CN205812366U - Power amplifier and speaker system - Google Patents
Power amplifier and speaker system Download PDFInfo
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- CN205812366U CN205812366U CN201620405932.9U CN201620405932U CN205812366U CN 205812366 U CN205812366 U CN 205812366U CN 201620405932 U CN201620405932 U CN 201620405932U CN 205812366 U CN205812366 U CN 205812366U
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- speaker
- negative pole
- positive pole
- pole
- detection module
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Abstract
The utility model discloses a kind of power amplifier and speaker system, relate to loudspeaker techniques field.This power amplifier is used for driving speaker, including the voltage detection module for detecting speaker voltage, described voltage detection module include being separately provided for the test side being directly connected to speaker.Propose to use the speaker system of above-mentioned power amplifier simultaneously.The voltage detection module of the power amplifier that this utility model provides includes the test side being separately provided, test side can directly be connected with speaker, reduce the loop resitance impact on voltage detection module, make voltage detection module can detect the magnitude of voltage at speaker two ends accurately, it is greatly improved the accuracy of detection of power amplifier, and then improve the accuracy that speaker is regulated by power amplifier, and there is simple in construction, implement convenient, the advantage of good stability.
Description
Technical field
This utility model relates to speaker field, particularly relates to a kind of power amplifier and speaker system.
Background technology
Speaker is a kind of electricity-power-sonic transducer, and it is the critical elements in stereo set.Speaker is people at ordinary times
Daily life in extensively used, bring the electricity such as a lot of facilities, automobile, broadcast, TV, audio amplifier, mobile phone, MP4, computer
In sub-product scope, the application of speaker is almost seen everywhere.
Intelligent power output amplification system is to implement non-linear, digital in Audio Signal Processing to control and the system of protection, can be to raising
The electroacoustic transducer systems such as sound device are protected, and predict its service life.Traditional intelligent power output amplification simplified electrical circuit diagram such as Fig. 1
Shown in, acoustical signal is exported to speaker 8 ' by signal output module 2 ' by variable gain amplifier 5 ' and power amplifier 6 '
Making its sounding and work, voltage detection module 4 ', current detection module 3 ' purpose are voltage in testing circuit, electric current, and according to
The duty of this results presumption speaker, feeds back to signal processor by information subsequently.Signal processor 1 ' by filtering or
Adjust the modes such as voltage output signal changed and transmit to signal output module 2 '.Finally export the audio signal to speaker
Can adjust in real time, reach speaker acoustical behavior and the purpose of reliability dynamic equilibrium with this.Two of current detection module 3 '
Electrode is connected in parallel to an output electrode of power amplifier 6 ' by current sampling resistor 7 '.Two electricity of voltage detection module 4 '
Pole is respectively connected to two output electrodes of power amplifier 6 '.
Traditional intelligence power amplifier is limited on loadspeaker structure only one group of electrode in the application, and reality in the application cannot be accurate
True obtains the speaker Voltage Feedback near end turn.In traditional intelligence power amplifier schematic diagram as shown in Figure 1, voltage
(a, b) to the resistance R mono-between the electrode of speaker 8 ' for detection module 4 ' two electrode and power amplifier 6 ' two electrode joint
As be about 0.3 Europe, this resistance R will be by as speaker internal resistance, and when the self-resistance of speaker 8 ' is less, resistance R is to electricity
The testing result of pressure detection module 4 ' produces a very large impact, and ultimately results in intelligent power output amplification and becomes speaker detection and regulation performance
Difference.
Utility model content
A purpose of the present utility model is to propose the power amplifier that a kind of voltage detecting precision is high.
Further object of the present utility model is the power amplifier proposing a kind of raising to speaker accommodation accuracy.
Of the present utility model further an object is that proposes a kind of acoustical behavior and the speaker system of reliability dynamic equilibrium
System.
For reaching this purpose, on the one hand, this utility model by the following technical solutions:
A kind of power amplifier, is used for driving speaker, including the voltage detection module for detecting speaker voltage, described
Voltage detection module include being separately provided for the test side being directly connected to speaker.
Preferably, also include for the signal output module of speaker output signal, the letter of described signal output module
The test side of number outfan and described voltage detection module is all separately provided.
Preferably, the current detection module for detecting speaker current and signal processor are also included, at described signal
Reason device is connected with described signal output module, voltage detection module and current detection module respectively；
Described signal processor is for according to raising that described voltage detection module and described current detection module detect respectively
Sound device voltage and current adjusts the signal that described signal output module exports to speaker.
On the other hand, this utility model is by the following technical solutions:
A kind of speaker system, including speaker, also includes power amplifier as above, and described power amplifier voltage is examined
The test side surveying module is directly connected with described speaker.
