CN102624336A - Electronic device and method for increasing output power of electronic device - Google Patents
Electronic device and method for increasing output power of electronic device Download PDFInfo
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- CN102624336A CN102624336A CN2012100580328A CN201210058032A CN102624336A CN 102624336 A CN102624336 A CN 102624336A CN 2012100580328 A CN2012100580328 A CN 2012100580328A CN 201210058032 A CN201210058032 A CN 201210058032A CN 102624336 A CN102624336 A CN 102624336A
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- 238000009434 installation Methods 0.000 claims description 36
- 230000007423 decrease Effects 0.000 claims description 6
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- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 5
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- 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
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Abstract
The invention relates to an electronic device, which comprises an earphone interface, a second DC/DC booster, a power amplifier and a central processing unit connected with the second DC/DC booster and the power amplifier, wherein the central processing unit judges whether the output power of the earphone interface is suitable, outputs a pulse width modulation signal to the second DC/DC booster if the output power of the earphone interface is not suitable, enables the output voltage to be boosted by the second DC/DC booster, and the second DC/DC booster boosts the output voltage and outputs the output voltage to the power amplifier; and the power amplifier receives the voltage output by the second DC/DC booster and then increases the output power. The electronic device disclosed by the invention provides a method for increasing the output power of the electronic device.
Description
Technical field
The present invention relates to a kind of electronic technology field, relate in particular to the method for the power output of a kind of electronic installation and increase electronic installation.
Background technology
The earphone impedance value of existing digital audio-visual equipment is inequality, generally between 16 ohm-600 ohm, when digital audio-visual products during at the powerful earphone of replacing; Because digital audio-visual products is more limited and export suitable power can't for powerful earphone through the power output of operational amplifier; In other words, owing to can't change back level power output, thus make audio distortions; Can't arrive high-fidelity (High-Fidelity, output effect HIFI).Therefore existing digital audio-visual equipment need improve power output.
Summary of the invention
The object of the present invention is to provide the method for the power output of a kind of electronic installation and increase electronic installation, to promote the power output of electronic installation.
The present invention provides a kind of electronic installation; Comprise earphone interface; The second dc/dc boost device, power amplifier, and the central processing unit that is connected with said second dc/dc boost device and power amplifier, wherein: central processing unit judges whether the power output of earphone interface is suitable; If it is improper; Give the second dc/dc boost device through general I/O end output pulse width modulating signal, make the second dc/dc boost device promote output voltage, the second dc/dc boost device promotes output voltage and exports to power amplifier; Power amplifier increases power output after receiving the voltage of second dc/dc boost device output.
Further, above-mentioned electronic installation also comprises power supervisor and digital to analog converter, and wherein: power supervisor is connected with central processing unit and digital to analog converter, and to central processing unit and digital to analog converter power supply is provided; Digital to analog converter is connected with central processing unit, and the digital audio and video signals of central processing unit output is changed into analog signal.
Further; Above-mentioned electronic installation; Also comprise the operational amplifier and the first dc/dc boost device, wherein: operational amplifier is connected with digital to analog converter, the first dc/dc boost device, power amplifier, and the analog signal of digital to analog converter output is carried out elementary amplification; The first dc/dc boost device is connected with central processing unit and operational amplifier, and to operational amplifier voltage is provided according to the instruction of central processing unit output.
Further, the above-mentioned second dc/dc boost device comprises first resistance, second resistance, and electric capacity, and wherein first resistance, one end is connected with the feedback end of power amplifier, and the other end is connected with second resistance and electric capacity; Second resistance, one end is connected with first resistance and electric capacity, and the other end is connected with central processing unit; Electric capacity one end is connected with first resistance and second resistance, other end ground connection.
Further; Above-mentioned central processing unit charges to electric capacity through second resistance through general I/O end output pulse width modulating signal; Make the rising of electric capacity current potential and make the feedback end current potential decline of power amplifier, thereby output voltage is risen through the dividing potential drop of first resistance.
The present invention also provides a kind of method that increases the power output of electronic installation; Comprise: central processing unit judges whether power output is suitable; If it is improper; Central processing unit is given the second dc/dc boost device through general I/O end output pulse width modulating signal, makes the second dc/dc boost device promote output voltage, and the second dc/dc boost device promotes output voltage and exports to power amplifier; Power amplifier increases power output after receiving the voltage of second dc/dc boost device output.
