CN202679248U - Power supply adapter - Google Patents
Power supply adapter Download PDFInfo
- Publication number
- CN202679248U CN202679248U CN 201220315989 CN201220315989U CN202679248U CN 202679248 U CN202679248 U CN 202679248U CN 201220315989 CN201220315989 CN 201220315989 CN 201220315989 U CN201220315989 U CN 201220315989U CN 202679248 U CN202679248 U CN 202679248U
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- output interface
- power supply
- supply adaptor
- power
- source output
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Abstract
The utility model discloses a power supply adapter which includes a power supply switch circuit having an input terminal and an output terminal. The output terminal is connected with a first power supply output interface and is provided with a second power supply output interface. The second power supply output interface is connected in parallel with the output terminal of the power supply switch circuit via a voltage conversion circuit, and the output terminal of the power supply switch circuit is connected with the first power supply output interface. The adapter is provided with an external power supply output interface, and adopts a standard USB or 3.5mmDC output structure, so the using function of the adapter is expanded, the adapter can supply power to various electronic devices, and the problem that other power supply devices occupy much space is solved. The power supply adapter is easy to use in daily life, and improves the product quality.
Description
Technical field
The utility model relates to the switch power technology field, particularly relates to the power supply adaptor that a kind of display, notebook or TV use.
Background technology
Along with the develop rapidly of electronic equipment, each class of electronic devices has been enriched user's routine work learning life greatly, but the thing followed is the indispensable power demands of each class of electronic devices.Display is as the indispensable part of personal desktop computer, and its adapter is being played the part of always and only is the role of monitor power supply.Adapter, is constantly weeded out the old and bring forth the new except the hommization aspect along with the development of technology is maked rapid progress as supply module, also in function aspects the embodiment of advancing by leaps and bounds is arranged,
Figure 1 shows that the basic circuit structure schematic diagram of the power supply adaptor of prior art.As shown in Figure 1, the basic circuit structure of existing adapter comprises interchange input module 1, ac filter module 2, rectification module 3, transformer 4, pulse width modulating chip 5, feedback circuit module 6, rectifier filter circuit 7, alternating current inputs to power supply adaptor from input module, and carry out through rectification module AC rectification being filtered into direct current again after filtering is processed through the ac filter module, then with described direct current input transformer, described transformer carries out decompression transformation with the direct current of inputting and obtains a low-voltage direct-current pulsating voltage, then described low-voltage direct-current pulsating voltage is inputted described rectifier filter circuit 7, described rectifier filter circuit 7 with described low-voltage direct-current pulsating voltage rectifying and wave-filtering after output voltage direct current stably, simultaneously direct current is inputted described feedback circuit module 6 and carried out the voltage stabilizing adjustment, described feedback circuit 6 transfers to pulse width modulating chip 5 with the variation of output voltage, adjusts duty by pulse width modulating chip and realizes that recently the change of input is to realize the purpose of output voltage stabilization.
The power supply adaptor external structure of prior art comprises AC input terminal, accommodates plastic casing and the direct current output connecting line of above-mentioned basic circuit.When the user need to use the electric equipment of direct current input power supply, the adapter AC input terminal is exchanged input socket with civil power to be connected, direct current output connecting line is connected with electrical appliance, alternating current can be converted to corresponding direct current, drives the electrical appliance normal operation.
But, the configuration feature of power supply of the prior art only limits to be each power unit energy supply, its only competence exertion effect when the user need to use corresponding electrical appliance, for long-time idle adapter, can not satisfy people to the demand of electronic product multifunction, the adapter internal electronic component life-span is reduced.
Simultaneously traditional real device adapter, general user's use habit are that adapter is put in the one side of placing the display desk, and when display did not use, the AC input plug of adapter generally can not use the effort plug at every turn.So not only traditional display adapter has taken the space of user's desktop, and the power supply capacity of adapter is not fully exerted again.
The utility model content
The purpose of this utility model is for the technological deficiency that exists in the prior art, and a kind of power supply adaptor of multichannel output is provided.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of power supply adaptor, comprise the power switch circuit with input and output, described output is connected with the first power output interface, also be provided with the second source output interface, this second source output interface accesses the output of described power switch circuit in parallel by voltage conversion circuit and described the first power output interface.
