CN104601120A - Audio power amplifier with small degree of distortion - Google Patents
Audio power amplifier with small degree of distortion Download PDFInfo
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- CN104601120A CN104601120A CN201310526258.0A CN201310526258A CN104601120A CN 104601120 A CN104601120 A CN 104601120A CN 201310526258 A CN201310526258 A CN 201310526258A CN 104601120 A CN104601120 A CN 104601120A
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Abstract
The invention discloses an audio power amplifier with a small degree of distortion. The audio power amplifier comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first triode, a second triode, a third triode, a fourth triode, a fifth triode, a sixth triode, a DC power supply and a speaker. The audio power amplifier with the small degree of distortion has the advantages that the input end has very small hum and noise as well as less calorific value within a rated continuous power range under short circuit or open circuit, and the degree of distortion is smaller in a process for signal processing, so that the popularization and promotion value is higher.
Description
Technical field
The present invention relates to a kind of amplifier, particularly relate to the audio-frequency power amplifier that a kind of distortion factor is little.
Background technology
Along with the application with new technology that improves constantly of transistor triode manufacturing technology, every practicality index and reliability index are all greatly improved, and constantly in the power output of Xiang Geng great, less volume, lighter weight, more function and intelligent direction development, audio-frequency power amplifier also develops rapidly thereupon, and audio-frequency power amplifier now in use all also exists larger hum and noise, and caloric value is more, the distortion factor is higher, can not adapt to the development of society.
Summary of the invention
Object of the present invention is just to provide to solve the problem the audio-frequency power amplifier that a kind of distortion factor is little.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, 14 resistance, 15 resistance, 16 resistance, 17 resistance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, first triode, second triode, 3rd triode, 4th triode, 5th triode, 6th triode, DC power supply and loud speaker, the first end of described first resistance is connected with signal input part, and the second end of described first resistance is connected with the negative pole of described first electric capacity, the positive pole of described first electric capacity simultaneously with the first end of described second electric capacity, the base stage of described first triode, the first end of described second resistance is connected with the first end of described 3rd resistance, the second end of described second electric capacity simultaneously with the first end of described second resistance, the negative pole of described 3rd electric capacity, the emitter of described first triode, the first end of described 8th resistance, the first end of described 9th resistance, the first end of described 11 resistance, the emitter of described 4th triode, the collector electrode of described 6th triode, the first end of described 16 resistance is connected with the first end of described 9th electric capacity and ground connection, the positive pole of described 3rd electric capacity is connected with the first end of described 4th resistance, second end of described 4th resistance is connected with the second end of described 3rd resistance and the first end of described 7th resistance simultaneously, second end of described 7th resistance is connected with the second end of described 8th resistance and the emitter of described second triode simultaneously, the base stage of described second triode is connected with the collector electrode of described first triode and the first end of described 5th resistance simultaneously, with the first end of described 6th resistance while of the second end of described 5th resistance, the positive pole of described 5th electric capacity, the first end of described 12 resistance is connected with the collector electrode of described 3rd triode, the minus earth of described 5th electric capacity, second end of described 6th resistance is connected with the collector electrode of described second triode and the positive pole of described 4th electric capacity simultaneously, with the first end of described tenth resistance while of the negative pole of described 4th electric capacity, the first end of described 6th electric capacity, the first end of described 9th resistance is connected with the base stage of described 3rd triode, the second end of described tenth resistance simultaneously with the second end of described 6th electric capacity, the negative pole of described 7th electric capacity, the emitter of described 6th triode, the emitter of described 5th triode, second end of described 16 resistance, the first end of described 17 resistance is connected with the positive pole of described 8th electric capacity, the emitter of described 3rd triode is connected with the second end of described 11 resistance and the base stage of described 4th triode simultaneously, with the base stage of described 5th triode while of the collector electrode of described 4th triode, the base stage of described 6th triode is connected with the first end of described 14 resistance, the positive pole of described 7th electric capacity is connected with the first end of described 13 resistance and the second end of described 14 resistance simultaneously, with the second end of described 12 resistance while of the second end of described 13 resistance, the collector electrode of described 5th triode is connected with the positive pole of described DC power supply, and the negative pole of described 8th electric capacity is connected with the first end of described loud speaker, the second end ground connection of described loud speaker.
