CN203563017U - Power amplifier for mobile phone - Google Patents
Power amplifier for mobile phone Download PDFInfo
- Publication number
- CN203563017U CN203563017U CN201320727379.7U CN201320727379U CN203563017U CN 203563017 U CN203563017 U CN 203563017U CN 201320727379 U CN201320727379 U CN 201320727379U CN 203563017 U CN203563017 U CN 203563017U
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- CN
- China
- Prior art keywords
- amplifier
- electric capacity
- capacitor
- resistance
- mobile phone
- 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 discloses a power amplifier for a mobile phone. The power amplifier for the mobile phone comprises a first amplifier, a second amplifier, a first resistor to a fourth resistor, a first capacitor to a seventh capacitor, and a loudspeaker, wherein a signal input end is connected with the first end of the first capacitor, the second end of the first capacitor is connected with the input end of the first amplifier, the first end of the third resistor and the first end of the fourth resistor, the second end of the fourth resistor is connected with the second end of the third resistor, the first end of the sixth capacitor, the first end of the seventh capacitor and the output end of the second amplifier, the output end of the first amplifier is connected with the first end of the fifth capacitor, and the second end of the fifth capacitor is connected with the input end of the second capacitor. The power amplifier for the mobile phone solves the problems that at present, most of amplifiers for mobile phones are complex in structure, the manufacturing cost of the amplifiers is greatly reduced, and the power amplifier for the mobile phone has popularization value and application value.
Description
Technical field
The utility model relates to a kind of amplifier, relates in particular to a kind of power amplifier for mobile phone.
Background technology
Amplifier is a kind of device that increases signal amplitude or power, and it is the critical elements of processing signals in automation equipment.The amplification of amplifier is realized with the input signal control energy, and amplifying required power consumption is provided by the energy.For linear amplifier, output is exactly reproduction and the enhancing of input signal.For nonlinear amplifier, output becomes certain functional relation with input signal.Amplifier by processed signal physical quantities be divided into mechanical amplifier, electromechanical amplifier, electron-amplifier, surge amplifier and pneumatic amplifier etc., wherein use to such an extent that be electron-amplifier the most widely.Along with the popularization of fluidics, surge or the application of pneumatic amplifier also increases gradually.Electron-amplifier is divided into vacuum tube amplifier, crystal amplifier, solid amplifier and magnetic amplifier by active device used again, wherein most widely used with crystal amplifier again.In instrument and meter for automation, crystal amplifier is usually used in voltage amplification and the electric current amplification of signal, and principal mode has single-ended amplification and recommends amplification.In addition, be also usually used in impedance matching, isolation, current-voltage conversion, electric charge-voltage transitions (as charge amplifier) and utilize amplifier to realize the certain functional relation (as operational amplifier) between output and input.Use at present the problem that amplifier above mobile phone exists complicated structure mostly, strengthened greatly the manufacturing cost of amplifier.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem a kind of power amplifier for mobile phone.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of power amplifier for mobile phone, comprise the first amplifier, the second amplifier, the first resistance to the four resistance, the first electric capacity to the seven electric capacity and loud speaker, signal input part is connected with the first end of described the first electric capacity, the second end of described the first electric capacity respectively with the input of described the first amplifier, the first end of described the 3rd resistance is connected with the first end of described the 4th resistance, the second end of described the 4th resistance respectively with the second end of described the 3rd resistance, the first end of described the 6th electric capacity, the first end of described the 7th electric capacity is connected with the output of described the second amplifier, the output of described the first amplifier is connected with the first end of described the 5th electric capacity, the second end of described the 5th electric capacity is connected with the input of described the second electric capacity, the cathode voltage input end grounding of described the first amplifier, the cathode voltage input end grounding of described the second amplifier, the cathode voltage input of described the second amplifier respectively with the first end of described the first resistance, the first end of described the 3rd electric capacity, the first end of described the 4th electric capacity is connected with supply voltage input, the trigger end of described the second amplifier is connected with the second end of described the first resistance and the first end of described the second electric capacity respectively, the second end of described the second electric capacity, the second end of the second end of described the 3rd electric capacity and described the 4th electric capacity ground connection respectively, the second end of described the 6th electric capacity is connected with the first end of described the second resistance, the second end ground connection of described the second resistance, the second end of described the 7th electric capacity is connected with the first end of described loud speaker, the second end ground connection of described loud speaker.
The beneficial effects of the utility model are:
The utility model is a kind of power amplifier for mobile phone, has solved the problem of using at present the complicated structure that the amplifier above mobile phone exists mostly, has reduced greatly the manufacturing cost of amplifier, has the value of promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of power amplifier for mobile phone of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of power amplifier for mobile phone, comprise the first amplifier IC1, the second amplifier IC2, the first resistance R 1 is to the 4th resistance R 4, the first capacitor C 1 is to the 7th capacitor C 7 and loud speaker BL, signal input part is connected with the first end of the first capacitor C 1, the second end of the first capacitor C 1 respectively with the input of the first amplifier IC1, the first end of the 3rd resistance R 3 is connected with the first end of the 4th resistance R 4, the second end of the 4th resistance R 4 respectively with the second end of the 3rd resistance R 3, the first end of the 6th capacitor C 6, the first end of the 7th capacitor C 7 is connected with the output of the second amplifier IC2, the output of the first amplifier IC1 is connected with the first end of the 5th capacitor C 5, the second end of the 5th capacitor C 5 is connected with the input of the second capacitor C 2, the cathode voltage input end grounding of the first amplifier IC1, the cathode voltage input end grounding of the second amplifier IC2, the cathode voltage input of the second amplifier IC2 respectively with the first end of the first resistance R 1, the first end of the 3rd capacitor C 3, the first end of the 4th capacitor C 4 is connected with supply voltage input, the trigger end of the second amplifier IC2 is connected with the second end of the first resistance R 1 and the first end of the second capacitor C 2 respectively, the second end of the second capacitor C 2, the second end of the second end of the 3rd capacitor C 3 and the 4th capacitor C 4 ground connection respectively, the second end of the 6th capacitor C 6 is connected with the first end of the second resistance R 2, the second end ground connection of the second resistance R 2, the second end of the 7th capacitor C 7 is connected with the first end of loud speaker BL, the second end ground connection of loud speaker BL.
Claims (1)
1. the power amplifier for mobile phone, it is characterized in that: comprise the first amplifier, the second amplifier, the first resistance to the four resistance, the first electric capacity to the seven electric capacity and loud speaker, signal input part is connected with the first end of described the first electric capacity, the second end of described the first electric capacity respectively with the input of described the first amplifier, the first end of described the 3rd resistance is connected with the first end of described the 4th resistance, the second end of described the 4th resistance respectively with the second end of described the 3rd resistance, the first end of described the 6th electric capacity, the first end of described the 7th electric capacity is connected with the output of described the second amplifier, the output of described the first amplifier is connected with the first end of described the 5th electric capacity, the second end of described the 5th electric capacity is connected with the input of described the second electric capacity, the cathode voltage input end grounding of described the first amplifier, the cathode voltage input end grounding of described the second amplifier, the cathode voltage input of described the second amplifier respectively with the first end of described the first resistance, the first end of described the 3rd electric capacity, the first end of described the 4th electric capacity is connected with supply voltage input, the trigger end of described the second amplifier is connected with the second end of described the first resistance and the first end of described the second electric capacity respectively, the second end of described the second electric capacity, the second end of the second end of described the 3rd electric capacity and described the 4th electric capacity ground connection respectively, the second end of described the 6th electric capacity is connected with the first end of described the second resistance, the second end ground connection of described the second resistance, the second end of described the 7th electric capacity is connected with the first end of described loud speaker, the second end ground connection of described loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727379.7U CN203563017U (en) | 2013-11-18 | 2013-11-18 | Power amplifier for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727379.7U CN203563017U (en) | 2013-11-18 | 2013-11-18 | Power amplifier for mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203563017U true CN203563017U (en) | 2014-04-23 |
Family
ID=50512712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727379.7U Expired - Fee Related CN203563017U (en) | 2013-11-18 | 2013-11-18 | Power amplifier for mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203563017U (en) |
-
2013
- 2013-11-18 CN CN201320727379.7U patent/CN203563017U/en not_active Expired - Fee Related
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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: 20140423 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |