CN206472109U - A kind of High-power amplifier output circuit - Google Patents
A kind of High-power amplifier output circuit Download PDFInfo
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- CN206472109U CN206472109U CN201720206516.0U CN201720206516U CN206472109U CN 206472109 U CN206472109 U CN 206472109U CN 201720206516 U CN201720206516 U CN 201720206516U CN 206472109 U CN206472109 U CN 206472109U
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Abstract
The utility model discloses a kind of High-power amplifier output circuit in electronic circuit technology field, including anti-static electricity interference circuit, the output end of the anti-static electricity interference circuit is electrically connected with the input of photoelectric coupling circuit, the output end of the photoelectric coupling circuit is electrically connected with the input of power model, the output end of the power model is electrically connected with the input of inversion module, audio signal carries out weakening interference of the electrostatic to signal by anti-static electricity interference circuit, signal quality is improved using photoelectric coupling circuit, interference is reduced again, it is used for the energy that power amplification is provided by power model again, audio signal frequency is set to become big, the amplified signal that inversion module is inputted according to power model generates complete superposed signal, and export to filter circuit, the superposed signal for recycling filter circuit to input inversion module is filtered processing, power output amplified signal, circuit overall structure is simple, it is easy to use, export audio quality high.
Description
Technical field
The utility model is related to electronic circuit technology field, specially a kind of High-power amplifier output circuit.
Background technology
In recent years, China's audio frequency power amplifier industry is developed rapidly, and domestic production technology is constantly lifted, with audio frequency apparatus numeral
Change technology continue to develop and to hi-fidelity audio equipment the need for, it was recognized that for audio-frequency power amplifier exploitation and
The importance of design.Therefore, the High-power amplifier output circuit technology handled direct to audio signal is just provided with very big
Application prospect, traditional power amplification output circuit typically uses Industrial Frequency Transformer power supply and AB class power amplifiers, efficiency is low, volume is big,
It is heavy, be disturbed strong, application scenario is very restricted.Therefore, I proposes a kind of High-power amplifier output circuit.
Utility model content
The purpose of this utility model is to provide a kind of High-power amplifier output circuit, to solve to carry in above-mentioned background technology
The traditional power amplification output circuit efficiency gone out is low, the problem of being disturbed strong.
To achieve the above object, the utility model provides following technical scheme：A kind of High-power amplifier output circuit, including
Anti-static electricity interference circuit, the output end of the anti-static electricity interference circuit is electrically connected with the input of photoelectric coupling circuit, the light
The output end of electric coupling circuit is electrically connected with the input of power model, and the output end of the power model is electrically connected with inversion mould
The input of block, the output end of the inversion module is electrically connected with the input of filter circuit.
It is preferred that, the inversion module includes output Ui1Port, the output Ui1Port is simultaneously connected to resistance R1 and amplifier A1
Output port, the other end of the resistance R1 is simultaneously connected to resistance R2, R3 and amplifier A1 anti-phase inputs port, the same phases of amplifier A1
Input port series resistor R5, the resistance R5 other end ground connection, the other end of the resistance R2 are serially connected with resistance R4, described
The resistance R4 other end is simultaneously connected to unidirectional TVS pipe and electric capacity C1, and the other end of the unidirectional TVS pipe is simultaneously connected to the another of resistance R3
End, ground wire, triode T emitter stage, resistance R8 and input U01Negative pole port, the other end of the electric capacity C1 is simultaneously connected to resistance R6
With triode T base stage, the other end of the resistance R6 is simultaneously connected to resistance R7 and+VCC inputs, and the other end of the resistance R7 is simultaneously
It is connected to triode T colelctor electrode and electric capacity C2, the other end of the electric capacity C2 and the other end and input U for being connected to resistance R801Just
Extreme mouth.
It is preferred that, the filter circuit includes input U0Positive pole port, the input U0Positive pole port concatenation rectifier bridge RB's
A ports, the b ports concatenation input U of the rectifier bridge RB0Negative pole port, the d ports of the rectifier bridge RB and be connected to electric capacity C3 and
Export U1Negative pole port, the other end of the electric capacity C3 and c ports and the resistance R9 for being connected to rectifier bridge RB, the resistance R9's is another
One end tandem electric inductance L, the inductance L other end are serially connected with output U1Positive pole port.
It is preferred that, the power model includes promoting pipe, power output tube and pulse width modulation power submodule.
Compared with prior art, the beneficial effects of the utility model are：The utility model is operationally：Audio signal passes through
Anti-static electricity interference circuit carries out weakening interference of the electrostatic to signal, improves signal quality using photoelectric coupling circuit, reduces again
Interference, then the energy by power model for providing power amplification, make audio signal frequency become big, inversion module is according to power
The amplified signal of module input generates complete superposed signal, and exports to filter circuit, recycles filter circuit to inversion mould
The superposed signal of block input is filtered processing, and power output amplified signal, circuit overall structure is simple, easy to use, output
Audio quality is high.
Brief description of the drawings
Fig. 1 is the utility model theory diagram；
Fig. 2 is the utility model inversion module circuit diagram；
Fig. 3 is the utility model filter circuit figure.
In figure：1 anti-static electricity interference circuit, 2 photoelectric coupling circuits, 3 power models, 4 inversion modules, 5 filter circuits.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of High-power amplifier output circuit, including it is anti-
Electrostatic interference circuit 1, the output end of the anti-static electricity interference circuit 1 is electrically connected with the input of photoelectric coupling circuit 2, the light
The output end of electric coupling circuit 2 is electrically connected with the input of power model 3, and the output end electric connection of the power model 3 is inverse
Become the input of module 4, the output end of the inversion module 4 is electrically connected with the input of filter circuit 5.
