CN204616083U - Panel speaker - Google Patents
Panel speaker Download PDFInfo
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- CN204616083U CN204616083U CN201520270546.9U CN201520270546U CN204616083U CN 204616083 U CN204616083 U CN 204616083U CN 201520270546 U CN201520270546 U CN 201520270546U CN 204616083 U CN204616083 U CN 204616083U
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Abstract
The utility model relates to audio amplifier manufacturing technology field, particularly relate to a kind of panel speaker, comprise phonation board, ring shaped conductive coil, soft magnet, voice coil loudspeaker voice coil, magnetic bias coil, swept resistance Rw, resistance R1, superaudio oscillating circuit and power amplification circuit, described ring shaped conductive coil is arranged on described phonation board, described soft magnet is with opening, phonation board is placed in this opening part, described soft magnet is wound with respectively voice coil loudspeaker voice coil and magnetic bias coil, described voice coil loudspeaker voice coil is connected with described overclocking oscillating circuit, described magnetic bias coil is connected with described power amplification circuit with resistance R1 by swept resistance Rw.The utility model has that frequency response is wide, power is large, distortion is little, build is thin, profile is random, structure is simple, easy to process, not cracky and without features such as magnetic disturbances.
Description
Technical field
The utility model relates to audio amplifier manufacturing technology field, particularly relates to a kind of panel speaker.
Background technology
Conventional loudspeakers promotes the fixing cone of a size and sounding with voice coil loudspeaker voice coil, and the structure and feature of himself determines loud speaker and can not realize panelized with miniaturized.Secondly, fixing vibrating basin diameter, make loud speaker passband very narrow, amplitude-frequency characteristic is very poor, and it is single-peak response that whole Frequency Response has on its mechanical resonant frequency point, causes Hi-Fi sound-box to have to realize with high, medium and low sound loud speaker frequency division compound mode.Voice coil loudspeaker voice coil is pusher, is again the some of sounding body, and the mechanical structure of himself and performance produce contradiction, particularly in hi-fi system, realize large dynamic range, then require that power wants large, high to the requirement of mechanical strength of voice coil loudspeaker voice coil like this, coil has to make some strong, but the machinery inertial of voice coil loudspeaker voice coil increases like this, and high frequency characteristics will decline greatly, in order to meet the needs of mechanical strength and high frequency characteristics simultaneously, voice coil loudspeaker voice coil is all operated in extreme environment usually, very easily burns.Therefore, with the Hi-Fi sound-box volume of conventional speaker manufacture is large, cost is high, poor reliability.
Utility model content
The purpose of this utility model is the deficiency overcoming above-mentioned technology, and provides a kind of panel speaker, low cost, and reliability is strong.
The utility model for achieving the above object, by the following technical solutions:
A kind of panel speaker, it is characterized in that: comprise phonation board, ring shaped conductive coil, soft magnet, voice coil loudspeaker voice coil, magnetic bias coil, swept resistance Rw, resistance R1, superaudio oscillating circuit and power amplification circuit, described ring shaped conductive coil is arranged on described phonation board, described soft magnet is with opening, phonation board is placed in this opening part, described soft magnet is wound with respectively voice coil loudspeaker voice coil and magnetic bias coil, described voice coil loudspeaker voice coil is connected with described overclocking oscillating circuit, and described magnetic bias coil is connected with described power amplification circuit with resistance R1 by swept resistance Rw.
Preferably, described power amplification circuit comprises resistance R, resistance RC, swept resistance RP1, swept resistance RP2, resistance Rb1, resistance Rb2, resistance Re, triode VT1, triode VT2, triode VT3, diode VD, electric capacity Co, electric capacity Ce, electric capacity C1, electric capacity C2; The positive pole of described electric capacity C1 is connected respectively with the base stage of described resistance Rb2, resistance Rb1, triode VT1 respectively, the other end of described resistance Rb2 is connected with one end of described swept resistance RP1, the other end ground connection of described resistance Rb1, the other end of described swept resistance RP1 is connected with the negative pole of electric capacity C2, the positive pole of described electric capacity C2 is connected with one end of described resistance R, resistance RC respectively, another termination power Vcc of described resistance R and the collector electrode of described triode VT2; The base stage of described triode VT2 is connected with one end of described resistance RC, swept resistance RP2 respectively; The other end of described swept resistance RP2 is connected with one end of described diode VD, the other end of described diode VD is connected with the collector electrode of described triode VT1, the base stage of triode VT3, the emitter of described triode VT2 is connected with the sliding end of electric capacity Co, swept resistance RP1, the collector electrode of triode VT3 respectively, the grounded emitter of described triode VT3; One end of the emitter difference connecting resistance Re and electric capacity Ce of described triode VT1, the other end ground connection respectively of described resistance Re and electric capacity Ce; Described electric capacity Co is connected with described resistance R1.