Preferably, described speaker includes the first positive pole and the first negative pole；
The test side of described voltage detection module includes voltage detecting positive pole and voltage detecting negative pole；
Described first positive pole is connected with described voltage detecting positive pole, and described first negative pole is with described voltage detecting negative pole even
Connect.
Preferably, described power amplifier includes for the signal output module of speaker output signal；
Described speaker includes the second positive pole and the second negative pole；
The signal output part of described signal output module includes signal positive pole and signal negative pole；
Described second positive pole is connected with described signal positive pole, and described second negative pole is connected with described signal negative pole.
Preferably, described first positive pole, the first negative pole, the second positive pole and/or the second negative pole include pad, pcb board, flexibility
Circuit board, wire or shell fragment.
Preferably, described speaker also includes voice coil loudspeaker voice coil；
Described first positive pole and described second positive pole connect, and described first negative pole is connected with described second negative pole, described sound
One end of circle connects described first positive pole or described second positive pole, and the other end of described voice coil loudspeaker voice coil connects described first negative pole or second
Negative pole；Or,
The first lead-in wire and the second lead-in wire are drawn in one end of described voice coil loudspeaker voice coil, and described first lead-in wire connects described first positive pole, institute
Stating the second lead-in wire and connect the second positive pole, the other end of described voice coil loudspeaker voice coil draws the 3rd lead-in wire and the 4th lead-in wire, and described 3rd lead-in wire is even
Connecing described first negative pole, described 4th lead-in wire connects described second negative pole.
Preferably, described speaker includes speaker positive pole and speaker negative pole；
Described speaker positive pole connects through First Line and the first positive pole, through the second line and the connection of the second positive pole, described in raise one's voice
Device negative pole connects through the 3rd line and the first negative pole, connects through the 4th line and the second negative pole.
Preferably, the test side of described voltage detection module includes voltage detecting positive pole and voltage detecting negative pole, described letter
The signal output part of number output module includes signal positive pole and signal negative pole；
Described first positive pole is connected with described voltage detecting positive pole, and described first negative pole is with described voltage detecting negative pole even
Connecing, described second positive pole is connected with described signal positive pole, and described second negative pole is connected with described signal negative pole.
The beneficial effects of the utility model are:
The voltage detection module of the power amplifier that this utility model provides includes the test side being separately provided, and test side can be straight
Connect and be connected with speaker, reduce the loop resitance impact on voltage detection module so that voltage detection module can detect accurately
The magnitude of voltage at speaker two ends, is greatly improved the accuracy of detection of power amplifier, and then improves what speaker was regulated by power amplifier
Accuracy, and there is simple in construction, implement convenient, the advantage of good stability.
The speaker system that this utility model provides uses above-mentioned power amplifier, it is possible to accurate detection speaker two ends
Magnitude of voltage, and then improve power amplifier accuracy that speaker is regulated, it is ensured that speaker system acoustical behavior and reliability
Dynamic equilibrium.
Accompanying drawing explanation
Fig. 1 is the connection diagram of existing power amplifier and speaker；
Fig. 2 is the power amplifier connection diagram with speaker of this utility model embodiment one offer；
Fig. 3 is the structure schematic diagram of the speaker that this utility model embodiment two provides；
Fig. 4 is the structural representation of pad in Fig. 3；
Fig. 5 is the structural representation of the loudspeaker voice coil that this utility model embodiment three provides；
Fig. 6 is the structural representation of the speaker module that this utility model embodiment four provides；
Fig. 7 is the lines of loudspeakers connection figure of the speaker module that this utility model embodiment four provides.
In figure, 1 ', signal processor；2 ', signal output module；3 ', current detection module；4 ', voltage detection module；
5 ', variable gain amplifier；6 ', power amplifier；7 ', current sampling resistor；8 ', speaker；
1, signal processor；2, signal output module；21, signal positive pole；22, signal negative pole；3, current detection module；
31, current detecting positive pole；32, current detecting negative pole；4, voltage detection module；41, voltage detecting positive pole；42, voltage detecting is born
Pole；5, variable gain amplifier；6, power amplifier；7, current sampling resistor；8, speaker；81, the first positive pole；82, first
Negative pole；83, the second positive pole；84, the second negative pole；85, the first pad；86, the second pad；87, voice coil loudspeaker voice coil；871, the first lead-in wire；
872, the second lead-in wire；873, the 3rd lead-in wire；874, the 4th lead-in wire；88, speaker positive pole；89, speaker negative pole；91, First Line；
92, the second line；93, the 3rd line；94, the 4th line；10, speaker module.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by detailed description of the invention.