Described voltage conversion circuit comprises that input is connected to the DC-DC transducer of voltage conversion circuit output, one end is connected the filter capacitor of other end ground connection with the input of DC-DC transducer, be connected on the filter inductance between DC-DC converter output end and the second source output interface, and be arranged in parallel sample circuit between filter inductance and second source output interface, described sampling circuit comprises the sampling resistor of ground connection after two series connection, and the feedback end of described DC-DC is connected between two sampling resistors.
Also comprise the electric capacity that is connected in parallel between filter inductance and the second source output interface.
Also be arranged in parallel LED light between described filter capacitor and the second source output interface, described LED light other end ground connection after protective resistance.
Be provided with the described second source output interface of control energy supply whether switch between the input of described DC-DC transducer and the voltage conversion circuit output.
Also be provided be used to the housing that encapsulates described power switch circuit, described the first power output interface and second source output interface all are inlaid in the outer surface of described housing.
Described second source output interface is USB output interface or 3.5mm DC output interface.
Compared with prior art, the beneficial effects of the utility model are:
Adapter of the present utility model, increased the external power supply output interface, can be by the demand direct output of DC current in order to satisfy various demands after change in voltage, preferably, adopt USB or the 3.5mmDC export structure of standard, can expand the use function of adapter, convenient is various electronic equipment energy supplies, the problems such as other each power supply devices take up space have too much been solved, uses of providing amenities for the people, raising product quality.
Description of drawings
Figure 1 shows that the basic circuit structure schematic diagram of the power supply adaptor of prior art;
Figure 2 shows that power supply adaptor structural representation of the present utility model;
The basic circuit structure figure of Fig. 3 power supply adaptor of the present utility model.
Among the figure: 1. exchange input module, 2. ac filter module, 3. rectification module, 4. transformer, 5. pulse width modulating chip; 6. feedback circuit module, 7. rectifier filter circuit, 8. voltage conversion circuit; 20.DC-DC controller, 21.USB output interface, 22. switches; 24.3.5mmDC output interface, 25, filter capacitor, 26,27. sampling resistors; 28.LED indicator light, 29. protective resistances, 30. housings; 31. filter capacitor, 32. filter capacitors, 40. first power output interfaces.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 2, it comprises the housing 30 that is built-in with power switch circuit and voltage conversion circuit power supply adaptor of the present utility model, be embedded at housing 30 1 ends in order to export the first power output interface 40 that is connected to the electrical equipment energy supply and with power switch circuit, be embedded at housing 30 outer surfaces for the second source output interface to the small electric apparatus energy supply, wherein, described second source output interface comprises USB output interface 21 and 3.5mmDC output interface 24, and described USB output interface 21 and 3.5mmDC output interface 24 are fixedly installed on the surface of described housing 30 and by the output of voltage conversion circuit 8 with power switch circuit and are in parallel.Described output interface all adopts built-in embedded design, guarantees that the housing flatness is not damaged.
As shown in Figure 3, power supply adaptor of the present utility model comprise power switch circuit and with the voltage conversion circuit 8 of power switch circuit output-parallel, described power switch circuit comprises interchange input module 11, ac filter module 12, rectification module 13, transformer 14, pulse width modulating chip 15, feedback circuit module 16 and secondary commutation filter circuit 17, wherein, alternating current inputs to power supply adaptor from input module, and carry out through rectification module AC rectification being filtered into direct current again after filtering is processed through the ac filter module, then with described direct current input transformer, described transformer carries out decompression transformation with the direct current of inputting and obtains a low-voltage direct-current pulsating voltage, then described low-voltage direct-current pulsating voltage is inputted described secondary commutation filter circuit, described secondary commutation filter circuit with described low-voltage direct-current pulsating voltage rectifying and wave-filtering after output voltage direct current stably, simultaneously direct current is inputted described feedback circuit module and carried out the voltage stabilizing adjustment, described feedback circuit transfers to pulse width modulating chip with the variation of output voltage, adjusts duty by pulse width modulating chip and realizes that recently the change of input is to realize the purpose of output voltage stabilization.