Further, the method for the power output of above-mentioned increase electronic installation also comprises: whether central processing unit detects earphone interface has high-power earphone to insert.
Further; The method of the power output of above-mentioned increase electronic installation; Also comprise: if there is high-power earphone to insert; Central processing unit is controlled the first dc/dc boost device and is promoted output voltage, and the first dc/dc boost device is exported to operational amplifier after promoting output voltage, and operational amplifier increases power output after receiving the voltage of lifting.
Further, the method for the power output of above-mentioned increase electronic installation also comprises: earphone interface drives earphone according to the power output that power amplifier increases.
Further; Above-mentioned central processing unit charges to electric capacity through second resistance through general I/O end output pulse width modulating signal; Make the rising of electric capacity current potential and make the feedback end current potential decline of power amplifier, thereby output voltage is risen through the dividing potential drop of first resistance.
The present invention has increased by the second dc/dc boost device and power amplifier as back level power supply automatic voltage control circuit on the basis of electronic installations such as digital audio-visual equipment, promote the power output of electronic installation.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Shown in Figure 1 for the module map of electronic installation of the present invention;
Fig. 2 is the concrete module map of the second dc/dc boost device;
Fig. 3 increases the flow chart of the method for electronic installation power output for the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Shown in Figure 1 for the module map of electronic installation of the present invention;
Electronic installation comprises central processing unit 101, power supervisor 102, memory 103, digital to analog converter 104, operational amplifier 106, power amplifier 108, the first DC-DCs (DC/DC) stepup transformer 105, the second dc/dc boost devices 107, earphone interface 109.Electronic installation can be digital audio-visual equipment.
Power supervisor 102 is connected with central processing unit 101 and digital to analog converter 104; Central processing unit 101 and power supervisor 102 and digital to analog converter 104, memory 103, the first dc/dc boost devices 105, the second dc/dc boost devices 107 connect; Digital to analog converter 104 is connected with operational amplifier 106; The first dc/dc boost device 105 is connected with operational amplifier 106; The second dc/dc boost device 107 is connected with power amplifier 108; Power amplifier 108 is connected with earphone interface 109.
Digital to analog converter 104 changes into analog signal with the digital audio and video signals of central processing unit 101 outputs.Operational amplifier 106 carries out elementary amplification with the analog signal of digital to analog converter 104 outputs; The first dc/dc boost device 105 provides voltage according to the instruction of central processing unit 101 outputs to operational amplifier 106.
The operation principle of electronic installation of the present invention is following: whether central processing unit 101 detects earphone interface 109 has high-power earphone to insert; Promote output voltage if there is high-power earphone to insert the central processing unit 101 controls first dc/dc boost device 105; The first dc/dc boost device 105 is exported to operational amplifier 106 after promoting output voltages, and operational amplifier 106 increases power output after receiving the voltage of lifting; Then central processing unit 101 judges whether the power output of earphone interface 109 is suitable; If it is improper; Central processing unit 101 is given the second dc/dc boost device 107 through general I/O end output pulse width modulating signal; Make the second dc/dc boost device 107 promote output voltage, the second dc/dc boost device 107 promotes output voltage and exports to power amplifier 108; Power amplifier 108 increases power output after receiving the voltage of the second dc/dc boost device 107 output; Earphone interface 109 drives earphone according to the power output that power amplifier 108 increases, to increase earpiece volume.
Fig. 2 is the concrete module map of the second dc/dc boost device 107.
The second dc/dc boost device 107 comprises first resistance R 52, second resistance R 47, and capacitor C 97.
In the present invention; If operational amplifier 106 Maximum Power Outputs can't reach the earphone requirement; Central processing unit 101 is through general I/O end (GENERAL PURPOSE INPUT OUTPUT; GPIO) the output pulse width modulating signal, makes the rising of capacitor C 97 current potentials and makes the feedback end current potential decline of power amplifier 108 through the dividing potential drop of a R52, thereby output voltage is risen to capacitor C 97 chargings through second resistance R 47.After power amplifier 108 obtains higher voltage, export bigger power and open earphone interface 109, earphone obtains desirable power output.Central processing unit 101 can be adjusted different output voltage according to the different duty ratio of pulse width modulation signal.
