CN102868307A - Device capable of obtaining power supply from audio interface - Google Patents
Device capable of obtaining power supply from audio interface Download PDFInfo
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- CN102868307A CN102868307A CN2012103727926A CN201210372792A CN102868307A CN 102868307 A CN102868307 A CN 102868307A CN 2012103727926 A CN2012103727926 A CN 2012103727926A CN 201210372792 A CN201210372792 A CN 201210372792A CN 102868307 A CN102868307 A CN 102868307A
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Abstract
The invention relates to a device capable of obtaining power supply from an audio interface. The device is characterized in that the device comprises a capacitance voltage doubling circuit, a rectification filter circuit and a voltage stabilizing circuit, an audio signal which is output from the audio interface by the capacitance voltage doubling circuit is transformed to voltage doubling, the voltage doubling is subjected to rectification and voltage stabilization by sequentially passing through the rectification filter circuit and the voltage stabilizing circuit, and then the voltage doubling is output. The device has the advantages that the device is capable of obtaining the power supply from the audio signal which is output from audio interfaces of intelligent devices such as a mobile phone, under the condition that various audio signal amplitudes are input, the normal operation can be guaranteed, the efficiency is high, and the power supply obtainment is stable.
Description
Technical field
The present invention relates to the interfacing of mobile phone or other smart machines, especially relate to and a kind ofly obtain the device of power supply from audio port, be applied to smart machine link to each other small-sized or miniature not high to power requirement, the inconvenient equipment of external power supply.
Background technology
Along with the miniaturization of electronic product, the flying power of battery has become the important symbol that improves product competitiveness.Yet for the miniature or small-sized peripheral hardware of many connection mobile phones or other smart machines, the external power supply power taking is very inconvenient.At present in order to address this problem the battery powered mode of most employing, however powered battery can't work long hours, must constantly charge and satisfy the electricity consumption of equipment demand.In order to prolong the operating time of battery, the part existing product has adopted by earpiece audio mouth output signal is boosted through transformer, and then the technical scheme of carrying out rectification output is obtained power supply.Please refer to Fig. 1, Fig. 1 has the circuit diagram that obtains power supply by the earpiece audio delivery outlet now, and among the figure, J1 receives the earpiece audio delivery outlet, and its output signal is exported by filtering by Q1, Q2, Q3, Q4 rectification after boosting through transformer T1.Its circuit adopts miniature transformer in this audio port power supply technique, and the higher and circuit of device cost is had relatively high expectations to the input signal amplitude, and is compatible bad.
Summary of the invention
The purpose of this invention is to provide a kind of device that obtains power supply from audio port, it can be from obtaining power supply from the audio signal of the smart machine audio ports such as mobile phone output, and can be in the situation of various different audio signals amplitudes input, the high efficiency that can both work, stablize the device of power taking.
The present invention adopts following scheme to realize: a kind ofly obtain the device of power supply from audio port, it is characterized in that: comprise capacitance voltage multiplier circuit, current rectifying and wave filtering circuit and voltage stabilizing circuit; The audio signal that described capacitance voltage multiplier circuit is exported described audio port converts multiplication of voltage to and exports behind described current rectifying and wave filtering circuit and voltage stabilizing circuit rectifying and voltage-stabilizing successively.
In an embodiment of the present invention, described capacitance voltage multiplier circuit comprises first input end and the second input, and this first and second input is in order to be connected with described audio port, and described audio port is from first and second end input input inversion waveform.
In an embodiment of the present invention, described capacitance voltage multiplier circuit is comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described first input end; The negative pole of this diode D6 is as the output of this capacitance voltage multiplier circuit; The end of described capacitor C 1-C3 is connected with described first input end; The other end of this capacitor C 1 is connected with the negative pole of described diode D2, and the other end of this capacitor C 2 is connected with the negative pole of described diode D4, and the other end of this capacitor C 3 is connected with the output of described capacitance voltage multiplier circuit; The end of described capacitor C 4-C6 is connected with described the second input; The other end of this capacitor C 4 is connected with the negative pole of described diode D1, and the other end of this capacitor C 5 is connected with the negative pole of described diode D3; The other end of this capacitor C 6 is connected with the negative pole of described diode D5.
In an embodiment of the present invention, described capacitance voltage multiplier circuit is comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described the second input; The negative pole of this diode D6 is as the output of this capacitance voltage multiplier circuit; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is connected with described first input end, and the other end of this capacitor C 1 is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the negative pole of described diode D3, and the other end is connected with the negative pole of described diode D5; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of described capacitor C 6 is connected with the negative pole of described diode D4, and the other end is connected with the negative pole of described diode D6.
In an embodiment of the present invention, described first input end is connected with the L channel of described audio port, and described the second input is connected with the R channel of described audio port.
