CN206237592U - A kind of high-fidelity power amplifier for automobile audio - Google Patents
A kind of high-fidelity power amplifier for automobile audio Download PDFInfo
- Publication number
- CN206237592U CN206237592U CN201621186150.7U CN201621186150U CN206237592U CN 206237592 U CN206237592 U CN 206237592U CN 201621186150 U CN201621186150 U CN 201621186150U CN 206237592 U CN206237592 U CN 206237592U
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- China
- Prior art keywords
- resistance
- electric capacity
- operational amplifier
- resistor
- inductance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of high-fidelity power amplifier for automobile audio, including operational amplifier, resistance, electric capacity, inductance, input input, output end output, earth terminal, positive power source terminal, negative power end, characterized in that, the resistance includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7；The electric capacity includes the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4；The inductance includes the first inductance L1.The utility model is core component using operational amplifier LM4766, devises a kind of high-fidelity power amplifier for automobile audio, and the power amplifier component is few, and stable performance, distortion is small；Also, it is suitable to later maintenance and debugging.
Description
Technical field
The utility model is related to power amplifier field, is to be related to a kind of high-fidelity power amplifier for automobile audio specifically.
Background technology
High-fidelity power amplifier, be for promoting loudspeaker sounding, so as to reappear the power amplification device of sound, every sounding
Electronic product in will use it.In the prior art, the power amplifier in particular for automobile audio is complicated, and frequency band is narrow, loses
Very big, the audio signal quality of amplification is poor.Also, discrete device is more in circuit, it is unfavorable for the maintenance and upgrading in later stage.
Utility model content
To overcome above mentioned problem of the prior art, the utility model provides ingenious, simple structure the one kind of design to be used for
The high-fidelity power amplifier of automobile audio.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of high-fidelity power amplifier for automobile audio, including operational amplifier, resistance, electric capacity, inductance, input
Input, output end output, earth terminal, positive power source terminal, negative power end, the resistance include first resistor R1, second resistance
R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7；The electric capacity includes the first electricity
Hold C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4；The inductance includes the first inductance L1；
The inverting input of the operational amplifier passes through the first resistor R1 being cascaded and the second electric capacity C2 is connected
To earth terminal；The inverting input of the operational amplifier is connected to the output of the operational amplifier by the 5th resistance R5
End；The in-phase input end of the operational amplifier passes through the 3rd resistor R3 being cascaded and second resistance R2 is connected to ground connection
End；Described second resistance R2 one end is connected to earth terminal, and the other end of the second resistance R2 is connected to by the first electric capacity C1
Input input；The first inductance L1 and the 6th resistance R6 connections that the output end of the operational amplifier passes through and connects together
To output end output；The output end output passes through the 7th resistance R7 being cascaded and the 4th electric capacity C4 is connected to and connects
Ground terminal；Positive power source terminal described in the three-terminal link of the operational amplifier, the 4th end connection of the operational amplifier is described negative
Power end.
Specifically, the positive power source terminal is positive 5 volts of voltage, and the negative power end is minus 5 volts of voltage；The operational amplifier
It is LM4766.
Preferably, the audiorange is 150Hz ~ 20KHz.
Preferably, the first resistor R1 is 15K ohm, second resistance R2 is 45K ohm, and 3rd resistor R3 is 1K Europe
Nurse, the 4th resistance R4 is 35K ohm, and the 5th resistance R5 is 300K ohm, and the 6th resistance R6 is 100 ohm, and the 7th resistance R7 is
1K ohm；The first electric capacity C1 is 1uF, and the second electric capacity C2 is 22uF, and the 3rd electric capacity C3 is 100uF, and the 4th electric capacity C4 is
100nF；The first inductance L1 is 0.7uH.
Compared with prior art, the utility model has the advantages that：
The utility model is core component using operational amplifier LM4766, devises a kind of height for automobile audio
Fidelity power amplifier, the power amplifier component is few, and stable performance, distortion is small；Also, it is suitable to later maintenance and debugging.
Brief description of the drawings
Fig. 1 is connection diagram of the present utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, and implementation method of the present utility model includes
But it is not limited to the following example.
