CN1607723A - Power supply controlling apparatus of power amplifiers - Google Patents
Power supply controlling apparatus of power amplifiers Download PDFInfo
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- CN1607723A CN1607723A CN 200310111802 CN200310111802A CN1607723A CN 1607723 A CN1607723 A CN 1607723A CN 200310111802 CN200310111802 CN 200310111802 CN 200310111802 A CN200310111802 A CN 200310111802A CN 1607723 A CN1607723 A CN 1607723A
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- amplitude
- power
- control device
- supply power
- power amplifier
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Abstract
This invention relates to a power supply control device of a power amplifier including an amplifier increasing the amplitude of the input signal to over a certain amplitude out output it, a power supply device transferring supply to said amplifier, a control device controlling the voltage amplitude of said power supply according to that of the input signal and the gain variance of said amplifier. This invention amplifies the supply voltage input in the power amplifier amplifying the low amplitude input signal of audio signals used in audio players to over a certain amplitude to carry out variable adjustment according to amplitude of input signal and gain of a power amplifier so as to input the optimum power supply to the power amplifier.
Description
(1) technical field
The invention relates to the supply power control device of power amplifier, referring in particular to about the input signal amplification with short arcs such as audio signals is more than certain amplitude and the supply power control device of a kind of power amplifier of output.
(2) background technology
All include in the general audio player, power amplifier as shown in Figure 1 (Power AMP), Fig. 1 is the oscillogram of the audio signal exported by amplification through general power amplifier.The supply power that above-mentioned power amplifier utilization receives from power suppling part (not shown) (+Vcc ,-Vcc), be audio signal and output more than certain amplitude with the input audio signal amplification of short arc.
Like this, the audio player that includes above-mentioned power amplifier just can play signal handles in order to be fit to the audio signal amplification of the short arc that reads from recording medium, the above audio signal of certain amplitude, perhaps the audio signal amplification of the short arc that will receive from the outside is to be fit to tracer signal handle, the above audio signal of certain amplitude.
But, be input to the power amplifier that comprises in the general audio player supply power voltage amplitude as shown in Figure 2, fix, the supply power of irrelevant predefined certain voltage amplitude with importing audio amplitude (+Vcc ,-Vcc), so there is the problem (oblique line among Fig. 2 is partly represented power loss) of having wasted more relatively unnecessary consumption electric weight in the amplitude of the audio signal of the actual amplification output of the above-mentioned power amplifier of the process that compares.
(3) summary of the invention
The present invention proposes in order to address the above problem.The object of the present invention is to provide a kind of in order the input signal amplification of short arcs such as audio signal to be arrived more than certain amplitude and output, with the gain of the voltage amplitude of the supply power of input power amplifier, carry out the supply power control device of the power amplifier of appropriate variable input according to the amplitude and the power amplifier of input signal.
To achieve these goals, the supply power control device of power amplifier of the present invention is characterized in that comprising: amplitude device, with the amplitude amplification of input signal to more than certain amplitude and output; Power supplier is carried supply power to above-mentioned amplitude device; Control device is controlled the voltage amplitude of above-mentioned supply power according to the gain variations of the amplitude of above-mentioned input signal and above-mentioned amplitude device.
Effect of the present invention:
The supply power control device of the power amplifier of the present invention that has said structure and as above operate has very high practical value.To be used for input signal amplification with short arcs such as audio signals be more than certain amplitude and the voltage amplitude of the supply power that the power amplifier of output is imported, carry out appropriate variable adjustment according to the amplitude of input signal and the gain of power amplifier, thereby can import best supply power to power amplifier, also just can prevent unnecessary power wastage in advance.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the oscillogram of the audio signal exported by amplification through general power amplifier;
Fig. 2 is the voltage amplitude figure that is input to the supply power of general power amplifier;
Fig. 3 is the structure chart of the supply power control device embodiment of power amplifier of the present invention;
Fig. 4 for the supply power control device by power amplifier of the present invention by the voltage amplitude figure of the supply power of variable input.
The symbol description of major part in the accompanying drawing
10... power loudspeaker 11...A/D transducer
12... audio amplitude detector 13... voltage amplitude transducer
14... power suppling part
(5) embodiment
The supply power control device of a kind of power amplifier of the present invention comprises: amplitude device, with the amplitude amplification of input signal to more than certain amplitude and output; Power supplier is carried supply power to described amplitude device; Control device is controlled the voltage amplitude of described supply power according to the gain variations of the amplitude of described input signal and described amplitude device.
Below with reference to accompanying drawings, the embodiment to the supply power control device of power amplifier of the present invention is elaborated.
Fig. 3 is the structure chart of the supply power control device embodiment of power amplifier of the present invention.Such as the supply power control device of the power amplifier that is provided with in the audio player comprises: as the power amplifier 10 of above-mentioned amplitude device; As the A/D converter 11 of above-mentioned control device, audio amplitude detector 12, voltage amplitude transducer 13; Power suppling part 14 as above-mentioned power supplier.
In addition, above-mentioned power amplifier 10, as previously mentioned, audio signal (input) amplification of the short arc that will read from recording medium is the audio signal (output) of certain amplitude of being fit to play signal and handling, and perhaps audio signal (input) amplification of the short arc that will receive from the outside is the audio signal (output) more than certain amplitude of suitable tracer signal processing.
And, the required power Vcc of the above-mentioned power suppling part 14 above-mentioned power amplifiers of input, above-mentioned voltage amplitude transducer 13 can be multistage voltage amplitude Vcc with the variable conciliation of the supply power of above-mentioned power suppling part 14 according to the multistage voltage amplitude controlled variable signal of above-mentioned audio amplitude detector 12 outputs.
In addition, above-mentioned A/D converter 11 is converted to digital audio and video signals with the simulated audio signal A/D that above-mentioned power amplifier 10 receives.Above-mentioned audio amplitude detector 12 detects the amplitude of the digital audio and video signals that obtains after the above-mentioned A/D conversion, exports the control signal that is directly proportional with the amplitude of this audio signal then.At this moment, above-mentioned audio amplitude detector 12 is with reference to the gain of above-mentioned power amplifier 10, and output can be the control signal of multistage voltage amplitude with above-mentioned supply power Vcc variable adjustment.
Therefore, as shown in Figure 4, the service voltage Vcc of input is because be to carry out variable adjustment in the above-mentioned power amplifier 10, and for the multistage voltage amplitude that is directly proportional of audio signal amplitude of input, so can carry the supply power of the best that is directly proportional with the amplitude of the audio signal of being exported by amplification by above-mentioned power amplifier 10 reality.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the distortion of the above embodiment.
Claims (3)
1, a kind of supply power control device of power amplifier is characterized in that comprising:
Amplitude device, with the amplitude amplification of input signal to more than certain amplitude and output;
Power supplier is carried supply power to described amplitude device;
Control device is controlled the voltage amplitude of described supply power according to the gain variations of the amplitude of described input signal and described amplitude device.
2, the supply power control device of power amplifier as claimed in claim 1 is characterized in that described control device comprises:
A/D converter is converted into digital signal with described input signal;
The audio amplitude detector according to the gain of the amplitude and the described amplitude device of described digital signal, is exported multistage voltage amplitude controlled variable signal;
The voltage amplitude transducer utilizes the multistage voltage amplitude controlled variable signal of described amplitude detector, and the voltage amplitude of the supply power of described power supplier is become the multistage amplitude variable.
3, the supply power control device of power amplifier as claimed in claim 1, it is characterized in that described control device is the gain according to the amplitude and the described amplitude device of described input signal, the voltage amplitude of described supply power is carried out multistage variable control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111802 CN1607723A (en) | 2003-10-13 | 2003-10-13 | Power supply controlling apparatus of power amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111802 CN1607723A (en) | 2003-10-13 | 2003-10-13 | Power supply controlling apparatus of power amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1607723A true CN1607723A (en) | 2005-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310111802 Pending CN1607723A (en) | 2003-10-13 | 2003-10-13 | Power supply controlling apparatus of power amplifiers |
Country Status (1)
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| CN (1) | CN1607723A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960175B (en) * | 2005-11-03 | 2011-02-02 | 三星电子株式会社 | Method and apparatus to control output power of a power amplifier and audio player having the same |
| US9214909B2 (en) | 2005-07-29 | 2015-12-15 | Mks Instruments, Inc. | High reliability RF generator architecture |
| WO2017168250A1 (en) * | 2016-03-31 | 2017-10-05 | Tymphany Hk Limited | Booster circuit including dynamically sliding power supply unit |
| CN108736055A (en) * | 2018-05-18 | 2018-11-02 | 湖南铃本环保科技有限公司 | The high power electric vehicle battery pack of 30 seconds convenient changings and matched battery case |
| WO2021017850A1 (en) * | 2019-07-26 | 2021-02-04 | Goertek Inc. | Loudspeaker system and electronics device |
-
2003
- 2003-10-13 CN CN 200310111802 patent/CN1607723A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9214909B2 (en) | 2005-07-29 | 2015-12-15 | Mks Instruments, Inc. | High reliability RF generator architecture |
| CN1960175B (en) * | 2005-11-03 | 2011-02-02 | 三星电子株式会社 | Method and apparatus to control output power of a power amplifier and audio player having the same |
| WO2017168250A1 (en) * | 2016-03-31 | 2017-10-05 | Tymphany Hk Limited | Booster circuit including dynamically sliding power supply unit |
| US10601373B2 (en) | 2016-03-31 | 2020-03-24 | Tymphany Hk Limited | Booster circuit including dynamically sliding power supply unit |
| CN108736055A (en) * | 2018-05-18 | 2018-11-02 | 湖南铃本环保科技有限公司 | The high power electric vehicle battery pack of 30 seconds convenient changings and matched battery case |
| WO2021017850A1 (en) * | 2019-07-26 | 2021-02-04 | Goertek Inc. | Loudspeaker system and electronics device |
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