Particularly, described first electric capacity, described 3rd electric capacity, described 4th electric capacity, described 5th electric capacity, described 7th electric capacity and described 8th electric capacity are polar capacitor, described 6th triode is positive-negative-positive, and described first triode, described second triode, described 3rd triode, described 4th triode and described 5th triode are NPN type.
Beneficial effect of the present invention is:
The present invention is the audio-frequency power amplifier that a kind of distortion factor is little, and it is within the scope of specified continuous power, input no matter short circuit or open circuit, hum and noise are all very little, and caloric value is few, and in the process of signal transacting, the distortion factor is less, has the value of higher penetration and promotion.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the audio-frequency power amplifier that a kind of distortion factor of the present invention is little.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present invention includes the first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, 12 resistance R12, 13 resistance R13, 14 resistance R14, 15 resistance R15, 16 resistance R16, 17 resistance R17, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, first triode Q1, second triode Q2, 3rd triode Q3, 4th triode Q4, 5th triode Q5, 6th triode Q6, DC power supply DC and loud speaker BL, the first end of the first resistance R1 is connected with signal input part INT, and second end of the first resistance R1 is connected with the negative pole of the first electric capacity C1, the positive pole of the first electric capacity C1 simultaneously with the first end of the second electric capacity C2, the base stage of the first triode Q1, the first end of the second resistance R2 is connected with the first end of the 3rd resistance R3, second end of the second electric capacity C2 simultaneously with the first end of the second resistance R2, the negative pole of the 3rd electric capacity C3, the emitter of the first triode Q1, the first end of the 8th resistance R8, the first end of the 9th resistance R9, the first end of the 11 resistance R11, the emitter of the 4th triode Q4, the collector electrode of the 6th triode Q6, the first end of the 16 resistance R16 is connected with the first end of the 9th electric capacity C9 and ground connection, the positive pole of the 3rd electric capacity C3 is connected with the first end of the 4th resistance R4, second end of the 4th resistance R4 is connected with second end of the 3rd resistance R3 and the first end of the 7th resistance R7 simultaneously, second end of the 7th resistance R7 is connected with second end of the 8th resistance R8 and the emitter of the second triode Q2 simultaneously, the base stage of the second triode Q2 is connected with the collector electrode of the first triode Q1 and the first end of the 5th resistance R5 simultaneously, with the first end of the 6th resistance R6 while of second end of the 5th resistance R5, the positive pole of the 5th electric capacity C5, the first end of the 12 resistance R12 is connected with the collector electrode of the 3rd triode Q3, the minus earth of the 5th electric capacity C5, second end of the 6th resistance R6 is connected with the collector electrode of the second triode Q2 and the positive pole of the 4th electric capacity C4 simultaneously, with the first end of the tenth resistance R10 while of the negative pole of the 4th electric capacity C4, the first end of the 6th electric capacity C6, the first end of the 9th resistance R9 is connected with the base stage of the 3rd triode Q3, second end of the tenth resistance R10 simultaneously with second end of the 6th electric capacity C6, the negative pole of the 7th electric capacity C7, the emitter of the 6th triode Q6, the emitter of the 5th triode Q5, second end of the 16 resistance R16, the first end of the 17 resistance R17 is connected with the positive pole of the 8th electric capacity C8, the emitter of the 3rd triode Q3 is connected with second end of the 11 resistance R11 and the base stage of the 4th triode Q4 simultaneously, with the base stage of the 5th triode Q5 while of the collector electrode of the 4th triode Q4, the base stage of the 6th triode Q6 is connected with the first end of the 14 resistance R14, the positive pole of the 7th electric capacity C7 is connected with the first end of the 13 resistance R13 and second end of the 14 resistance R14 simultaneously, with second end of the 12 resistance R12 while of second end of the 13 resistance R13, the collector electrode of the 5th triode Q5 is connected with the positive pole of DC power supply DC, and the negative pole of the 8th electric capacity C8 is connected with the first end of loud speaker BL, the second end ground connection of loud speaker BL.Wherein the first electric capacity C1, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 7th electric capacity C7 and the 8th electric capacity C8 are polar capacitor, 6th triode Q6 is positive-negative-positive, and the first triode Q1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4 and the 5th triode Q5 are NPN type.