In an embodiment of the present invention, described first input end is connected with the R channel of described audio port, and described the second input is connected with the L channel of described audio port.
In an embodiment of the present invention, described capacitance voltage multiplier circuit is comprised of capacitor C 1-C9 and diode D1-D13, described diode D1-D7 connects successively, and the positive pole of this diode D1 is as earth terminal, and the negative pole of this diode D7 is as the output of these six grades of capacitance voltage multiplier circuits; Described diode D8-D13 connects successively, and the positive pole of this diode D8 is connected with the positive pole of diode D1, and the negative pole of this diode D13 is connected with the positive pole of described diode D7; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is as described first input end, and the other end is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the positive pole of described diode D4, and the other end is connected with the positive pole of described diode D6; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of this capacitor C 6 is connected with the positive pole of described diode D5, and the other end is connected with the positive pole of described diode D7; Described capacitor C 7-C9 connects successively, and an end of this capacitor C 7 is as described the second input, and the other end is connected with the negative pole of described diode D8; One end of this capacitor C 9 is connected with the positive pole of described diode D11, and the other end is connected with the positive pole of described diode D13.
In an embodiment of the present invention, described diode is Schottky diode.
In an embodiment of the present invention, described voltage stabilizing circuit comprises: a diode D14, and the positive pole of this diode D14 is as the input of this voltage stabilizing circuit; One capacitor C 10, an end of this capacitor C 10 is connected other end ground connection with the negative pole of described diode D14; One capacitor C 11, an end of this capacitor C 11 is connected other end ground connection with the negative pole of described diode D14; And a three-terminal regulator block, the input of this three-terminal regulator block is connected with the negative pole of described diode D14, and output is as the output of this voltage stabilizing circuit, earth terminal ground connection.
In an embodiment of the present invention, described audio port is the audio port of mobile phone.
Circuit structure of the present invention is simple, can obtain power supply from the equipment with audio port, has changed to adopt miniature transformer to realize transformation in the past, and design cost is low, and circuit is lower, compatible good to the amplitude range requirement of input voltage.
Description of drawings
Fig. 1 is the existing circuit diagram that obtains power supply by the earpiece audio delivery outlet.
Fig. 2 is the schematic block circuit diagram of the embodiment of the invention.
Fig. 3 is the capacitance voltage multiplier circuit connection diagram of the embodiment of the invention one.
Fig. 4 is the capacitance voltage multiplier circuit connection diagram of the embodiment of the invention two.
Fig. 5 is the capacitance voltage multiplier circuit connection diagram of the embodiment of the invention three.
Fig. 6 is rectifying and wave-filtering of the present invention and voltage stabilizing circuit connection diagram.
Embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in detail as after.
As shown in Figure 2, present embodiment provides a kind of and obtains the device of power supply from audio port, and this device comprises capacitance voltage multiplier circuit 3, current rectifying and wave filtering circuit 4 and voltage stabilizing circuit 5; The audio signal that described capacitance voltage multiplier circuit 3 is exported described audio port converts multiplication of voltage to and exports behind described current rectifying and wave filtering circuit 4 and voltage stabilizing circuit 5 rectifying and voltage-stabilizings successively.Be noted that, this audio port can be mobile phone or other intelligent movable equipment, but be not limited to this, those equipment produce the audio frequency square wave of 180 ° of two groups of phase differences by software control, export from the left and right acoustic channels of audio interface respectively, convert high voltage to through capacitance voltage multiplier circuit, again by external output dc voltage after current rectifying and wave filtering circuit shaping, the voltage stabilizing circuit voltage stabilizing.
The concrete Fig. 3 that please refer to, Fig. 3 is the capacitance voltage multiplier circuit connection diagram of the embodiment of the invention one, and among the figure, this capacitance voltage multiplier circuit is six grades of capacitance voltage multiplier circuits, and these six grades of capacitance voltage multiplier circuits are comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described the second input 2; The negative pole of this diode D6 is as the output 7 of this capacitance voltage multiplier circuit; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is connected with described the first input 1 end, and the other end of this capacitor C 1 is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the negative pole of described diode D3, and the other end is connected with the negative pole of described diode D5; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of described capacitor C 6 is connected with the negative pole of described diode D4, and the other end is connected with the negative pole of described diode D6.When input audio signal is left positive right bearing.Circuit is to capacitor C 4, C5, C6 charging energy-storing, when input signal is right negative left timing, upward circuit charging of capacitor C 4, C5, C6.Rightmost electric capacity finally is charged to and approximates 6 times to the voltage of input audio frequency square wave amplitude.
See also Fig. 4, the capacitance voltage multiplier circuit connection diagram of Fig. 4 embodiment of the invention two.Capacitance voltage multiplier circuit described in the figure is comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described first input end; The negative pole of this diode D6 is as the output of this capacitance voltage multiplier circuit; The end of described capacitor C 1-C3 is connected with described first input end; The other end of this capacitor C 1 is connected with the negative pole of described diode D2, and the other end of this capacitor C 2 is connected with the negative pole of described diode D4, and the other end of this capacitor C 3 is connected with the output of described capacitance voltage multiplier circuit; The end of described capacitor C 4-C6 is connected with described the second input; The other end of this capacitor C 4 is connected with the negative pole of described diode D1, and the other end of this capacitor C 5 is connected with the negative pole of described diode D3; The other end of this capacitor C 6 is connected with the negative pole of described diode D5.Be noted that above two embodiment, described first input end is connected with the L channel of described audio port, described the second input is connected with the R channel of described audio port, this connection also can be conversely, be that first input end is connected with the R channel of described audio port, described the second input is connected with the L channel of described audio port, and described audio port is from first and second end input inversion waveform.Please continue with reference to Fig. 4, when input audio signal is left positive right bearing.Circuit is to capacitor C 4, C5, C6 charging energy-storing, when input signal is right negative left timing, capacitor C 1, C2, C3 circuit charging downwards.Rightmost electric capacity finally is charged to and approximates 6 times to the voltage of input audio frequency square wave amplitude.
Please refer to Fig. 5, the capacitance voltage multiplier circuit connection diagram of another embodiment of the present invention, described capacitance voltage multiplier circuit is comprised of capacitor C 1-C9 and diode D1-D13, described diode D1-D7 connects successively, the positive pole of this diode D1 is as earth terminal 8, and the negative pole of this diode D7 is as the output 7 of this capacitance voltage multiplier circuit; Described diode D8-D13 connects successively, and the positive pole of this diode D8 is connected with the positive pole of diode D1, and the negative pole of this diode D13 is connected with the positive pole of described diode D7; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is as described first input end 1, and the other end is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the positive pole of described diode D4, and the other end is connected with the positive pole of described diode D6; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of this capacitor C 6 is connected with the positive pole of described diode D5, and the other end is connected with the positive pole of described diode D7; Described capacitor C 7-C9 connects successively, and an end of this capacitor C 7 is as described the second input 2, and the other end is connected with the negative pole of described diode D8; One end of this capacitor C 9 is connected with the positive pole of described diode D11, and the other end is connected with the positive pole of described diode D13.These six grades of capacitance voltage multiplier circuits are when work, and the audio signal of input is in turn to each group capacitor charging.Rightmost electric capacity finally is charged to and approximates 6 times to the voltage of input audio frequency square wave amplitude.
In order to reduce the power consumption of six grades of capacitance voltage multiplier circuits, the diode that adopts in the above-mentioned six grades of capacitance voltage multiplier circuits of the present invention can adopt the lower Schottky diode of forward conduction voltage drop.
In addition, it is worth mentioning that capacitance voltage multiplier circuit of the present invention can adopt six grades of multiplication of voltages, seven grades of multiplication of voltages or eight grades of multiplication of voltages etc., but is not limited thereto, it can arrange according to actual needs.
See also Fig. 6, Fig. 6 is rectifying and wave-filtering and voltage stabilizing circuit connection diagram, and the voltage stabilizing circuit described in the figure comprises: a diode D14, and the positive pole of this diode D14 is as the input 9 of this voltage stabilizing circuit; One capacitor C 10, an end of this capacitor C 10 is connected other end ground connection with the negative pole of described diode D14; One capacitor C 11, an end of this capacitor C 11 is connected other end ground connection with the negative pole of described diode D14; And a three-terminal regulator block U1, the input of this three-terminal regulator block is connected with the negative pole of described diode D14, and output is as the output 6 of this voltage stabilizing circuit, earth terminal ground connection.
It should be noted that also that at last audio port of the present invention can be the audio port of mobile phone or other intelligent movable equipment, but not as limit.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. one kind is obtained the device of power supply from audio port, it is characterized in that: comprise capacitance voltage multiplier circuit, current rectifying and wave filtering circuit and voltage stabilizing circuit; The audio signal that described capacitance voltage multiplier circuit is exported described audio port converts multiplication of voltage to and exports behind described current rectifying and wave filtering circuit and voltage stabilizing circuit rectifying and voltage-stabilizing successively.
2. the device that obtains power supply from audio port according to claim 1, it is characterized in that: described capacitance voltage multiplier circuit comprises first input end and the second input, this first and second input is in order to be connected with described audio port, and described audio port is from first and second input input inversion waveform.