Fig. 3 increases the flow chart of the method for electronic installation power output for the present invention;
In the present invention; If operational amplifier 106 Maximum Power Outputs can't reach the earphone requirement; Central processing unit 101 charges to capacitor C 97 through second resistance R 47 through general I/O end output pulse width modulating signal; Make the rising of capacitor C 97 current potentials and make the feedback end current potential decline of power amplifier 108, thereby output voltage is risen through the dividing potential drop of first resistance R 52.After power amplifier 108 obtains higher voltage, export bigger power and open earphone interface 109, make earphone obtain desirable power output.Central processing unit 101 can be adjusted different output voltage according to the different duty ratio of pulse width modulation signal.
This method has increased by the second dc/dc boost device 107 and power amplifier 108 as back level power supply automatic voltage control circuit on the basis of electronic installations such as digital audio-visual equipment, promote the power output of electronic installation.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electronic installation comprises earphone interface, it is characterized in that, also comprises the second dc/dc boost device, power amplifier, and the central processing unit that is connected with said second dc/dc boost device and power amplifier, wherein:
Central processing unit judges whether the power output of earphone interface is suitable; If it is improper; Give the second dc/dc boost device through general I/O end output pulse width modulating signal; Make the second dc/dc boost device promote output voltage, the second dc/dc boost device promotes output voltage and exports to power amplifier; Power amplifier increases power output after receiving the voltage of second dc/dc boost device output.
2. electronic installation as claimed in claim 1 is characterized in that, also comprises power supervisor and digital to analog converter, wherein:
Power supervisor is connected with central processing unit and digital to analog converter, and to central processing unit and digital to analog converter power supply is provided;
Digital to analog converter is connected with central processing unit, and the digital audio and video signals of central processing unit output is changed into analog signal.
3. electronic installation as claimed in claim 2 is characterized in that, also comprises the operational amplifier and the first dc/dc boost device, wherein:
Operational amplifier is connected with digital to analog converter, the first dc/dc boost device, power amplifier, and the analog signal of digital to analog converter output is carried out elementary amplification;
The first dc/dc boost device is connected with central processing unit and operational amplifier, and to operational amplifier voltage is provided according to the instruction of central processing unit output.
4. electronic installation as claimed in claim 3; It is characterized in that the said second dc/dc boost device comprises first resistance, second resistance, and electric capacity; Wherein first resistance, one end is connected with the feedback end of power amplifier, and the other end is connected with second resistance and electric capacity; Second resistance, one end is connected with first resistance and electric capacity, and the other end is connected with central processing unit; Electric capacity one end is connected with first resistance and second resistance, other end ground connection.
5. electronic installation as claimed in claim 4; It is characterized in that; Central processing unit charges to electric capacity through second resistance through general I/O end output pulse width modulating signal; Make the rising of electric capacity current potential and make the feedback end current potential decline of power amplifier, thereby output voltage is risen through the dividing potential drop of first resistance.
6. a method that increases the power output of electronic installation is applied to it is characterized in that like each described electronic installation of claim 1 to 5, comprising:
Central processing unit judges whether power output is suitable; If it is improper; Central processing unit is given the second dc/dc boost device through general I/O end output pulse width modulating signal; Make the second dc/dc boost device promote output voltage, the second dc/dc boost device promotes output voltage and exports to power amplifier;
Power amplifier increases power output after receiving the voltage of second dc/dc boost device output.
7. the method for the power output of increase electronic installation as claimed in claim 6 is characterized in that, also comprises: whether central processing unit detects earphone interface has high-power earphone to insert.
8. the method for the power output of increase electronic installation as claimed in claim 7; It is characterized in that; Also comprise: if there is high-power earphone to insert; Central processing unit is controlled the first dc/dc boost device and is promoted output voltage, and the first dc/dc boost device is exported to operational amplifier after promoting output voltage, and operational amplifier increases power output after receiving the voltage of lifting.
9. the method for the power output of increase electronic installation as claimed in claim 8 is characterized in that, also comprises: earphone interface drives earphone according to the power output that power amplifier increases.
