CN205545869U - Handheld terminal audio frequency supply circuit - Google Patents
Handheld terminal audio frequency supply circuit Download PDFInfo
- Publication number
- CN205545869U CN205545869U CN201620031134.4U CN201620031134U CN205545869U CN 205545869 U CN205545869 U CN 205545869U CN 201620031134 U CN201620031134 U CN 201620031134U CN 205545869 U CN205545869 U CN 205545869U
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- CN
- China
- Prior art keywords
- amplifier
- resistance
- reverse input
- input end
- outfan
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a handheld terminal audio frequency supply circuit, wherein the one end of a third resistance is connected to the output of first amplifier, parallelly connected between the reverse input end of first amplifier and the output have first electric capacity, the one end of a fourth resistance is connected to the reverse input end of first amplifier, a first resistance, third resistance are connected to the reverse input end of second amplifier, parallelly connected between the reverse input end of second amplifier and the output have second electric capacity and a second resistance, the one end of the 5th resistance is connected to the output of second amplifier, the other end of the 5th resistance is connected to the reverse input end of third amplifier, parallelly connected between the output of third amplifier and the reverse input end have the 6th resistance. The utility model provides a handheld terminal audio frequency supply circuit can provide stable current input for the audio frequency unit, guarantees that output tone quality can not receive arrival current's influence.
Description
Technical field
This utility model relates to handheld terminal technical field, particularly a kind of handheld terminal audio power circuit.
Background technology
The handheld terminal audio power circuit that prior art provides, it may appear that the situation that output voltage is unstable, right
Output tonequality produces impact, and serious also can cause the infringement to ear.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of handheld terminal audio power circuit, its
Including the first amplifier, the second amplifier, the 3rd amplifier, the first electric capacity, the second electric capacity；
The outfan of wherein said first amplifier connects one end of one the 3rd resistance, described first amplifier
The first electric capacity it is parallel with between reverse input end and outfan, the positive input ground connection of described first amplifier,
The reverse input end of described first amplifier connects one end of one the 4th resistance；
The reverse input end of described second amplifier connects one first resistance, the 3rd resistance, described first resistance
The input that the other end is power supply circuits, between reverse input end and the outfan of described second amplifier also
Being associated with the second electric capacity and one second resistance, the positive input ground connection of described second amplifier, described second puts
The outfan of big device connects one end of the 5th resistance, and the reverse input end of described 3rd amplifier connects the 5th electricity
The other end of resistance, is parallel with the 6th resistance between outfan and the reverse input end of described 3rd amplifier, institute
State the positive input ground connection of the 3rd amplifier, the output that outfan is power supply circuits of described 3rd amplifier
End.
This utility model has the advantages that
The handheld terminal audio power circuit that this utility model provides can provide stable electric current for audio unit
Input, it is ensured that output tonequality will not be affected by input current.
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 handheld terminal audio power circuit 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.
This utility model embodiment provides a kind of handheld terminal audio power circuit, and it includes the first amplifier
U1, the second amplifier U2, the 3rd amplifier U3, the first electric capacity C1, the second electric capacity C2；
Wherein the outfan of the first amplifier U1 connects one end of the 3rd resistance R3, and the first amplifier U1's is anti-
To being parallel with the first electric capacity C1 between input and outfan, the positive input ground connection of the first amplifier U1,
The reverse input end of the first amplifier U1 connects one end of the 4th resistance R4；
The reverse input end of the second amplifier U2 connects the first resistance R1, the 3rd resistance R3, the first resistance R1
The input that the other end is power supply circuits, in parallel between reverse input end and the outfan of the second amplifier U2
There are the second electric capacity C2 and the second resistance R2, the positive input ground connection of the second amplifier U2, the second amplifier
The outfan of U2 connects one end of the 5th resistance R5, and the reverse input end of the 3rd amplifier U3 connects the 5th electricity
The other end of resistance R5, is parallel with the 6th resistance R6 between outfan and the reverse input end of the 3rd amplifier U3,
The positive input ground connection of the 3rd amplifier U3, the output that outfan is power supply circuits of the 3rd amplifier U3
End.
The handheld terminal audio power circuit that this utility model provides can provide stable electric current for audio unit
Input, it is ensured that output tonequality will not be affected by input current.
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. a handheld terminal audio power circuit, it is characterised in that include the first amplifier, the second amplification
Device, the 3rd amplifier, the first electric capacity, the second electric capacity；
The outfan of wherein said first amplifier connects one end of one the 3rd resistance, described first amplifier
The first electric capacity it is parallel with between reverse input end and outfan, the positive input ground connection of described first amplifier,
The reverse input end of described first amplifier connects one end of one the 4th resistance；
The reverse input end of described second amplifier connects one first resistance, the 3rd resistance, described first resistance
The input that the other end is power supply circuits, between reverse input end and the outfan of described second amplifier also
Being associated with the second electric capacity and one second resistance, the positive input ground connection of described second amplifier, described second puts
The outfan of big device connects one end of the 5th resistance, and the reverse input end of described 3rd amplifier connects the 5th electricity
The other end of resistance, is parallel with the 6th resistance between outfan and the reverse input end of described 3rd amplifier, institute
State the positive input ground connection of the 3rd amplifier, the output that outfan is power supply circuits of described 3rd amplifier
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031134.4U CN205545869U (en) | 2016-01-11 | 2016-01-11 | Handheld terminal audio frequency supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031134.4U CN205545869U (en) | 2016-01-11 | 2016-01-11 | Handheld terminal audio frequency supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205545869U true CN205545869U (en) | 2016-08-31 |
Family
ID=56763598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620031134.4U Expired - Fee Related CN205545869U (en) | 2016-01-11 | 2016-01-11 | Handheld terminal audio frequency supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205545869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658294A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山格尚智能装备有限公司 | Audio equipment power supply device based on voltage stabilizing circuit |
| 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 CN201620031134.4U patent/CN205545869U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658294A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山格尚智能装备有限公司 | Audio equipment power supply device based on voltage stabilizing circuit |
| 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: 20160831 Termination date: 20170111 |