3. according to claim 2ly obtain the device of power supply from audio port, it is characterized in that: described capacitance voltage multiplier circuit is comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described first input end; The negative pole of this diode D6 is as the output of this capacitance voltage multiplier circuit; The end of described capacitor C 1-C3 is connected with described first input end; The other end of this capacitor C 1 is connected with the negative pole of described diode D2, and the other end of this capacitor C 2 is connected with the negative pole of described diode D4, and the other end of this capacitor C 3 is connected with the output of described capacitance voltage multiplier circuit; The end of described capacitor C 4-C6 is connected with described the second input; The other end of this capacitor C 4 is connected with the negative pole of described diode D1, and the other end of this capacitor C 5 is connected with the negative pole of described diode D3; The other end of this capacitor C 6 is connected with the negative pole of described diode D5.
4. according to claim 3ly obtain the device of power supply from audio port, it is characterized in that: described capacitance voltage multiplier circuit is comprised of capacitor C 1-C6 and diode D1-D6; Described diode D1-D6 connects successively, and the positive pole of this diode D1 is as described the second input; The negative pole of this diode D6 is as the output of this capacitance voltage multiplier circuit; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is connected with described first input end, and the other end of this capacitor C 1 is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the negative pole of described diode D3, and the other end is connected with the negative pole of described diode D5; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of described capacitor C 6 is connected with the negative pole of described diode D4, and the other end is connected with the negative pole of described diode D6.
5. according to claim 2ly obtain the device of power supply from audio port, it is characterized in that: described first input end is connected with the L channel of described audio port, and described the second input is connected with the R channel of described audio port.
6. according to claim 2ly obtain the device of power supply from audio port, it is characterized in that: described first input end is connected with the R channel of described audio port, and described the second input is connected with the L channel of described audio port.
7. the device that obtains power supply from audio port according to claim 3, it is characterized in that: described capacitance voltage multiplier circuit is comprised of capacitor C 1-C9 and diode D1-D13, described diode D1-D7 connects successively, the positive pole of this diode D1 is as earth terminal, and the negative pole of this diode D7 is as the output of this capacitance voltage multiplier circuit; Described diode D8-D13 connects successively, and the positive pole of this diode D8 is connected with the positive pole of diode D1, and the negative pole of this diode D13 is connected with the positive pole of described diode D7; Described capacitor C 1-C3 connects successively, and an end of this capacitor C 1 is as described first input end, and the other end is connected with the negative pole of described diode D1; One end of this capacitor C 3 is connected with the positive pole of described diode D4, and the other end is connected with the positive pole of described diode D6; Described capacitor C 4-C6 connects successively, and an end of this capacitor C 4 is connected with the positive pole of described diode D1, and the other end is connected with the negative pole of described diode D2; One end of this capacitor C 6 is connected with the positive pole of described diode D5, and the other end is connected with the positive pole of described diode D7; Described capacitor C 7-C9 connects successively, and an end of this capacitor C 7 is as described the second input, and the other end is connected with the negative pole of described diode D8; One end of this capacitor C 9 is connected with the positive pole of described diode D11, and the other end is connected with the positive pole of described diode D13.
8. according to claim 4 or 7 describedly obtain the device of power supply from audio port, it is characterized in that: described diode is Schottky diode.
9. according to claim 1ly obtain the device of power supply from audio port, it is characterized in that: described voltage stabilizing circuit comprises:
One diode D14, the positive pole of this diode D14 is as the input of this voltage stabilizing circuit;
One capacitor C 10, an end of this capacitor C 10 is connected other end ground connection with the negative pole of described diode D14;
One capacitor C 11, an end of this capacitor C 11 is connected other end ground connection with the negative pole of described diode D14; And
One three-terminal regulator block, the input of this three-terminal regulator block is connected with the negative pole of described diode D14, and output is as the output of this voltage stabilizing circuit, earth terminal ground connection.
10. according to claim 1ly obtain the device of power supply from audio port, it is characterized in that: described audio port is the audio port of mobile phone.
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| CN2012103727926A CN102868307A (en) | 2012-09-29 | 2012-09-29 | Device capable of obtaining power supply from audio interface |
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| CN2012103727926A CN102868307A (en) | 2012-09-29 | 2012-09-29 | Device capable of obtaining power supply from audio interface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103198578A (en) * | 2013-02-28 | 2013-07-10 | 福建联迪商用设备有限公司 | Method for taking electricity from audio interface of audio equipment and circuit |
| WO2014139337A1 (en) * | 2013-03-12 | 2014-09-18 | Lin Zhufa | Personal medical product design method based on audio port |
| CN104063652A (en) * | 2014-07-05 | 2014-09-24 | 吴东辉 | Device and method for capacitive and inductive anti-separation electricity taking of audio signals |
| CN104287700A (en) * | 2014-09-29 | 2015-01-21 | 北京工业大学 | Pulse wave detection system and method using audio port of smart phone |
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Application publication date: 20130109 |