Described voltage conversion circuit 8 comprises that input is connected to the DC-DC transducer 20 of voltage conversion circuit output behind switch 22, one end is connected the filter capacitor 31 of other end ground connection with the input of DC-DC transducer, be connected on the filter inductance 25 between DC-DC converter output end and the second source output interface, be connected in parallel on the electric capacity 32 between filter inductance 25 and the second source output interface, and be arranged in parallel sample circuit between filter inductance 25 and second source output interface, described sampling circuit comprises the sampling resistor 26 of ground connection after two series connection, 27, the feedback end of described DC-DC is connected between two sampling resistors.
For indicating described each export structure energy supply state, also be arranged in parallel LED light 28 between described filter capacitor and the second source output interface, described LED light other end ground connection after protective resistance 29.When the Voltage-output after the conversion is arranged LED light 28 be lit prompting its at the energy supply state, after control switch 22 cuts off being connected that voltage conversion circuits and power switch circuit export, LED light namely is in the state that goes out, and current second source output interface does not have energy supply output.
It is to be noted, can adopt many output transformers in the power switch circuit of the present utility model, behind many output transformers, directly export 5V voltage, its after shaping filter is processed directly energy supply to each output interface, this can realize the effect of the utility model equally, each output interface and switch arrange similar to the above, no longer launch to describe at this.
The above only is preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. power supply adaptor, comprise the power switch circuit with input and output, described output is connected with the first power output interface, it is characterized in that, also be provided with the second source output interface, this second source output interface accesses the output of described power switch circuit in parallel by voltage conversion circuit and described the first power output interface.
2. power supply adaptor as claimed in claim 1, it is characterized in that, described voltage conversion circuit comprises that input is connected to the DC-DC transducer of voltage conversion circuit output, one end is connected the filter capacitor (31) of other end ground connection with the input of DC-DC transducer, be connected on the filter inductance (25) between DC-DC converter output end and the second source output interface, and be arranged in parallel sample circuit between filter inductance (25) and second source output interface, described sampling circuit comprises the sampling resistor of ground connection after two series connection, and the feedback end of described DC-DC is connected between two sampling resistors.
3. power supply adaptor as claimed in claim 2 is characterized in that, also comprises the electric capacity (32) that is connected in parallel between filter inductance (25) and the second source output interface.
4. power supply adaptor as claimed in claim 2 is characterized in that, also has been arranged in parallel LED light between described filter capacitor and the second source output interface, described LED light other end ground connection after protective resistance.
5. power supply adaptor as claimed in claim 2 is characterized in that, is provided with the described second source output interface of control energy supply whether switch between the input of described DC-DC transducer and the voltage conversion circuit output.
6. such as each described power supply adaptor of claim 1-5, it is characterized in that, also be provided be used to the housing that encapsulates described power switch circuit, described the first power output interface and second source output interface all are inlaid in the outer surface of described housing.
7. power supply adaptor as claimed in claim 6 is characterized in that, described second source output interface is USB output interface or 3.5mm DC output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315989 CN202679248U (en) | 2012-07-02 | 2012-07-02 | Power supply adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315989 CN202679248U (en) | 2012-07-02 | 2012-07-02 | Power supply adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679248U true CN202679248U (en) | 2013-01-16 |
Family
ID=47500120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315989 Expired - Fee Related CN202679248U (en) | 2012-07-02 | 2012-07-02 | Power supply adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980048A (en) * | 2015-08-08 | 2015-10-14 | 张新安 | Power adapter with low cost |
| CN112003469A (en) * | 2020-08-18 | 2020-11-27 | 奇瑞商用车（安徽）有限公司 | Structure for judging DC/DC output state and manufacturing method thereof |
-
2012
- 2012-07-02 CN CN 201220315989 patent/CN202679248U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980048A (en) * | 2015-08-08 | 2015-10-14 | 张新安 | Power adapter with low cost |
| CN112003469A (en) * | 2020-08-18 | 2020-11-27 | 奇瑞商用车（安徽）有限公司 | Structure for judging DC/DC output state and manufacturing method thereof |
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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: 20130116 Termination date: 20140702 |
|
| EXPY | Termination of patent right or utility model |