CN202121758U - Low-voltage high-power reactive loudspeaker - Google Patents
Low-voltage high-power reactive loudspeaker Download PDFInfo
- Publication number
- CN202121758U CN202121758U CN2011202375193U CN201120237519U CN202121758U CN 202121758 U CN202121758 U CN 202121758U CN 2011202375193 U CN2011202375193 U CN 2011202375193U CN 201120237519 U CN201120237519 U CN 201120237519U CN 202121758 U CN202121758 U CN 202121758U
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- power amplifier
- loudspeaker
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Abstract
The utility model discloses a low-voltage high-power reactive loudspeaker, which comprises a pre-circuit, a power amplifier unit and a loudspeaker, wherein the pre-circuit, the power amplifier and the loudspeaker are sequentially connected in a communicated manner. At least two independent winding sets are wound on at least one voice coil of the loudspeaker, each winding is connected with the pre-circuit through the power amplifier unit, the power amplifier unit comprises a plurality of single-ended power amplifiers or bridged power amplifier circuits in one-to-one correspondence to the windings, each winding is connected with the pre-circuit through one single-ended power amplifier or bridged power amplifier circuit, and two connecting terminals for being connected two output ends of each single-ended power amplifier or bridged power amplifier circuit is led out of a support of the loudspeaker from the corresponding winding. By means of the low-voltage high-power reactive loudspeaker, the problem that the low-voltage active loudspeaker is low in output power is solved, power of the reactive loudspeaker powered via low voltage is doubled without increasing power supply voltage, and accordingly the purpose of increasing output power and sound pressure output is achieved.
Description
Technical field
The utility model relates to a kind of electroacoustic apparatus field, relates in particular to a kind of active audio amplifier of low-voltage high-power.
Background technology
The active audio amplifier of existing low voltage power supply all adopts a power amplifier to drive a loud speaker, and little because of the output of low-voltage power amplifier power, causes the voice output acoustic pressure little.Desire improves the power output of system; Operating voltage that must be through improving power amplifier with make amplifying device work in the realization of getting off of limiting current situation; Therefore, very high for the performance requirement of the processing performance of power amplification device and components and parts, receive conditionality bigger; And cost is high, and the effect that amplifies is also undesirable.
The utility model content
The purpose of the utility model is to provide a kind of active audio amplifier that under the condition of low voltage power supply, makes the low-voltage high-power that power output is multiplied.
For realizing above-mentioned purpose; The active audio amplifier of said low-voltage high-power; Comprise front stage circuits, power amplification unit and loud speaker that communication in order connects; Be characterized in, be wound with independently winding of at least two groups on the voice coil loudspeaker voice coil of at least one loud speaker, each said winding connects front stage circuits through power amplification unit respectively.
Preferably, said power amplification unit comprises and a plurality of one to one single-ended power amplifiers of each winding that each said winding connects front stage circuits through a said single-ended power amplifier respectively.
Preferably, each said winding is drawn two binding posts that are used to connect single-ended power amplifier and ground on the support of its said loud speaker.
Preferably, said power amplification unit comprises and a plurality of one to one bridge-type power amplifiers of each winding that each said winding connects front stage circuits through a said bridge-type power amplifier respectively; Two outputs of said bridge-type power amplifier are connected in parallel on the two ends with the corresponding winding of this bridge-type power amplifier.
Preferably, each said winding is drawn two binding posts that are used to connect two outputs of bridge-type power amplifier on the support of its said loud speaker.
Preferably, the working power voltage of the active audio amplifier of said low-voltage high-power is smaller or equal to 9V.
The beneficial effect of the utility model is; The active audio amplifier of said low-voltage high-power has solved the little problem of active audio amplifier power output of low-voltage; Can let the active audio amplifier power of low voltage power supply be multiplied and need not increase supply power voltage, increase power output and the purpose that increases acoustic pressure output thereby reach.
Description of drawings
Fig. 1 shows the structural representation of the voice coil loudspeaker voice coil that is wound with a plurality of windings.
Fig. 2 shows the structural representation of loud speaker, is wound with two windings on the voice coil loudspeaker voice coil that loud speaker has.
Fig. 3 shows first embodiment of the circuit theory diagrams that a loud speaker is connected with front stage circuits.
Fig. 4 shows second embodiment of the circuit theory diagrams that a loud speaker is connected with front stage circuits.
The circuit theory diagrams of the active audio amplifier of two sound channels about Fig. 5 shows and only has.
Two sound channels and have the circuit theory diagrams of the active audio amplifier of source of sound treatment circuit about Fig. 6 shows and only has.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation:
The working power voltage of the active audio amplifier of the said low-voltage high-power of the utility model comprises relying on lithium battery that working power voltage is provided that promptly working power voltage is the situation of 3.7V smaller or equal to 9V.
As depicted in figs. 1 and 2; The working power voltage of the active audio amplifier of said low-voltage high-power is smaller or equal to 9V, and its loud speaker that has 30 comprises outstanding limit 1, bright and beautiful silk thread 2, binding post 3, drum paper 4, voice coil loudspeaker voice coil 5, washer 6, magnet 7, T iron 8, plays structures such as ripple 9, support 11, dust cap 12.Only be wound with one group of winding 51 on the voice coil loudspeaker voice coil 5 of existing working power voltage less than the loud speaker that active audio amplifier had 30 of 9V; This winding 51 is drawn binding post 3 on support 11; To connect a power amplifier of active audio amplifier set inside; Sound source signal inputs to power amplifier after through signal processing and control circuit 40; Amplify later audio signal and be transformed into voice signal through loud speaker 30, the gross power that is arranged so that output of the power amplifier that existing active audio amplifier is inner is limited, can not satisfy the demand that low-voltage is imported high-power output.The active audio amplifier of the described low-voltage high-power of the utility model can comprise a plurality of loud speakers 30 of corresponding L channel, R channel, subwoofer channel, back L channel, back R channel, center channels etc.; Wherein be wound with independently winding 51 of at least two groups on the voice coil loudspeaker voice coil 5 at least one loud speaker 30; Be wound with two groups of independently windings 51 on the skeleton 52 of the voice coil loudspeaker voice coil 5 of a loud speaker 30 as depicted in figs. 1 and 2; These two groups independently winding 51 from voice coil loudspeaker voice coil 5 draw two groups the lead-in wire 53,54; These two groups lead-in wires 53,54 are drawn two separate binding posts 3 from support 11 both sides of loud speaker 30 respectively, to connect the front stage circuits of active audio amplifier set inside.
Fig. 3 shows first embodiment of the circuit theory diagrams that a loud speaker 30 is connected with front stage circuits; A plurality of windings 51 on corresponding loud speaker 30 voice coil loudspeaker voice coils 5 connect front stage circuits through power amplification unit respectively, and said power amplification unit comprises and each winding single-ended power amplifier 10 of a plurality of routines (like OTL, OCL) one to one.Circuit theory diagrams as shown in Figure 3; Be wound with four groups of independently windings on the voice coil loudspeaker voice coil 5 of one loud speaker 30; Every group of winding drawn two binding posts 3 on the support 11 of loud speaker 30; Wherein each winding 51 binding post 3 is connected in four inner independently single-ended power amplifiers 10 of active audio amplifier respectively, another binding post 3 equal ground connection, and said four independently single-ended power amplifiers 10 connect the signal processing and the control circuit 40 of active audio amplifier respectively.When loud speaker 30 shown in Figure 3 is worked; Audio signal transfers to respectively in said four independently single-ended power amplifiers 10 through the processing of signal processing and control circuit 40 amplifies; Each single-ended power amplifier 10 drives independently one group of winding 51 on loud speaker 30 voice coil loudspeaker voice coils 5; Thereby four single-ended power amplifier 10 driven in common, four groups of windings 51 on the voice coil loudspeaker voice coil 5 drive drum paper 4 vibration soundings.
In addition; Fig. 4 shows second embodiment of the circuit theory diagrams that a loud speaker 30 is connected with front stage circuits; A plurality of windings 51 on corresponding loud speaker 30 voice coil loudspeaker voice coils 5 respectively connect front stage circuits through power amplification unit, and said power amplification unit comprises and a plurality of one to one bridge-type power amplifiers 80 of each winding (like BTL).Circuit theory diagrams as shown in Figure 4; Be wound with two groups of independently windings 51 on the voice coil loudspeaker voice coil 5 of one loud speaker 30; These two windings 51 connect signal processing and control circuit 40 through a bridge-type power amplifier 80 respectively, and wherein the output of two operational amplifiers in this bridge-type power amplifier 80 is connected in parallel on the two ends of corresponding winding 51.The setting of said bridge-type power amplifier 80 has further improved the power output of said active audio amplifier.