Claims (2)
1. the audio-frequency power amplifier that the distortion factor is little, is characterized in that: comprise the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, 14 resistance, 15 resistance, 16 resistance, 17 resistance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, first triode, second triode, 3rd triode, 4th triode, 5th triode, 6th triode, DC power supply and loud speaker, the first end of described first resistance is connected with signal input part, and the second end of described first resistance is connected with the negative pole of described first electric capacity, the positive pole of described first electric capacity simultaneously with the first end of described second electric capacity, the base stage of described first triode, the first end of described second resistance is connected with the first end of described 3rd resistance, the second end of described second electric capacity simultaneously with the first end of described second resistance, the negative pole of described 3rd electric capacity, the emitter of described first triode, the first end of described 8th resistance, the first end of described 9th resistance, the first end of described 11 resistance, the emitter of described 4th triode, the collector electrode of described 6th triode, the first end of described 16 resistance is connected with the first end of described 9th electric capacity and ground connection, the positive pole of described 3rd electric capacity is connected with the first end of described 4th resistance, second end of described 4th resistance is connected with the second end of described 3rd resistance and the first end of described 7th resistance simultaneously, second end of described 7th resistance is connected with the second end of described 8th resistance and the emitter of described second triode simultaneously, the base stage of described second triode is connected with the collector electrode of described first triode and the first end of described 5th resistance simultaneously, with the first end of described 6th resistance while of the second end of described 5th resistance, the positive pole of described 5th electric capacity, the first end of described 12 resistance is connected with the collector electrode of described 3rd triode, the minus earth of described 5th electric capacity, second end of described 6th resistance is connected with the collector electrode of described second triode and the positive pole of described 4th electric capacity simultaneously, with the first end of described tenth resistance while of the negative pole of described 4th electric capacity, the first end of described 6th electric capacity, the first end of described 9th resistance is connected with the base stage of described 3rd triode, the second end of described tenth resistance simultaneously with the second end of described 6th electric capacity, the negative pole of described 7th electric capacity, the emitter of described 6th triode, the emitter of described 5th triode, second end of described 16 resistance, the first end of described 17 resistance is connected with the positive pole of described 8th electric capacity, the emitter of described 3rd triode is connected with the second end of described 11 resistance and the base stage of described 4th triode simultaneously, with the base stage of described 5th triode while of the collector electrode of described 4th triode, the base stage of described 6th triode is connected with the first end of described 14 resistance, the positive pole of described 7th electric capacity is connected with the first end of described 13 resistance and the second end of described 14 resistance simultaneously, with the second end of described 12 resistance while of the second end of described 13 resistance, the collector electrode of described 5th triode is connected with the positive pole of described DC power supply, and the negative pole of described 8th electric capacity is connected with the first end of described loud speaker, the second end ground connection of described loud speaker.
2. the audio-frequency power amplifier that a kind of distortion factor according to claim 1 is little, it is characterized in that: described first electric capacity, described 3rd electric capacity, described 4th electric capacity, described 5th electric capacity, described 7th electric capacity and described 8th electric capacity are polar capacitor, described 6th triode is positive-negative-positive, and described first triode, described second triode, described 3rd triode, described 4th triode and described 5th triode are NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526258.0A CN104601120A (en) | 2013-10-30 | 2013-10-30 | Audio power amplifier with small degree of distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526258.0A CN104601120A (en) | 2013-10-30 | 2013-10-30 | Audio power amplifier with small degree of distortion |
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| Publication Number | Publication Date |
|---|---|
| CN104601120A true CN104601120A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310526258.0A Pending CN104601120A (en) | 2013-10-30 | 2013-10-30 | Audio power amplifier with small degree of distortion |
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| CN (1) | CN104601120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024660A (en) * | 2015-06-05 | 2015-11-04 | 苏州经贸职业技术学院 | Power amplifier circuit with novel structure |
-
2013
- 2013-10-30 CN CN201310526258.0A patent/CN104601120A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024660A (en) * | 2015-06-05 | 2015-11-04 | 苏州经贸职业技术学院 | Power amplifier circuit with novel structure |
| CN105024660B (en) * | 2015-06-05 | 2018-01-05 | 苏州经贸职业技术学院 | A kind of novel power amplifier circuit of structure |
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Application publication date: 20150506 |