Wherein, the inversion module 4 includes output Ui1Port, the output Ui1Port is simultaneously connected to resistance R1 and amplifier A1
Output port, the other end of the resistance R1 is simultaneously connected to resistance R2, R3 and amplifier A1 anti-phase inputs port, the same phases of amplifier A1
Input port series resistor R5, the resistance R5 other end ground connection, the other end of the resistance R2 are serially connected with resistance R4, described
The resistance R4 other end is simultaneously connected to unidirectional TVS pipe and electric capacity C1, and the other end of the unidirectional TVS pipe is simultaneously connected to the another of resistance R3
End, ground wire, triode T emitter stage, resistance R8 and input U01Negative pole port, the other end of the electric capacity C1 is simultaneously connected to resistance R6
With triode T base stage, the other end of the resistance R6 is simultaneously connected to resistance R7 and+VCC inputs, and the other end of the resistance R7 is simultaneously
It is connected to triode T colelctor electrode and electric capacity C2, the other end of the electric capacity C2 and the other end and input U for being connected to resistance R801Just
Extreme mouth, the filter circuit 5 includes input U0Positive pole port, the input U0Positive pole port concatenation rectifier bridge RB a ports,
The b ports concatenation input U of the rectifier bridge RB0Negative pole port, the d ports of the rectifier bridge RB are simultaneously connected to electric capacity C3 and output U1
Negative pole port, the other end of the electric capacity C3 and c ports and the resistance R9 for being connected to rectifier bridge RB, the other end string of the resistance R9
The other end for meeting inductance L, the inductance L is serially connected with output U1Positive pole port, the power model 3 includes promoting pipe, power defeated
Outlet pipe and pulse width modulation power submodule.
Operation principle：Audio signal carries out weakening interference of the electrostatic to signal by anti-static electricity interference circuit 1, utilizes photoelectricity
Termination power 2 improves signal quality, and interference is reduced again, then by power model 3, promotion pipe, the power included using it is defeated
Outlet pipe and pulse width modulation power submodule, the energy for providing power amplification make audio signal frequency become big, inversion mould
The hybrid junction of triode T, resistance R6, R7, R8 and electric capacity C2 in block 4 are amplified to signal, pass through amplifier A1, resistance R1, R2
The amplified signal inputted with R3 hybrid junction according to power model 3 generates complete superposed signal, and exports to filter circuit 5, then
The superposed signal inputted using filter circuit 5 to inversion module 4 is filtered processing, power output amplified signal.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of High-power amplifier output circuit, including anti-static electricity interference circuit (1), it is characterised in that：The anti-static electricity interference
The output end of circuit (1) is electrically connected with the input of photoelectric coupling circuit (2), the output end electricity of the photoelectric coupling circuit (2)
Property connection power model (3) input, the output end of the power model (3) is electrically connected with the input of inversion module (4),
The output end of the inversion module (4) is electrically connected with the input of filter circuit (5).
2. a kind of High-power amplifier output circuit according to claim 1, it is characterised in that：Inversion module (4) bag
Include output Ui1Port, the output Ui1Port is simultaneously connected to resistance R1 and amplifier A1 output ports, and the other end of the resistance R1 is simultaneously
It is connected to resistance R2, R3 and amplifier A1 anti-phase inputs port, the amplifier A1 homophase inputs port series resistor R5, the resistance R5
Other end ground connection, the other end of the resistance R2 is serially connected with resistance R4, and the other end of the resistance R4 is simultaneously connected to unidirectional TVS pipe
With electric capacity C1, the other end of the unidirectional TVS pipe and the other end, ground wire, triode T emitter stage, the resistance for being connected to resistance R3
R8 and input U01Negative pole port, the other end of the electric capacity C1 and the base stage for being connected to resistance R6 and triode T, the resistance R6's
The other end is simultaneously connected to resistance R7 and+VCC inputs, the other end of the resistance R7 and the colelctor electrode and electric capacity C2 for being connected to triode T,
The other end of the electric capacity C2 and the other end and input U for being connected to resistance R801Positive pole port.
3. a kind of High-power amplifier output circuit according to claim 1, it is characterised in that：Filter circuit (5) bag
Include input U0Positive pole port, the input U0Positive pole port concatenation rectifier bridge RB a ports, the b ports concatenation of the rectifier bridge RB
Input U0Negative pole port, the d ports of the rectifier bridge RB are simultaneously connected to electric capacity C3 and output U1Negative pole port, the electric capacity C3's is another
One end is simultaneously connected to rectifier bridge RB c ports and resistance R9, the resistance R9 other end tandem electric inductance L, and the inductance L's is another
End is serially connected with output U1Positive pole port.
4. a kind of High-power amplifier output circuit according to claim 1, it is characterised in that：Power model (3) bag
Include promotion pipe, power output tube and pulse width modulation power submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720206516.0U CN206472109U (en) | 2017-03-06 | 2017-03-06 | A kind of High-power amplifier output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720206516.0U CN206472109U (en) | 2017-03-06 | 2017-03-06 | A kind of High-power amplifier output circuit |
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| Publication Number | Publication Date |
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| CN206472109U true CN206472109U (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720206516.0U Active CN206472109U (en) | 2017-03-06 | 2017-03-06 | A kind of High-power amplifier output circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528494A (en) * | 2017-09-29 | 2017-12-29 | 湖北天禾立方智能科技发展有限公司 | Microcontroller power supply Multifunction inverter circuit |
-
2017
- 2017-03-06 CN CN201720206516.0U patent/CN206472109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528494A (en) * | 2017-09-29 | 2017-12-29 | 湖北天禾立方智能科技发展有限公司 | Microcontroller power supply Multifunction inverter circuit |
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