This utility model provides a kind of power amplifier, is used for driving speaker, including for detecting speaker voltage
Voltage detection module, voltage detection module has the test side being separately provided, and test side can directly be connected with speaker, reduces ring
The impact of road Resistance versus voltage detection module so that voltage detection module can detect the magnitude of voltage at speaker two ends accurately, greatly
The big accuracy of detection improving power amplifier, and then improve the accuracy that speaker is regulated by power amplifier, and there is structure letter
Singly, convenient, the advantage of good stability is implemented.
This utility model additionally provides a kind of speaker system using above-mentioned power amplifier, raising one's voice in speaker system
Device is directly connected to the test side of power amplifier voltage detection module, and voltage detection module can detect speaker two ends accurately
Magnitude of voltage, and then improve power amplifier accuracy that speaker is regulated, it is ensured that speaker system acoustical behavior and reliability
Dynamic equilibrium.
Below in conjunction with specific embodiment, power amplifier and the concrete knot of speaker system that this utility model provides is described
Structure.
Embodiment one:
Present embodiments providing a kind of power amplifier, its structural representation being connected with speaker is as in figure 2 it is shown, with existing
Power amplifier similar, power amplifier that the present embodiment provides includes signal processor 1 and respectively with signal processor 1 even
Signal output module 2, current detection module 3 and the voltage detection module 4 connect.Signal output module 2 is amplified by variable gain
Acoustical signal output is made its sounding to speaker 8 and works by device 5 and power amplifier 6, and current detection module 3 is raised for detection
The electric current of sound device 8, voltage detection module 4 is for detecting the voltage of speaker 8, and signal processor 1 can be according to voltage detection module 4
Speaker 8 voltage and current detected respectively with current detection module 3 by filtering or adjusts the modes such as voltage by output signal
Changing and transmit to signal output module 2, the signal of final output to speaker 8 can adjust in real time, reaches speaker 8 sound with this
Learn performance and the purpose of reliability dynamic equilibrium.Wherein, the signal output part of signal output module 2 and voltage detection module 4
Test side is all separately provided.
Concrete, as in figure 2 it is shown, the signal output part of signal output module 2 includes signal positive pole 21 and signal negative pole 22,
Wherein, signal output module 2 is sequentially connected with variable gain amplifier 5 and power amplifier 6, power amplifier 6 draw signal
Positive pole 21 and signal negative pole 22, signal positive pole 21 and signal negative pole 22 are directly connected to speaker 8 respectively.Voltage detection module 4
Test side include voltage detecting positive pole 41 and voltage detecting negative pole 42, voltage detecting positive pole 41 and voltage detecting negative pole 42 are respectively
It is directly connected to speaker 8.The test side of current detection module 3 includes current detecting positive pole 31 and current detecting negative pole 32, electricity
Stream detection positive pole 31 and current detecting negative pole 32 are connected in parallel to signal positive pole 21 or signal negative pole 22 by current sampling resistor 7.
Embodiment two:
Present embodiments providing a kind of speaker system, it includes speaker 8 and the electricity of the power amplifier as described in embodiment one
Road.
Wherein, speaker 8 includes the first positive pole the 81, first negative pole the 82, second positive pole 83 and the second negative pole 84.Voltage detecting
Positive pole 41 is connected with the first positive pole 81, and voltage detecting negative pole 42 is connected with the first negative pole 82, and voltage detection module 4 is by first just
Pole 81 and the first negative pole 82 detect the voltage of speaker 8.Signal positive pole 21 is connected with the second positive pole 83, signal negative pole 22 and second
Negative pole 84 connects.Signal output module 2 passes through the second positive pole 83 and the second negative pole 84 to speaker 8 input signal to drive it
Sound.
First positive pole the 81, first negative pole the 82, second positive pole 83 and second negative pole 84 form that arranges on speaker 8 are not
Limit, can but be not limited to include pad, pcb board, flexible PCB, wire or shell fragment, for ease of install, wire is with wiring
Terminal.First positive pole the 81, first negative pole 82 can be the most in parallel with the second positive pole 83 and the second negative pole 84, it is also possible to by raising one's voice
The voice coil loudspeaker voice coil of device 8 realizes parallel connection.