10. the method for the power output of increase electronic installation as claimed in claim 6; It is characterized in that; Central processing unit charges to electric capacity through second resistance through general I/O end output pulse width modulating signal; Make the rising of electric capacity current potential and make the feedback end current potential decline of power amplifier, thereby output voltage is risen through the dividing potential drop of first resistance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100580328A CN102624336A (en) | 2012-03-07 | 2012-03-07 | Electronic device and method for increasing output power of electronic device |
| PCT/CN2012/082268 WO2013131370A1 (en) | 2012-03-07 | 2012-09-28 | Electronic device and method for increasing output power of electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100580328A CN102624336A (en) | 2012-03-07 | 2012-03-07 | Electronic device and method for increasing output power of electronic device |
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| CN102624336A true CN102624336A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100580328A Pending CN102624336A (en) | 2012-03-07 | 2012-03-07 | Electronic device and method for increasing output power of electronic device |
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| Country | Link |
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| CN (1) | CN102624336A (en) |
| WO (1) | WO2013131370A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013131370A1 (en) * | 2012-03-07 | 2013-09-12 | 福兴达科技实业（深圳）有限公司 | Electronic device and method for increasing output power of electronic device |
| CN104602154A (en) * | 2015-01-07 | 2015-05-06 | 深圳市中兴移动通信有限公司 | Full impedance headset output method, device and terminal |
| CN112148052A (en) * | 2020-09-28 | 2020-12-29 | 刘承鑫 | Portable adjustable stable alternating-current high-voltage generation system |
| CN113035215A (en) * | 2021-02-02 | 2021-06-25 | 头领科技（昆山）有限公司 | Audio signal processing chip and earphone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0969593A1 (en) * | 1998-07-02 | 2000-01-05 | Rohm Co., Ltd. | Signal processor |
| CN1422454A (en) * | 2000-02-09 | 2003-06-04 | 帕拉戴姆无线系统公司 | Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| CN101604914A (en) * | 2008-06-10 | 2009-12-16 | 尼克森微电子股份有限公司 | Direct-current voltage conversion device |
| CN201947187U (en) * | 2011-03-15 | 2011-08-24 | 西南科技大学 | Special power supply for high-power millimeter-wave solid-state power amplifier |
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| JPS61164305A (en) * | 1985-01-17 | 1986-07-25 | Matsushita Electric Ind Co Ltd | Sound signal circuit |
| CN101924520B (en) * | 2009-06-17 | 2012-11-14 | 中兴通讯股份有限公司 | Base station power amplifier and method for enhancing efficiency of base station power amplifier |
| CN102624336A (en) * | 2012-03-07 | 2012-08-01 | 深圳市福智软件技术有限公司 | Electronic device and method for increasing output power of electronic device |
-
2012
- 2012-03-07 CN CN2012100580328A patent/CN102624336A/en active Pending
- 2012-09-28 WO PCT/CN2012/082268 patent/WO2013131370A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0969593A1 (en) * | 1998-07-02 | 2000-01-05 | Rohm Co., Ltd. | Signal processor |
| CN1422454A (en) * | 2000-02-09 | 2003-06-04 | 帕拉戴姆无线系统公司 | Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| CN101604914A (en) * | 2008-06-10 | 2009-12-16 | 尼克森微电子股份有限公司 | Direct-current voltage conversion device |
| CN201947187U (en) * | 2011-03-15 | 2011-08-24 | 西南科技大学 | Special power supply for high-power millimeter-wave solid-state power amplifier |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013131370A1 (en) * | 2012-03-07 | 2013-09-12 | 福兴达科技实业（深圳）有限公司 | Electronic device and method for increasing output power of electronic device |
| CN104602154A (en) * | 2015-01-07 | 2015-05-06 | 深圳市中兴移动通信有限公司 | Full impedance headset output method, device and terminal |
| CN112148052A (en) * | 2020-09-28 | 2020-12-29 | 刘承鑫 | Portable adjustable stable alternating-current high-voltage generation system |
| CN112148052B (en) * | 2020-09-28 | 2022-10-11 | 刘承鑫 | Portable adjustable stable alternating-current high-voltage generation system |
| CN113035215A (en) * | 2021-02-02 | 2021-06-25 | 头领科技（昆山）有限公司 | Audio signal processing chip and earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013131370A1 (en) | 2013-09-12 |
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Application publication date: 20120801 |