Preferably, described overclocking oscillating circuit adopts chip IC L8038.
The beneficial effects of the utility model are: the utility model has that frequency response is wide, power is large, distortion is little, build is thin, profile is random, structure is simple, easy to process, not cracky and without features such as magnetic disturbances.
(1) frequency response is wide.Owing to being embedded with the concentric conducting ring of multiple radial arrangement in loudspeaker vibration sounding dish mutually, the radius of each ring is different, each ring just has different mechanical resonant frequencies when independent role, the quantity of conducting ring is more, distribute more even, loud speaker amplitude-frequency characteristic is more smooth, no longer fixes in conventional loudspeakers pronunciation tray size and produces the amplitude-frequency characteristic of single crest; The outer internal diameter ratio of sounding dish is larger, and amplitude-frequency characteristic is wider; Be easy to the smooth amplitude-frequency characteristic that just can achieve on a loud speaker from 20Hz ~ 20kHz.
(2) power output is large.Because voice coil loudspeaker voice coil is fixed on magnetic circuit, it can do thicker, more solid, there is not traditional loudspeaker voice coil easily to burn, the phenomenon that Yi Zhenyu loosens, ring shaped conductive coil in pronunciation tray plays sound film reinforcement effect further, has stronger mechanical property than conventional loudspeakers tibial membrane, thus makes power output larger.
(3) distortion is little.Panel speaker adds a magnetic bias coil in magnetic circuit, suitable direct current or superaudio alternating current biasing electric current is added on magnetic bias coil during speaker operation, the audio frequency magnetic field in magnetic circuit is made to avoid the inelastic region of magnetization curve, audio signal magnetic field has almost been added on pronunciation tray without distortion, thus makes the distortion of this loud speaker very little.
(4) build is thin.Employ the pronunciation tray of plane in this loud speaker, therefore loud speaker can do very thin, the space needed for its thickness vibrates primarily of magnetic structure and pronunciation tray determines.
(5) configuration design is random.In this loud speaker, as long as by the centre bore of magnetic flux through pronunciation tray, to the shape not requirement of magnetic circuit, pronunciation tray not necessarily have to be circular, they all can be designed to arbitrary shape according to aesthstic with mechanical requirements, and the surface of pronunciation tray is the best shelter that various art drawing makes device.
(6) simple, easy to process, the not cracky of structure.In this loud speaker, magnetic structure is simple, and each several part quality of fit is less demanding, and voice coil loudspeaker voice coil, magnetic circuit, pronunciation tray are installed voluntarily by domestic consumer after can being carried out by product man.Because pronunciation tray employs multiple conducting ring type of drive, even if certain partially conductive ring damages, other rings still can normally work, and can not produce fatal impact to loud speaker.And traditional voice coil loudspeaker voice coil type of drive, once voice coil loudspeaker voice coil burns out, just can not continue again to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit theory diagrams of power amplification circuit in the utility model.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1, a kind of panel speaker, comprise phonation board 1, ring shaped conductive coil 2, soft magnet 3, voice coil loudspeaker voice coil 4, magnetic bias coil 5, swept resistance Rw, resistance R1, superaudio oscillating circuit 6 and power amplification circuit 7, described ring shaped conductive coil is arranged on described phonation board, described soft magnet is with opening, phonation board is placed in this opening part, described soft magnet is wound with respectively voice coil loudspeaker voice coil and magnetic bias coil, described voice coil loudspeaker voice coil is connected with described overclocking oscillating circuit, and described magnetic bias coil is connected with described power amplification circuit with resistance R1 by swept resistance Rw.
