damages cannot the working of the whole power amplifiers that cause.After all parts layout of power amplifier rear board of the present invention is fixed, its internal circuit with it each function is gone corresponding.This circuit connection is the power amplifier circuit of existing routine.At this, just do not elaborated.
In sum, the present invention is compared with prior art, its advantage, the diversity of input pattern signal, thus realize the versatility for different source of sound inputs of the present invention, and its layout is more reasonable, avoided the staggered winding of a plurality of lines, its power line is provided with least significant end, can avoid more big and heavy power line, touches and interferes with the joint of respectively pegging graft.In addition, which is provided with storage battery, therefore can in the situation that there is no external power source, not work on, and the series connection having realized between a plurality of power amplifiers by a signal output interface 7 used, so avoided power amplifier to be all connected the complex circuit causing with audiogenic device.Finally, set up a fuse, avoided the infringement to power amplifier internal wiring and each electronic component.
The foregoing is only preferred embodiment of the present invention, not for limiting the scope of the invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a power amplifier rear board, comprise panel body (1) and around the installation portion (2) that is fixed on panel body (1) outer peripheral edges, it is characterized in that: in this panel body (1), being provided with successively from top to bottom wireless microphone reception area (3), signal input control district (4) and input power controlled area (5);
Described wireless microphone reception area (3) comprise two Wireless microphone receivers (3.1) that level is set up in parallel and with each self-corresponding antenna (3.2) of described Wireless microphone receiver;
Described signal input control district (4) comprises the blue tooth interface (4.1.1) being from left to right arranged in order by being located at below, wireless microphone reception area (3), SD interface (4.1.2), display (4.1.3), the MP3 module (4.1) that USB interface (4.1.4) forms, and be located at the first passage (4.2) that this MP3 module (4.1) below is from left to right arranged in order, second channel (4.3), third channel (4.4) and control module (4.5), between described MP3 module (4.1) and first passage (4.2), be provided with the first volume adjusting switch (4.1.5) shared and that can switch back and forth between MP3 module (4.1) and first passage (4.2), described second channel (4.3), third channel (4.4) and control module (4.5) are all provided with separately for regulating the volume adjusting switch of volume,
Described input power controlled area (5) comprises the supply socket (5.1) of being located at panel body (1) bottom, is located at signal input control district (4) below for showing the battery capacity indication lamp (5.2) of storage battery and for this storage battery being switched on and disconnecting the charge switch (5.3) of control and for showing the charging indicator light (5.4) whether charging.
2. a kind of power amplifier rear board according to claim 1, is characterized in that: described first passage (4.2) comprises one for connecting 3.5mm socket (4.2.1) and the RCA socket (4.2.2) of 3.5mm plug.
3. a kind of power amplifier rear board according to claim 2, is characterized in that: described second channel (4.3) and third channel (4.4) be provided with respectively two identical for the multi-function jack (4.3.1) that is connected TRS plug or XLR plug and the diverter switch (4.3.2) of switching when the relatively different plugs of this multi-function jack (4.3.1) are connected.
4. a kind of power amplifier rear board according to claim 3, is characterized in that: described control module (4.5) comprises echo control switch (4.5.1), high pitch control switch (4.5.2), bass control switch (4.5.3) and total control switch (4.5.4).
5. a kind of power amplifier rear board according to claim 4, is characterized in that: described battery capacity indication lamp (5.2) is comprised of 3 signal lamps that show electric weight LOW lamp, 1 signal lamp, 2 signal lamps and Full Charge Capacity from small to large.
6. a kind of power amplifier rear board according to claim 5, is characterized in that: on described input power controlled area (5), be also provided with one for switching the voltage change-over switch (5.5) of input voltage.
7. a kind of power amplifier rear board according to claim 6, is characterized in that: described voltage change-over switch (5.5) is divided into low-voltage shelves and the 220-240V high voltage shelves of 100-120V.
8. a kind of power amplifier rear board according to claim 7, is characterized in that: on described input power controlled area (5), be also provided with a fuse for the protection of circuit (6).
9. a kind of power amplifier rear board according to claim 8, is characterized in that: on described input power controlled area (5), be also provided with a signal output interface (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684313.9A CN103702271B (en) | 2013-12-13 | 2013-12-13 | A kind of amplifier back panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684313.9A CN103702271B (en) | 2013-12-13 | 2013-12-13 | A kind of amplifier back panel |
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| Publication Number | Publication Date |
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| CN103702271A true CN103702271A (en) | 2014-04-02 |
| CN103702271B CN103702271B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310684313.9A Active CN103702271B (en) | 2013-12-13 | 2013-12-13 | A kind of amplifier back panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826203A (en) * | 2015-04-12 | 2015-08-12 | 陈春敏 | Respirator used for respiratory medicine |
| CN110769337A (en) * | 2019-10-24 | 2020-02-07 | 上海易和声学科技有限公司 | Active array sound post and sound equipment system |
| CN111345947A (en) * | 2018-12-21 | 2020-06-30 | 沈阳新松机器人自动化股份有限公司 | Semi-automatic wheelchair controller |
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| US6011852A (en) * | 1995-10-19 | 2000-01-04 | Howard; Albert R. | Audio power amplifier device for micro-computers |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103702271B (en) | 2017-06-30 |
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