CN205490453U - Intelligent terminal audio power amplifier filter circuit - Google Patents
Intelligent terminal audio power amplifier filter circuit Download PDFInfo
- Publication number
- CN205490453U CN205490453U CN201620031213.5U CN201620031213U CN205490453U CN 205490453 U CN205490453 U CN 205490453U CN 201620031213 U CN201620031213 U CN 201620031213U CN 205490453 U CN205490453 U CN 205490453U
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- resistance
- amplifier
- electric capacity
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- utility
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Abstract
The utility model provides an intelligent terminal audio power amplifier filter circuit, audio frequency analog signal input is connected to wherein first resistance one end, the reverse input end of first amplifier is connected to the first resistance other end, the one end of first electric capacity is connected to first amplifier positive going input end, and the one end of second resistance is connected to the other end of first electric capacity, the one end of third resistance and the one end of second electric capacity are connected to the output of first amplifier, the one end of the 6th resistance is connected to the second electric capacity other end, the other end of the other end connection third resistance of the 6th resistance, the one end of fourth resistance, the reverse input end of second amplifier, the one end of third electric capacity is connected to the positive going input end of second amplifier, the one end of the 5th resistance is connected to the other end of third electric capacity, the other end and the output of second amplifier of fourth resistance are connected. The utility model provides a filtering harmonic part when amplifying audio signal.
Description
Technical field
This utility model belongs to intelligent terminal's technical field, and particularly a kind of intelligent terminal's audio frequency amplifies filtered electrical
Road.
Background technology
What prior art provided can only also can put harmonic signal by terminal audio frequency circuit while amplifying signal
Greatly, and export together with audio signal, the audio quality of impact output.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of intelligent terminal's audio frequency filtering and amplifying circuit,
It include the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance,
One electric capacity, the second electric capacity, the 3rd electric capacity, the first amplifier and the second amplifier；
Described first resistance one end connects audio analog signals input, and the described first resistance other end connects the
The reverse input end of one amplifier, described first amplifier positive input connects one end of the first electric capacity, the
The other end of one electric capacity connects one end of the second resistance, the other end ground connection of the second resistance, and described first amplifies
The outfan of device connects one end of the 3rd resistance and one end of the second electric capacity, and the described second electric capacity other end connects
One end of 6th resistance, the other end of the 6th resistance connect the other end of the 3rd resistance, one end of the 4th resistance,
The reverse input end of the second amplifier, the positive input of described second amplifier connects one end of the 3rd electric capacity,
The other end of described 3rd electric capacity connects one end of the 5th resistance, the other end ground connection of described 5th resistance, institute
The outfan of the other end and the second amplifier of stating the 4th resistance connects, and the outfan of described second amplifier is
Analog signal output.
This utility model has the advantages that
Intelligent terminal's audio frequency filtering and amplifying circuit that this utility model provides is filtered while amplifying audio signal
Except harmonic, it is ensured that the intensity of audio signal, also filtered out the harmonic of doping in signal simultaneously.
Certainly, implement arbitrary product of the present utility model to it is not absolutely required to reach all the above simultaneously
Advantage.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, institute embodiment will be described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only this practicality
Some novel embodiments, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Intelligent terminal's audio frequency filtering and amplifying circuit structural representation that Fig. 1 provides for this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment
Case is clearly and completely described, it is clear that described embodiment is only that this utility model part is real
Execute example rather than whole embodiments.Based on the embodiment in this utility model, ordinary skill people
All other embodiments that member is obtained under not making creative work premise, broadly fall into this utility model
The scope of protection.
This utility model embodiment provides a kind of intelligent terminal's audio frequency filtering and amplifying circuit, and it includes the first electricity
Resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6,
First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the first amplifier U1 and the second amplifier U2；
First resistance R1 one end connects audio analog signals input, and the first resistance R1 other end connects first
The reverse input end of amplifier U1, the first amplifier U1 positive input connects one end of the first electric capacity C1,
The other end of the first electric capacity C1 connects one end of the second resistance R2, the other end ground connection of the second resistance R2, and
The outfan of one amplifier U1 connects one end of the 3rd resistance R3 and one end of the second electric capacity C2, the second electric capacity
The C2 other end connects one end of the 6th resistance R6, and the other end of the 6th resistance R6 connects the another of the 3rd resistance R3
One end, one end of the 4th resistance R4, the reverse input end of the second amplifier U2, the second amplifier U2 is just
Connect one end of the 3rd electric capacity C3 to input, the other end of the 3rd electric capacity C3 connects the one of the 5th resistance R5
End, the other end ground connection of the 5th resistance R5, the other end of the 4th resistance R4 and the output of the second amplifier U2
End connects, and the outfan of the second amplifier U2 is analog signal output.
Intelligent terminal's audio frequency filtering and amplifying circuit that this utility model provides is filtered while amplifying audio signal
Except harmonic, it is ensured that the intensity of audio signal, also filtered out the harmonic of doping in signal simultaneously.
This utility model preferred embodiment disclosed above is only intended to help to illustrate this utility model.The most real
Execute example and do not have all of details of detailed descriptionthe, be also not intended to the specific embodiment party that this utility model is only described
Formula.Obviously, according to the content of this specification, can make many modifications and variations.This specification is chosen and has
Body describes these embodiments, is to preferably explain principle of the present utility model and actual application, so that
Skilled artisan can be best understood by and utilize this utility model.This utility model is only by right
Claim and four corner thereof and the restriction of equivalent.
Claims (1)
1. intelligent terminal's audio frequency filtering and amplifying circuit, it is characterised in that include the first resistance, the second electricity
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 the second amplifier；
Described first resistance one end connects audio analog signals input, and the described first resistance other end connects the
The reverse input end of one amplifier, described first amplifier positive input connects one end of the first electric capacity, the
The other end of one electric capacity connects one end of the second resistance, the other end ground connection of the second resistance, and described first amplifies
The outfan of device connects one end of the 3rd resistance and one end of the second electric capacity, and the described second electric capacity other end connects
One end of 6th resistance, the other end of the 6th resistance connect the other end of the 3rd resistance, one end of the 4th resistance,
The reverse input end of the second amplifier, the positive input of described second amplifier connects one end of the 3rd electric capacity,
The other end of described 3rd electric capacity connects one end of the 5th resistance, the other end ground connection of described 5th resistance, institute
The outfan of the other end and the second amplifier of stating the 4th resistance connects, and the outfan of described second amplifier is
Analog signal output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031213.5U CN205490453U (en) | 2016-01-11 | 2016-01-11 | Intelligent terminal audio power amplifier filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031213.5U CN205490453U (en) | 2016-01-11 | 2016-01-11 | Intelligent terminal audio power amplifier filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490453U true CN205490453U (en) | 2016-08-17 |
Family
ID=56668621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620031213.5U Expired - Fee Related CN205490453U (en) | 2016-01-11 | 2016-01-11 | Intelligent terminal audio power amplifier filter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856399A (en) * | 2016-12-31 | 2017-06-16 | 马鞍山格尚智能装备有限公司 | A kind of communication apparatus conveys signal amplification circuit filter |
-
2016
- 2016-01-11 CN CN201620031213.5U patent/CN205490453U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856399A (en) * | 2016-12-31 | 2017-06-16 | 马鞍山格尚智能装备有限公司 | A kind of communication apparatus conveys signal amplification circuit filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |