CN106856399A - A kind of communication apparatus conveys signal amplification circuit filter - Google Patents
A kind of communication apparatus conveys signal amplification circuit filter Download PDFInfo
- Publication number
- CN106856399A CN106856399A CN201611265492.2A CN201611265492A CN106856399A CN 106856399 A CN106856399 A CN 106856399A CN 201611265492 A CN201611265492 A CN 201611265492A CN 106856399 A CN106856399 A CN 106856399A
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- amplifier
- connects
- resistor
- Prior art date
- 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.)
- Pending
Links
- 230000003321 amplification Effects 0.000 title claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 7
- 230000005236 sound signal Effects 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/372—Noise reduction and elimination in amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
Abstract
The invention provides a kind of communication apparatus conveying signal amplification circuit filter,First resistor one end therein connects audio analog signals input,The first resistor other end connects the reverse input end of the first amplifier,The first amplifier positive input connects one end of the first electric capacity,The other end of the first electric capacity connects one end of second resistance,One end of the output end connection 3rd resistor of first amplifier and one end of the second electric capacity,The second electric capacity other end connects one end of the 6th resistance,The other end of the 6th resistance connects the other end of 3rd resistor,One end of 4th resistance,The reverse input end of the second amplifier,The positive input of second amplifier connects one end of the 3rd electric capacity,The other end of the 3rd electric capacity connects one end of the 5th resistance,The other end of the 4th resistance is connected with the output end of the second amplifier.The present invention provides and harmonic is filtered while amplifying to audio signal.
Description
Technical field
The invention belongs to intelligent terminal technical field, particularly a kind of communication apparatus conveying signal amplification circuit filter.
Background technology
Prior art provide can only terminal audio frequency circuit harmonic signal can also be amplified while amplifying to signal, and
And exported together with audio signal, influence the audio quality of output.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of communication apparatus conveying signal amplification circuit filter, its bag
Include first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity,
Three electric capacity, the first amplifier and the second amplifier；
Described first resistor one end connects audio analog signals input, and the first resistor other end connection first is amplified
The reverse input end of device, the first amplifier positive input connects one end of the first electric capacity, and the other end of the first electric capacity connects
Connect one end of second resistance, the other end ground connection of second resistance, the one of the output end connection 3rd resistor of first amplifier
End and one end of the second electric capacity, the second electric capacity other end connect one end of the 6th resistance, the other end connection of the 6th resistance
The other end of 3rd resistor, one end of the 4th resistance, the reverse input end of the second amplifier, second amplifier it is positive defeated
Enter one end of the 3rd electric capacity of end connection, the other end of the 3rd electric capacity connects one end of the 5th resistance, the 5th resistance
The other end is grounded, and the other end of the 4th resistance is connected with the output end of the second amplifier, the output of second amplifier
It is analog signal output to hold.
The invention has the advantages that：
The intelligent terminal audio filtering and amplifying circuit that the present invention is provided filters harmonic wave portion while amplifying to audio signal
Point, it is ensured that the intensity of audio signal, while the harmonic adulterated in having also filtered out signal.
Certainly, implement any product of the invention to it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, uses required for being described to embodiment below
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
Fig. 1 is intelligent terminal audio filtering and amplifying circuit structural representation provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the invention provides a kind of communication apparatus conveying signal amplification circuit filter, it include first resistor R1,
Second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first electric capacity C1, the second electric capacity C2,
3rd electric capacity C3, the first amplifier U1 and the second amplifier U2；
First resistor R1 one end connects audio analog signals input, and the first resistor R1 other ends connect the first amplifier U1
Reverse input end, the first amplifier U1 positive inputs connect one end of the first electric capacity C1, and the other end of the first electric capacity C1 connects
Meet one end of second resistance R2, the other end ground connection of second resistance R2, the output end connection 3rd resistor R3 of the first amplifier U1
One end and the second electric capacity C2 one end, the second electric capacity C2 other ends connect one end of the 6th resistance R6, and the 6th resistance R6's is another
One end connects the other end, one end of the 4th resistance R4, the reverse input end of the second amplifier U2 of 3rd resistor R3, and second amplifies
The positive input of device U2 connects one end of the 3rd electric capacity C3, and the other end of the 3rd electric capacity C3 connects one end of the 5th resistance R5,
The other end ground connection of the 5th resistance R5, the other end of the 4th resistance R4 is connected with the output end of the second amplifier U2, and second amplifies
The output end of device U2 is analog signal output.
The intelligent terminal audio filtering and amplifying circuit that the present invention is provided filters harmonic wave portion while amplifying to audio signal
Point, it is ensured that the intensity of audio signal, while the harmonic adulterated in having also filtered out signal.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All of details is described, it is only described specific embodiment that the invention is not limited yet.Obviously, according to the content of this specification,
Can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (1)
1. a kind of communication apparatus conveys signal amplification circuit filter, it is characterised in that including first resistor, second resistance, the 3rd
Resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first amplifier and second
Amplifier；
Described first resistor one end connects audio analog signals input, and the first resistor other end connects the first amplifier
Reverse input end, the first amplifier positive input connects one end of the first electric capacity, the other end connection of the first electric capacity the
One end of two resistance, second resistance the other end ground connection, first amplifier output end connection 3rd resistor one end with
One end of second electric capacity, the second electric capacity other end connects one end of the 6th resistance, the other end connection the 3rd of the 6th resistance
The other end of resistance, one end of the 4th resistance, the reverse input end of the second amplifier, the positive input of second amplifier
Connect one end of the 3rd electric capacity, the other end of the 3rd electric capacity connects one end of the 5th resistance, the 5th resistance it is another
End ground connection, the other end of the 4th resistance is connected with the output end of the second amplifier, and the output end of second amplifier is
Analog signal output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265492.2A CN106856399A (en) | 2016-12-31 | 2016-12-31 | A kind of communication apparatus conveys signal amplification circuit filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265492.2A CN106856399A (en) | 2016-12-31 | 2016-12-31 | A kind of communication apparatus conveys signal amplification circuit filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106856399A true CN106856399A (en) | 2017-06-16 |
Family
ID=59126466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611265492.2A Pending CN106856399A (en) | 2016-12-31 | 2016-12-31 | A kind of communication apparatus conveys signal amplification circuit filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106856399A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205490453U (en) * | 2016-01-11 | 2016-08-17 | 马鞍山瑞祥软件有限公司 | Intelligent terminal audio power amplifier filter circuit |
-
2016
- 2016-12-31 CN CN201611265492.2A patent/CN106856399A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205490453U (en) * | 2016-01-11 | 2016-08-17 | 马鞍山瑞祥软件有限公司 | Intelligent terminal audio power amplifier filter circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170616 |
|
| WD01 | Invention patent application deemed withdrawn after publication |