Embodiment
As shown in figure 1, a kind of high-fidelity power amplifier for automobile audio, including operational amplifier, resistance, electric capacity, inductance,
Input input, output end output, earth terminal, positive power source terminal, negative power end, the resistance include first resistor R1, second
Resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7；The electric capacity includes the
One electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4；The inductance includes the first inductance L1；
The inverting input of the operational amplifier passes through the first resistor R1 being cascaded and the second electric capacity C2 is connected
To earth terminal；The inverting input of the operational amplifier is connected to the output of the operational amplifier by the 5th resistance R5
End；The in-phase input end of the operational amplifier passes through the 3rd resistor R3 being cascaded and second resistance R2 is connected to ground connection
End；Described second resistance R2 one end is connected to earth terminal, and the other end of the second resistance R2 is connected to by the first electric capacity C1
Input input；The first inductance L1 and the 6th resistance R6 connections that the output end of the operational amplifier passes through and connects together
To output end output；The output end output passes through the 7th resistance R7 being cascaded and the 4th electric capacity C4 is connected to and connects
Ground terminal；Positive power source terminal described in the three-terminal link of the operational amplifier, the 4th end connection of the operational amplifier is described negative
Power end.
Specifically, the positive power source terminal is positive 5 volts of voltage, and the negative power end is minus 5 volts of voltage；The operational amplifier
It is LM4766.
Preferably, the audiorange is 150Hz ~ 20KHz.
Preferably, the first resistor R1 is 15K ohm, second resistance R2 is 45K ohm, and 3rd resistor R3 is 1K Europe
Nurse, the 4th resistance R4 is 35K ohm, and the 5th resistance R5 is 300K ohm, and the 6th resistance R6 is 100 ohm, and the 7th resistance R7 is
1K ohm；The first electric capacity C1 is 1uF, and the second electric capacity C2 is 22uF, and the 3rd electric capacity C3 is 100uF, and the 4th electric capacity C4 is
100nF；The first inductance L1 is 0.7uH.The utility model is core component using operational amplifier LM4766, is devised
A kind of high-fidelity power amplifier for automobile audio, the power amplifier component is few, and stable performance, distortion is small；Also, after being suitable to
Phase safeguards and debugs.
Above-described embodiment is only preferred embodiment of the present utility model, not to the limitation of the utility model protection domain,
In every case design principle of the present utility model, and the change for carrying out non-creativeness work on this basis and making are used, all should
Belong within protection domain of the present utility model.
Claims (3)
1. a kind of high-fidelity power amplifier for automobile audio, including operational amplifier, resistance, electric capacity, inductance, input input,
Output end output, earth terminal and positive power source terminal, negative power end, it is characterised in that the resistance includes first resistor R1, second
Resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7；The electric capacity includes the
One electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4；The inductance is the first inductance L1；
The inverting input of the operational amplifier passes through the first resistor R1 being serially connected and the second electric capacity C2 is connected to ground connection
End, the output end of the operational amplifier is connected to by the 5th resistance R5；The in-phase input end of the operational amplifier passes through
The 3rd resistor R3 and second resistance R2 being serially connected are connected to earth terminal；Described second resistance R2 one end is connected to earth terminal,
The other end is connected to input input by the first electric capacity C1；The output end of the operational amplifier is by parallel with one another the
One inductance L1 and the 6th resistance R6 are connected to output end output；The output end output passes through the 7th resistance being serially connected
R7 and the 4th electric capacity C4 are connected to earth terminal；Positive power source terminal described in the three-terminal link of the operational amplifier, the connection of the 4th end
The negative power end.
2. a kind of high-fidelity power amplifier for automobile audio according to claim 1, it is characterised in that the positive power source terminal
It is+5 volt voltages, the negative power end is -5 volt voltages；The operational amplifier is LM4766.
3. a kind of high-fidelity power amplifier for automobile audio according to claim 2, it is characterised in that the first resistor
R1 is 15K ohm, and second resistance R2 is 45K ohm, and 3rd resistor R3 is 1K ohm, and the 4th resistance R4 is 35K ohm, the 5th electricity
Resistance R5 is 300K ohm, and the 6th resistance R6 is 100 ohm, and the 7th resistance R7 is 1K ohm；The first electric capacity C1 is 1uF, the
Two electric capacity C2 are 22uF, and the 3rd electric capacity C3 is 100uF, and the 4th electric capacity C4 is 100nF；The first inductance L1 is 0.7uH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186150.7U CN206237592U (en) | 2016-10-28 | 2016-10-28 | A kind of high-fidelity power amplifier for automobile audio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186150.7U CN206237592U (en) | 2016-10-28 | 2016-10-28 | A kind of high-fidelity power amplifier for automobile audio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237592U true CN206237592U (en) | 2017-06-09 |
Family
ID=58990996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621186150.7U Expired - Fee Related CN206237592U (en) | 2016-10-28 | 2016-10-28 | A kind of high-fidelity power amplifier for automobile audio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206237592U (en) |
-
2016
- 2016-10-28 CN CN201621186150.7U patent/CN206237592U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |