CN101442265A - Power supply for portable electronic apparatus - Google Patents
Power supply for portable electronic apparatus Download PDFInfo
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- CN101442265A CN101442265A CNA2007102026449A CN200710202644A CN101442265A CN 101442265 A CN101442265 A CN 101442265A CN A2007102026449 A CNA2007102026449 A CN A2007102026449A CN 200710202644 A CN200710202644 A CN 200710202644A CN 101442265 A CN101442265 A CN 101442265A
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- transformation module
- direct voltage
- transformer
- supply installation
- voltage
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Abstract
The invention discloses a power supply device for portable electronic equipment, which comprises a first voltage transformation module and a second voltage transformation module, wherein the first voltage transformation module is used for being connected with commercial power and converting the commercial power into a first direct current voltage; and the second voltage transformation module is used for being connected with the first voltage transformation module and converting the first direct current voltage into a second direct current voltage. The power supply device for the portable electronic equipment utilizes the two voltage transformation modules to provide the two different direct current voltages respectively, thereby charging the portable electronic equipment which needs to be charged by two different working voltages.
Description
Technical field
The present invention relates to a kind of electric supply installation, particularly a kind of electric supply installation that is used for portable electric appts.
Background technology
Various portable electric appts as mobile phone, notebook computer, media player etc., use battery to power.These portable electric appts also are furnished with power supply adaptor, are used for powering to system when the battery short of electricity, can also be battery charge simultaneously.Traditional power supply adaptor as shown in Figure 1, this power supply adaptor 10 comprises first connector 12, transformer 14 that links to each other with civil power and second connector 16 that links to each other with portable electric appts.By transformer 14, the 220V of civil power or 110V alternating current are converted into the direct current of 8 ~ 15V, thereby supply with portable electric appts.
(some portable electric appts use USB interface are powered for Universal Serial Bus, USB) popularizing of interface, battery charge along with USB.Utilize a USB transmission line that the USB interface of this portable electric appts is linked to each other with the USB interface of computer, the power line of 3 ~ 5V in the USB interface of computer is connected on the portable electric appts, thereby utilizes the power supply on the computer to power by the power line in the USB interface.
Yet, using can not be compatible between power supply adaptor and the portable electric appts that uses the USB transmission line: use the equipment charge that the portable electric appts of power supply adaptor can not the apparatus USB interface, and the portable electric appts that uses USB interface to charge can not charge with power supply adaptor.
Summary of the invention
In view of this, be necessary to provide a kind of can compatible power supply adaptor and the electric supply installation of the portable electric appts of two kinds of supply power modes of USB interface.
A kind of electric supply installation of portable electric appts comprises one first transformation module and one second transformation module, and the described first transformation module is used for linking to each other with civil power, and civil power is converted to one first direct voltage; The described second transformation module is used for linking to each other with the described first transformation module, and described first direct voltage is converted to one second direct voltage.
The electric supply installation of above-mentioned portable electric appts utilizes two transformation modules that two kinds of different direct voltages are provided respectively, thereby can be the charging portable electronic apparatus of two kinds of different operating voltage chargings of needs.
Description of drawings
Fig. 1 is the structural representation of a kind of power supply adaptor of portable electric appts in the prior art.
Fig. 2 is the structural representation of first better embodiment of the electric supply installation of portable electric appts of the present invention.
Fig. 3 is for having used the circuit diagram of the second transformation module of W7805 type three terminal regulator in this first better embodiment.
Fig. 4 is the circuit diagram of the second transformation module of second better embodiment of the electric supply installation of portable electric appts of the present invention.
Embodiment
As shown in Figure 2, the electric supply installation 20 of portable electric appts of the present invention comprises the first transformation module 22 and the second transformation module 24.
The first transformation module 22 comprises first input connector 222, first transformer 224, first out connector 226 and second out connector 228.
First input connector 222 is used for linking to each other with civil power, and civil power is inserted first transformer 224.First transformer 224 is used for the electric main transformation of 220V or 110V is become first direct voltage of 8 ~ 19V.First out connector 226, second out connector 228 are respectively applied for first direct voltage output that first transformer 224 is produced.Wherein, first out connector 226 is used for above-mentioned direct voltage is outputed to the portable electric appts that operating voltage is 8 ~ 19V, comes to be this portable electric appts power supply; Second out connector 228 is used for first direct voltage of above-mentioned 8 ~ 19V is outputed to the second transformation module 24.
The second transformation module 24 comprises second input connector, 242, the second transformers 244 and the 3rd out connector 246.
The 3rd out connector 246 is used for above-mentioned second direct voltage is outputed to the portable electric appts that uses USB interface, thereby for its charging or operating voltage is provided.The 3rd out connector 246 can be public affairs or the female connectors in the USB interface, for example be A type (being used for common PC), Type B (being used for portable electric appts) or Mini type (being used for digital camera etc.) in the USB specification as MP3 player, portable hard drive etc.
As shown in Figure 3, second transformer 244 of the second transformation module 24 comprises switch 302, voltage regulation unit 304, diode 306, first electric capacity 308 and second electric capacity 310.
First electric capacity 308, second electric capacity 310 all have an end ground connection, and its other end is connected to input, the output two ends of voltage regulation unit 304.First, second electric capacity 308,310 can be eliminated the input of voltage regulation unit 304, the ripple in the output voltage.
The positive pole of diode 306 is connected in the output of voltage regulation unit 304, and negative pole is connected in the input of voltage regulation unit 304.Because the output of voltage regulation unit 304 is connected with second electric capacity 310, when outage, second electric capacity 310 can produce bigger negative pressure, and the voltage regulation unit 304 that might cause being attached thereto damages.The diode 306 that is in parallel with voltage regulation unit 304 can be avoided the danger to voltage regulation unit 304 damage that brings of the negative pressure that produced because of second electric capacity 310.
As shown in Figure 4, in second better embodiment of the present invention, the output of this voltage regulation unit 304 is first resistance R 1, second resistance R, the 2 back ground connection by connecting successively also.The controlled of voltage regulation unit 304 terminates between first, second resistance R 1, the R2.By selecting first, second resistance R 1, R2 for use with different resistances, can be so that the corresponding burning voltage of these voltage regulation unit 304 outputs.
In the electric supply installation of this portable electric appts, the first transformation module 22 can be integrated in the housing with the second transformation module 24, thereby can draw two outputs by a housing and export first direct voltage and second direct voltage respectively, help the intensification of system.In this case, first transformer 224 in the first transformation module 22 can be directly links to each other with second transformer 244 in the second transformation module 24, and need not be through second out connector 228, second input connector 242.
In other embodiments, the electric supply installation of this portable electric appts also can be with the second transformation module 24 and the 22 discrete settings of the first transformation module, the first transformation module 22 and the second transformation module 24 are arranged at respectively in two housings, and use connecting line to link to each other, the second transformation module 24 can look practical situations and the first transformation module 22 is pegged graft.
The electric supply installation of above-mentioned portable electric appts utilizes two transformation modules that two kinds of different direct voltages are provided respectively, thereby both can satisfy the demand that general operating voltage is the portable electric appts of 8 ~ 19V, also can satisfy the demand of utilizing USB interface that the portable electric appts of 3 ~ 5V operating voltage is provided.
Claims (12)
- The electric supply installation of [claim 1] a kind of portable electric appts comprises one first transformation module and one second transformation module, and the described first transformation module is used for linking to each other with civil power, and civil power is converted to one first direct voltage; The described second transformation module is used for linking to each other with the described first transformation module, and described first direct voltage is converted to one second direct voltage.
- The electric supply installation of [claim 2] portable electric appts as claimed in claim 1 is characterized in that: described first direct voltage is 8 ~ 19V.
- The electric supply installation of [claim 3] portable electric appts as claimed in claim 1 is characterized in that: described second direct voltage is 3 ~ 5V.
- The electric supply installation of [claim 4] portable electric appts as claimed in claim 1 is characterized in that: the described first transformation module comprises one first input connector, one first transformer, one first out connector; Described first input connector is used for linking to each other with civil power, described civil power is offered described first transformer; It is described first direct voltage that described first transformer is used for the civil power transformation that described first input connector is introduced, and described first out connector is used for described first direct voltage output.
- The electric supply installation of [claim 5] portable electric appts as claimed in claim 4, it is characterized in that: the described first transformation module also comprises one second out connector, and the described second transformation module comprises one second input connector, one second transformer, one the 3rd out connector; Described second out connector links to each other with described second input connector, is used for described first direct voltage is offered the described second transformation module; It is described second direct voltage that described second transformer is used for the described first direct voltage transformation; Described the 3rd out connector is used for described second direct voltage output.
- The electric supply installation of [claim 6] portable electric appts as claimed in claim 4, it is characterized in that: the described second transformation module comprises one second transformer, one the 3rd out connector, it is described second direct voltage that described second transformer is used for the described first direct voltage transformation, and described the 3rd out connector is used for second direct voltage is exported.
- The electric supply installation of [claim 7] portable electric appts as claimed in claim 6, it is characterized in that: described second transformer comprises a voltage regulation unit, described voltage regulation unit is connected between described first transformation module and described the 3rd out connector, is used for exporting described second direct voltage according to described first direct voltage.
- The electric supply installation of [claim 8] portable electric appts as claimed in claim 7 is characterized in that: described voltage regulation unit is a W7805 type three terminal regulator.
- The electric supply installation of [claim 9] portable electric appts as claimed in claim 8 is characterized in that: the controlled end ground connection of described voltage regulation unit.
- The electric supply installation of [claim 10] portable electric appts as claimed in claim 8, it is characterized in that: described second transformer also comprises one first resistance, one second resistance, described first, second resistance is connected in series between the output and ground of described voltage regulation unit, and the controlled end of described voltage regulation unit is connected between described first, second resistance.
- [claim 11] is as the electric supply installation of claim 7 or 10 described portable electric appts, it is characterized in that: described second transformer also comprises one first electric capacity, one second electric capacity and diode, one end ground connection of described first, second electric capacity, the other end link to each other with input, the output of described voltage regulation unit respectively; The positive pole of described diode connects the output of described voltage regulation unit, the input that negative pole connects described voltage regulation unit.
- [claim 12] is characterized in that as the electric supply installation of claim 7 or 10 described portable electric appts: described second transformer also comprises a switch, and described switch is connected between the input of described first transformation module and described voltage regulation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102026449A CN101442265A (en) | 2007-11-23 | 2007-11-23 | Power supply for portable electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102026449A CN101442265A (en) | 2007-11-23 | 2007-11-23 | Power supply for portable electronic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101442265A true CN101442265A (en) | 2009-05-27 |
Family
ID=40726556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007102026449A Pending CN101442265A (en) | 2007-11-23 | 2007-11-23 | Power supply for portable electronic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101442265A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790359A (en) * | 2016-04-08 | 2016-07-20 | 刘俊 | Voltage stabilization shunting mobile phone charging device |
-
2007
- 2007-11-23 CN CNA2007102026449A patent/CN101442265A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790359A (en) * | 2016-04-08 | 2016-07-20 | 刘俊 | Voltage stabilization shunting mobile phone charging device |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090527 |