CN205490109U - Computer audio frequency supply circuit - Google Patents
Computer audio frequency supply circuit Download PDFInfo
- Publication number
- CN205490109U CN205490109U CN201620031101.XU CN201620031101U CN205490109U CN 205490109 U CN205490109 U CN 205490109U CN 201620031101 U CN201620031101 U CN 201620031101U CN 205490109 U CN205490109 U CN 205490109U
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- China
- Prior art keywords
- resistance
- amplifier
- input end
- reverse input
- outfan
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Abstract
The utility model provides a computer audio frequency supply circuit, wherein the reverse input end of second amplifier is connected to the output of first amplifier, the one end of 1 the 5th resistance is connected to the reverse input end of first amplifier, it has electric capacity and the 6th resistance to connect in parallel between the output of first amplifier and the other end of the 5th resistance, the reverse input end of second amplifier is supply circuit's input, not the positive going input termination ground of second amplifier, the output of second amplifier connects the one end of first resistance, second resistance and third resistance respectively, the reverse input end of another termination second amplifier of first resistance, the reverse input end of third amplifier connects the other end of second resistance, third resistance, parallelly connected between the reverse input end of third amplifier and the output have fourth resistance. The utility model provides a computer audio frequency supply circuit can accomplish the enlargeing of input voltage, and can eliminate the harmonic part in the signal after enlargeing.
Description
Technical field
The present invention relates to technical field of electronic products, particularly a kind of computer audio frequency power supply circuits.
Background technology
The computer audio frequency power supply circuits that prior art provides the most all comprise some harmonic circuits, have influence on audio frequency
Broadcast quality, prior art does not the most provide the circuit that can amplify and may filter that harmonic wave.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of computer audio frequency power supply circuits, and it includes
First amplifier, the second amplifier, the 3rd amplifier, the outfan of described first amplifier connects second and puts
The reverse input end of big device, the reverse input end of described first amplifier connects one end of one the 5th resistance, institute
State and between the outfan of the first amplifier and the other end of the 5th resistance, be parallel with an electric capacity and the 6th resistance, institute
State the outfan of another termination power supply circuits of the 5th resistance, the positive input ground connection of described first amplifier；
The input that reverse input end is power supply circuits of described second amplifier, described second amplifier is just
To input end grounding, the outfan of described second amplifier connects the first resistance, the second resistance and the 3rd electricity respectively
One end of resistance, described first resistance another terminate the reverse input end of the second amplifier；
The reverse input end of described 3rd amplifier connects the second resistance, the other end of the 3rd resistance, and the described 3rd
The 4th resistance, the outfan of described 3rd amplifier it is parallel with between reverse input end and the outfan of amplifier
Outfan for power supply circuits.
It is preferred that described first resistance, the second resistance, the resistance of the 3rd resistance are respectively 2K Ω, described
Four resistance, the 5th resistance, the resistance of the 6th resistance are respectively 6K Ω.
It is preferred that described electric capacity is 2F.
This utility model has the advantages that
The computer audio frequency power supply circuits that this utility model provides can complete the amplification to input voltage, and can disappear
Except the harmonic in the signal after amplifying.
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.
The computer audio frequency power supply circuits composition schematic diagram 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.
For solving above-mentioned technical problem, this utility model embodiment provides a kind of computer audio frequency power supply circuits,
It includes the first amplifier U1, the second amplifier U2, the 3rd amplifier U3, the output of the first amplifier U1
End connects the reverse input end of the second amplifier U2, and the reverse input end of the first amplifier U1 connects the 5th electricity
One end of resistance R5, is parallel with electric capacity between outfan and the other end of the 5th resistance R5 of the first amplifier U2
The outfan of another termination power supply circuits of C and the 6th resistance R6, the 5th resistance R5, the first amplifier U1
Positive input ground connection；
The input that reverse input end is power supply circuits of the second amplifier U2, the forward of the second amplifier U2
Input end grounding, the outfan of the second amplifier U2 meets the first resistance R1, the second resistance R2 and the 3rd respectively
One end of resistance R3, the first resistance R1 another terminate the reverse input end of the second amplifier U2；
The reverse input end of the 3rd amplifier U3 connects the second resistance R2, the other end of the 3rd resistance R3, and the 3rd
Being parallel with the 4th resistance R4 between reverse input end and the outfan of amplifier U3, the 3rd amplifier U3's is defeated
Go out the end outfan for power supply circuits.
Wherein the first resistance R1, the second resistance R2, the resistance of the 3rd resistance R3 are respectively 2K Ω, the 4th electricity
Resistance R4, the 5th resistance R5, the resistance of the 6th resistance R6 are respectively 6K Ω.The electric capacity C that the present embodiment provides
Capacitance be 2F.
The computer audio frequency power supply circuits that this utility model provides can complete the amplification to input voltage, and can disappear
Except the harmonic in the signal after amplifying.
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 (3)
1. computer audio frequency power supply circuits, it is characterised in that include the first amplifier, the second amplifier,
3rd amplifier, the outfan of described first amplifier connects the reverse input end of the second amplifier, and described
The reverse input end of one amplifier connects one end of one the 5th resistance, the outfan of described first amplifier and the
An electric capacity and the 6th resistance it is parallel with, another termination power supply of described 5th resistance between the other end of five resistance
The outfan of circuit, the positive input ground connection of described first amplifier；
The input that reverse input end is power supply circuits of described second amplifier, described second amplifier is just
To input end grounding, the outfan of described second amplifier connects the first resistance, the second resistance and the 3rd electricity respectively
One end of resistance, described first resistance another terminate the reverse input end of the second amplifier；
The reverse input end of described 3rd amplifier connects the second resistance, the other end of the 3rd resistance, and the described 3rd
The 4th resistance, the outfan of described 3rd amplifier it is parallel with between reverse input end and the outfan of amplifier
Outfan for power supply circuits.
2. computer audio frequency power supply circuits as claimed in claim 1, it is characterised in that described first resistance,
Second resistance, the resistance of the 3rd resistance are respectively 2K Ω, described 4th resistance, the 5th resistance, the 6th resistance
Resistance be respectively 6K Ω.
3. computer audio frequency power supply circuits as claimed in claim 1, it is characterised in that described electric capacity is 2F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031101.XU CN205490109U (en) | 2016-01-11 | 2016-01-11 | Computer audio frequency supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031101.XU CN205490109U (en) | 2016-01-11 | 2016-01-11 | Computer audio frequency supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490109U true CN205490109U (en) | 2016-08-17 |
Family
ID=56668503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620031101.XU Expired - Fee Related CN205490109U (en) | 2016-01-11 | 2016-01-11 | Computer audio frequency supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685198A (en) * | 2016-12-31 | 2017-05-17 | 马鞍山格尚智能装备有限公司 | Player power supply control system |
-
2016
- 2016-01-11 CN CN201620031101.XU patent/CN205490109U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685198A (en) * | 2016-12-31 | 2017-05-17 | 马鞍山格尚智能装备有限公司 | Player power supply control system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170111 |