The circuit theory diagrams of the active audio amplifier of two sound channels about Fig. 5 shows and only has; This active audio amplifier comprises the left channel loudspeaker 61 and right channel loudspeaker 71 of corresponding left and right sound channels respectively; Be wound with respectively on the voice coil loudspeaker voice coil 5 of said left and right sound channels loud speaker 61,71 and organize independently winding 51 more, be connected input end of analog signal 50 through signal processing and control circuit 40 respectively with the single-ended one to one power amplifier 10 of a plurality of windings 51 of left channel loudspeaker 61; Equally, be connected said input end of analog signal 50 through said signal processing and control circuit 40 respectively with a plurality of one to one single-ended power amplifiers 10 of a plurality of windings 51 of right channel loudspeaker 71.In addition, the single-ended power amplifier 10 shown in Fig. 5 also can be bridge-type power amplifier 80.
Two sound channels and have the circuit theory diagrams of the active audio amplifier of source of sound treatment circuit about Fig. 6 shows and only has; This active audio amplifier comprises the left channel loudspeaker 61 and right channel loudspeaker 71 of corresponding left and right sound channels respectively; Be wound with respectively on the voice coil loudspeaker voice coil 5 of said left and right sound channels loud speaker 61,71 and organize independently winding 51 more, be connected input end of analog signal 50 through signal processing and control circuit 40 with sounding circuit 80 in order respectively with a plurality of one to one single-ended power amplifiers 10 of a plurality of windings 51 of left channel loudspeaker 61; Equally, be connected said input end of analog signal 50 through said signal processing and control circuit 40 with said sounding circuit 80 in order respectively with a plurality of one to one single-ended power amplifiers 10 of a plurality of windings 51 of right channel loudspeaker 71.In addition, the single-ended power amplifier 10 shown in Fig. 6 also can be bridge-type power amplifier 80.
The voice coil loudspeaker voice coil 5 of the left and right sound channels loud speaker 61,71 of Fig. 5 and active audio amplifier shown in Figure 6 is respectively by a plurality of single-ended power amplifiers 10 or bridge-type power amplifier 80 driven in common, thereby realizes that the low-voltage input produces the purpose of high-power output.
Further; Also can be wound with many group windings on the voice coil loudspeaker voice coil 5 of the loud speaker 30 of sound channels such as the corresponding subwoofer channel of said active audio amplifier, back L channel, back R channel, center channels; And link to each other with front stage circuits with single-ended one to one power amplifier 10 of a plurality of windings 51 of each loud speaker 30 or bridge-type power amplifier 80; Thereby reach the purpose that low-voltage is imported high-power output, and the better effect that amplifies.
Being merely the utility model preferred embodiment in sum, is not the practical range that is used for limiting the utility model.Be that all equivalences of being done according to the utility model claim content change and modification, all should belong to the utility model technology category.
Claims (6)
1. the active audio amplifier of a low-voltage high-power; Comprise front stage circuits, power amplification unit and loud speaker that communication in order connects; It is characterized in that: be wound with independently winding of at least two groups on the voice coil loudspeaker voice coil of at least one loud speaker, each said winding connects front stage circuits through power amplification unit respectively.
2. according to the active audio amplifier of the said low-voltage high-power of claim 1; It is characterized in that: said power amplification unit comprises and a plurality of one to one single-ended power amplifiers of each winding that each said winding connects front stage circuits through a said single-ended power amplifier respectively.
3. according to the active audio amplifier of the said low-voltage high-power of claim 2, it is characterized in that: each said winding is drawn two binding posts that are used to connect single-ended power amplifier and ground on the support of its said loud speaker.
4. according to the active audio amplifier of the said low-voltage high-power of claim 1; It is characterized in that: said power amplification unit comprises and a plurality of one to one bridge-type power amplifiers of each winding that each said winding connects front stage circuits through a said bridge-type power amplifier respectively; Two outputs of said bridge-type power amplifier are connected in parallel on the two ends with the corresponding winding of this bridge-type power amplifier.
5. according to the active audio amplifier of the said low-voltage high-power of claim 4, it is characterized in that: each said winding is drawn two binding posts that are used to connect two outputs of bridge-type power amplifier on the support of its said loud speaker.
6. according to the active audio amplifier of any said low-voltage high-power in the claim 1 to 5, it is characterized in that: its working power voltage is smaller or equal to 9V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202375193U CN202121758U (en) | 2011-07-07 | 2011-07-07 | Low-voltage high-power reactive loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202375193U CN202121758U (en) | 2011-07-07 | 2011-07-07 | Low-voltage high-power reactive loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121758U true CN202121758U (en) | 2012-01-18 |
Family
ID=45462794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202375193U Expired - Fee Related CN202121758U (en) | 2011-07-07 | 2011-07-07 | Low-voltage high-power reactive loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121758U (en) |
-
2011
- 2011-07-07 CN CN2011202375193U patent/CN202121758U/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: 20120118 Termination date: 20120707 |