As shown in Figure 2, in the utility model, described power amplification circuit comprises resistance R, resistance RC, swept resistance RP1, swept resistance RP2, resistance Rb1, resistance Rb2, resistance Re, triode VT1, triode VT2, triode VT3, diode VD, electric capacity Co, electric capacity Ce, electric capacity C1, electric capacity C2; The positive pole of described electric capacity C1 is connected respectively with the base stage of described resistance Rb2, resistance Rb1, triode VT1 respectively, the other end of described resistance Rb2 is connected with one end of described swept resistance RP1, the other end ground connection of described resistance Rb1, the other end of described swept resistance RP1 is connected with the negative pole of electric capacity C2, the positive pole of described electric capacity C2 is connected with one end of described resistance R, resistance RC respectively, another termination power Vcc of described resistance R and the collector electrode of described triode VT2; The base stage of described triode VT2 is connected with one end of described resistance RC, swept resistance RP2 respectively; The other end of described swept resistance RP2 is connected with one end of described diode VD, the other end of described diode VD is connected with the collector electrode of described triode VT1, the base stage of triode VT3, the emitter of described triode VT2 is connected with the sliding end of electric capacity Co, swept resistance RP1, the collector electrode of triode VT3 respectively, the grounded emitter of described triode VT3; One end of the emitter difference connecting resistance Re and electric capacity Ce of described triode VT1, the other end ground connection respectively of described resistance Re and electric capacity Ce; Described electric capacity Co is connected with described resistance R1.Transistor VT1 is 3DG6, VT2 be 3DG12, VT3 is 3CG12.Wherein VT1 is for promoting level (also claiming preamplifier state), and work in Class A state, its collector current Ici is regulated by potentiometer RP1.A part of Icl flows through potentiometer RP2 and diode VD. provides bias voltage to VT2, VT3.VT2, VT3 are NPN and the PNP transistor of a pair parameter symmetry, and their composition complementary push-pulls are hired.Power amplifier.Because VT2, VT3 transistor is all connected into emitter follower form, therefore amplifier has the advantages such as output resistance is low, load capacity is strong, is suitable for rate of doing work output stage.Regulate RP2, VT2, VT3 can be made to obtain suitable quiescent current and work in first, Class B state, to overcome intermodulation distortion.
Current potential 1 r/2 of output mid point A is required time static, can realize by regulating RP1, an end due to RP1 is connected on A point, therefore AC and DC voltage Shunt negative feedback is introduced in circuit, on the one hand can the quiescent point of stabilizing amplifier, also improve amplifier nonlinearity distortion simultaneously.，
C2 and R forms boostrap circuit, for improving the amplitude of the positive half cycle of output voltage, to obtain large dynamic range.
In the utility model, described overclocking oscillating circuit adopts chip IC L8038.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. a panel speaker, it is characterized in that: comprise phonation board, ring shaped conductive coil, soft magnet, voice coil loudspeaker voice coil, magnetic bias coil, swept resistance Rw, resistance R1, superaudio oscillating circuit and power amplification circuit, described ring shaped conductive coil is arranged on described phonation board, described soft magnet is with opening, phonation board is placed in this opening part, described soft magnet is wound with respectively voice coil loudspeaker voice coil and magnetic bias coil, described voice coil loudspeaker voice coil is connected with described overclocking oscillating circuit, and described magnetic bias coil is connected with described power amplification circuit with resistance R1 by swept resistance Rw.
2. panel speaker according to claim 1, is characterized in that: described power amplification circuit comprises resistance R, resistance RC, swept resistance RP1, swept resistance RP2, resistance Rb1, resistance Rb2, resistance Re, triode VT1, triode VT2, triode VT3, diode VD, electric capacity Co, electric capacity Ce, electric capacity C1, electric capacity C2; The positive pole of described electric capacity C1 is connected respectively with the base stage of described resistance Rb2, resistance Rb1, triode VT1 respectively, the other end of described resistance Rb2 is connected with one end of described swept resistance RP1, the other end ground connection of described resistance Rb1, the other end of described swept resistance RP1 is connected with the negative pole of electric capacity C2, the positive pole of described electric capacity C2 is connected with one end of described resistance R, resistance RC respectively, another termination power Vcc of described resistance R and the collector electrode of described triode VT2; The base stage of described triode VT2 is connected with one end of described resistance RC, swept resistance RP2 respectively; The other end of described swept resistance RP2 is connected with one end of described diode VD, the other end of described diode VD is connected with the collector electrode of described triode VT1, the base stage of triode VT3, the emitter of described triode VT2 is connected with the sliding end of electric capacity Co, swept resistance RP1, the collector electrode of triode VT3 respectively, the grounded emitter of described triode VT3; One end of the emitter difference connecting resistance Re and electric capacity Ce of described triode VT1, the other end ground connection respectively of described resistance Re and electric capacity Ce; Described electric capacity Co is connected with described resistance R1.
3. panel speaker according to claim 1, is characterized in that: described overclocking oscillating circuit adopts chip IC L8038.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270546.9U CN204616083U (en) | 2015-04-29 | 2015-04-29 | Panel speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270546.9U CN204616083U (en) | 2015-04-29 | 2015-04-29 | Panel speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204616083U true CN204616083U (en) | 2015-09-02 |
Family
ID=53968603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520270546.9U Expired - Fee Related CN204616083U (en) | 2015-04-29 | 2015-04-29 | Panel speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204616083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811877A (en) * | 2015-04-29 | 2015-07-29 | 朝阳聚声泰（信丰）科技有限公司 | Planar loudspeaker |
-
2015
- 2015-04-29 CN CN201520270546.9U patent/CN204616083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811877A (en) * | 2015-04-29 | 2015-07-29 | 朝阳聚声泰（信丰）科技有限公司 | Planar loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160429 |