Such as, as it is shown on figure 3, first positive pole the 81, first negative pole the 82, second positive pole 83 and the second negative pole 84 are with pad
Form is arranged on a speaker.Concrete, including two pads, it is respectively the first weldering being connected with voice coil loudspeaker voice coil one end of speaker 8
Dish 85 and the second pad 86 being connected with the voice coil loudspeaker voice coil other end, as shown in Figure 4, its first end is first to the structure of the first pad 85
Positive pole 81, second end relative with its first end is the second positive pole 83.The structure of the second pad is similar with the first pad, and it is first years old
End is the first negative pole 82, and second end relative with its first end is the second negative pole 84.First pad 85 and the second pad 86 are respectively
Being molded to the plastic parts of speaker 8 back, the first pad 85 exposes two regions at speaker 8 back, and one of them region is
The region of the first positive pole 81, another region is the region of the second positive pole 83；Second pad 86 exposes two at speaker 8 back
Region, one of them region is the region of the first negative pole 82, and another region is the region of the second negative pole 84.
Above-mentioned speaker can load in module.
Embodiment three:
Present embodiments providing a kind of speaker system, its structure is essentially identical with embodiment two, including speaker and
Power amplifier as described in embodiment one.Wherein, speaker includes first positive pole the 81, first negative pole the 82, second positive pole 83 and
Two negative poles 84.Voltage detecting positive pole 41 is connected with the first positive pole 81, and voltage detecting negative pole 42 is connected with the first negative pole 82, and voltage is examined
Survey module 4 and detected the voltage of speaker 8 by the first positive pole 81 and the first negative pole 82.Signal positive pole 21 and the second positive pole 83 are even
Connecing, signal negative pole 22 is connected with the second negative pole 84.Signal output module 2 passes through the second positive pole 83 and the second negative pole 84 to speaker
8 input signals are to drive its sounding.
Difference is, in the present embodiment, the first positive pole 81 is separately provided with the second positive pole 83, the first negative pole 82 and
Two negative poles 84 are also for being separately provided.As it is shown in figure 5, the first lead-in wire 871 and the second lead-in wire is drawn in one end of loudspeaker voice coil 87
872, the other end of voice coil loudspeaker voice coil 87 draws the 3rd lead-in wire 873 and the 4th lead-in wire 874.First lead-in wire 871 connection the first positive pole 81, second
Lead-in wire 872 connection the second positive pole 83, the 3rd lead-in wire 873 connection the first negative pole 82, the 4th lead-in wire 874 connection the second negative pole 84.Its
In, first to fourth lead-in wire can but be not limited to be brocade silk thread or enamel-covered wire.
Above-mentioned speaker can load in module.
Embodiment four:
Present embodiments providing a kind of speaker system, it includes speaker and the electricity of the power amplifier as described in embodiment one
Road.
Wherein, speaker is the conventional loudspeakers of only two electrodes, as shown in Figures 6 and 7, conventional loudspeakers 8 is loaded
Housing is formed speaker module 10.This speaker 8 includes speaker positive pole 88 and speaker negative pole 89, by two electrode extension
It is four electrodes, is respectively used to be connected with voltage detection module 4 and signal output module 2.
Such as, speaker positive pole 88 is connected with the first positive pole 81 through First Line 91, connects through the second line 92 and the second positive pole 83
Connect；Speaker negative pole 89 is connected with the first negative pole 82 through the 3rd line 93, is connected with the second negative pole 84 through the 4th line 94, thus, will
Speaker positive pole 88 and 89 two electrode extension of speaker negative pole are first positive pole the 81, second positive pole the 83, first negative pole 82 and
Two 84 4, negative pole electrodes.Voltage detecting positive pole 41 is connected with the first positive pole 81, and voltage detecting negative pole 42 and the first negative pole 82 are even
Connecing, voltage detection module 4 detects the voltage of speaker 8 by the first positive pole 81 and the first negative pole 82.Signal positive pole 21 and second
Positive pole 83 connects, and signal negative pole 22 is connected with the second negative pole 84.Signal output module 2 is by the second positive pole 83 and the second negative pole 84
To speaker 8 input signal to drive its sounding.
First Line is to the 4th line and the setting of each electrode for convenience, and wire harness can be used to realize speaker electrode and electricity
Pressure detection module 4 and the connection of signal output module 2.
Know-why of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
By novel principle, and the restriction to this utility model protection domain can not be construed to by any way.Based on explanation herein,
Those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present utility model,
Within these modes fall within protection domain of the present utility model.
Claims (10)
1. a power amplifier, is used for driving speaker (8), it is characterised in that include the electricity for detecting speaker (8) voltage
Pressure detection module (4), described voltage detection module (4) include being separately provided for the detection being directly connected to speaker (8)
End.
Power amplifier the most according to claim 1, it is characterised in that also include for speaker (8) output signal
Signal output module (2), the signal output part of described signal output module (2) and the test side of described voltage detection module (4)
All it is separately provided.
Power amplifier the most according to claim 2, it is characterised in that also include the electricity for detecting speaker (8) electric current
Stream detection module (3) and signal processor (1), described signal processor (1) respectively with described signal output module (2), voltage
Detection module (4) and current detection module (3) connect；
Described signal processor (1) is for detecting respectively according to described voltage detection module (4) and described current detection module (3)
Speaker (8) voltage and current adjust described signal output module (2) signal that exports to speaker (8).
4. a speaker system, including speaker, it is characterised in that also include the merit as described in any one of claims 1 to 3
Electric discharge road, the test side of described power amplifier voltage detection module (4) is directly connected with described speaker (8).
Speaker system the most according to claim 4, it is characterised in that
Described speaker (8) includes the first positive pole (81) and the first negative pole (82)；
The test side of described voltage detection module (4) includes voltage detecting positive pole (41) and voltage detecting negative pole (42)；
Described first positive pole (81) is connected with described voltage detecting positive pole (41), described first negative pole (82) and described voltage detecting
Negative pole (42) connects.
Speaker system the most according to claim 5, it is characterised in that
Described power amplifier includes for the signal output module (2) of speaker (8) output signal；
Described speaker (8) includes the second positive pole (83) and the second negative pole (84)；
The signal output part of described signal output module (2) includes signal positive pole (21) and signal negative pole (22)；
Described second positive pole (83) is connected with described signal positive pole (21), described second negative pole (84) and described signal negative pole (22)
Connect.
Speaker system the most according to claim 6, it is characterised in that described first positive pole (81), the first negative pole (82),
Second positive pole (83) and/or the second negative pole (84) include pad, pcb board, flexible PCB, wire or shell fragment.
Speaker system the most according to claim 6, it is characterised in that described speaker also includes voice coil loudspeaker voice coil (87)；
Described first positive pole (81) and described second positive pole (83) connect, described first negative pole (82) and described second negative pole (84)
Connecting, one end of described voice coil loudspeaker voice coil (87) connects described first positive pole (81) or described second positive pole (83), described voice coil loudspeaker voice coil (87)
The other end connects described first negative pole (82) or the second negative pole (84)；Or,
The first lead-in wire (871) and the second lead-in wire (872) are drawn in one end of described voice coil loudspeaker voice coil (87), and described first lead-in wire (871) connects
Described first positive pole (81), described second lead-in wire (872) connects the second positive pole (83), and the other end of described voice coil loudspeaker voice coil (87) draws the
Three lead-in wires (873) and the 4th lead-in wire (874), described 3rd lead-in wire (873) connects described first negative pole (82), described 4th lead-in wire
(874) described second negative pole (84) is connected.
Speaker system the most according to claim 6, it is characterised in that described speaker (8) includes speaker positive pole
And speaker negative pole (89) (88)；
Described speaker positive pole (88) is connected with the first positive pole (81) through First Line (91), through the second line (92) and the second positive pole
(83) connecting, described speaker negative pole (89) is connected with the first negative pole (82) through the 3rd line (93), through the 4th line (94) and second
Negative pole (84) connects.
Speaker system the most according to claim 9, it is characterised in that the test side of described voltage detection module (4)
Including voltage detecting positive pole (41) and voltage detecting negative pole (42), the signal output part of described signal output module (2) includes letter
Number positive pole (21) and signal negative pole (22)；
Described first positive pole (81) is connected with described voltage detecting positive pole (41), described first negative pole (82) and described voltage detecting
Negative pole (42) connects, and described second positive pole (83) is connected with described signal positive pole (21), described second negative pole (84) and described letter
Number negative pole (22) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405932.9U CN205812366U (en) | 2016-05-06 | 2016-05-06 | Power amplifier and speaker system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405932.9U CN205812366U (en) | 2016-05-06 | 2016-05-06 | Power amplifier and speaker system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205812366U true CN205812366U (en) | 2016-12-14 |
Family
ID=58145044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620405932.9U Withdrawn - After Issue CN205812366U (en) | 2016-05-06 | 2016-05-06 | Power amplifier and speaker system |
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| CN (1) | CN205812366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721986A (en) * | 2016-05-06 | 2016-06-29 | 深圳精拓创新科技有限公司 | Power amplifier circuit and loudspeaker system |
-
2016
- 2016-05-06 CN CN201620405932.9U patent/CN205812366U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721986A (en) * | 2016-05-06 | 2016-06-29 | 深圳精拓创新科技有限公司 | Power amplifier circuit and loudspeaker system |
| CN105721986B (en) * | 2016-05-06 | 2019-08-27 | 深圳精拓创新科技有限公司 | Power amplifier and speaker system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20190827 |
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| AV01 | Patent right actively abandoned |