CN201118455Y - A power adapter for adjustable output voltage - Google Patents
A power adapter for adjustable output voltage Download PDFInfo
- Publication number
- CN201118455Y CN201118455Y CNU2007200560530U CN200720056053U CN201118455Y CN 201118455 Y CN201118455 Y CN 201118455Y CN U2007200560530 U CNU2007200560530 U CN U2007200560530U CN 200720056053 U CN200720056053 U CN 200720056053U CN 201118455 Y CN201118455 Y CN 201118455Y
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- Prior art keywords
- power supply
- supply adaptor
- output voltage
- voltage regulator
- circuit
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000004065 semiconductor Substances 0.000 claims description 11
- 238000005070 sampling Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A power adapter with adjustable output voltage comprises a power adapter which is connected with a voltage regulator. First, the voltage regulator is arranged on the power adaptor, so that the utility model can be regulated according to different voltage needs and can be applied to different equipment to facilitate application; second, a digital display is arranged on the voltage regulator, so the output voltage value can be clearly shown to facilitate operation.
Description
Technical field
The utility model relates to a kind of power supply adaptor, relates in particular to the power supply adaptor of a kind of notebook or other mobile devices.
Background technology
Power supply adaptor of the prior art generally is made of housing and the circuit that is installed in the housing, and power supply adaptor can convert common civil power to notebook or the required DC power supply of other mobile devices.And present power supply adaptor is corresponding one by one with equipment, and promptly a kind of equipment needs a power supply adaptor.All there is plurality of devices in each family now, often needs a plurality of power supply adaptors, when needed, plugs different power supply adaptors, and is cumbersome like this, uses also very inconvenient.Equally, also caused the waste of resource.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of power supply adaptor that can provide different voltages and Adjustable Output Voltage easy to use to save is provided.
The power supply adaptor that a kind of Adjustable Output Voltage that provides according to the utility model saves comprises a power supply adaptor, and described power supply adaptor is connected with a voltage regulator.
The power supply adaptor that a kind of Adjustable Output Voltage that provides according to the utility model saves also has following attached technical characterictic:
Described voltage regulator is installed on the described power supply adaptor.
Described voltage regulator is connected by connecting line with described power supply adaptor, and described voltage regulator is provided with output connection.
Described voltage regulator is provided with digital display screen.
Described voltage regulator comprises a housing and is arranged on control circuit in the described housing, and described control circuit comprises central processing unit, by the regulating circuit and the digital drive circuit of described central processing unit control, and described digital drive circuit is connected with a digital display screen.
Described control circuit also comprises overvoltage crowbar and current protecting circuit.
Described regulating circuit comprises a plurality of metal-oxide-semiconductors and a plurality of resistance that are connected by described metal-oxide-semiconductor, and described central processing unit is controlled described metal-oxide-semiconductor conducting, thereby the resistance of varying number is inserted in the power supply.
The power supply adaptor that a kind of Adjustable Output Voltage that provides according to the utility model saves compared with prior art has following advantage: at first, the utility model power supply adaptor is provided with voltage regulator, can adjust according to different voltage needs, can be suitable for different equipment like this, make things convenient for use; Secondly, voltage regulator is provided with digital display screen, can clearly demonstrate the magnitude of voltage of output, handled easily.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 is a system block diagram of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, according to the preferred embodiment that the utility model provides, comprise a power supply adaptor 1, described power supply adaptor 1 is connected with a voltage regulator 2.Described power supply adaptor 1 comprises housing, is installed in AC/DC change-over circuit, filter circuit and protective circuit or the like in the housing, can convert alternating current to direct current like this, uses for other equipment, such as notebook computer.These structures belong to the product of comparative maturity in the prior art, and its concrete structure repeats no more herein.
Referring to Fig. 1, in the foregoing description that the utility model provides, described voltage regulator 2 and described power supply adaptor 1 are connected by connecting line, and described voltage regulator 2 is provided with output connection.This structure is made the branch body structure with voltage regulator 2 and power supply adaptor 1, and both are connected by connecting line 3.
Referring to Fig. 1, in the foregoing description that the utility model provides, described voltage regulator 2 is provided with digital display screen 21.Described digital display screen 21 is connected with the circuit in the voltage regulator 2, can demonstrate the magnitude of voltage of voltage regulator output, like this, can demonstrate the voltage of voltage regulator 2 outputs easily, is beneficial to user's operation and use.
In the foregoing description that the utility model provides, described voltage regulator 2 comprises a housing and the control circuit that is arranged in the described housing, described control circuit comprises central processing unit, by the regulating circuit and the digital drive circuit of the control of described central processing unit, described digital drive circuit is connected with digital display screen.Described central processing unit adopts single-chip microcomputer, as PICFSS3 type single-chip microcomputer.Described digital display screen is made up of a plurality of digital display tubes, and each digital display tube is connected with described single-chip microcomputer, and drives demonstration by described digital drive circuit.Like this, the pressure regulation information in the single-chip microcomputer can be shown by described digital display screen, the convenient use.Described digital drive circuit is made up of triode Q7, Q8, Q9 and resistance R 33, R34, R35.
Referring to Fig. 2 and Fig. 3, in the foregoing description that the utility model provides, described control circuit also comprises overvoltage crowbar and current protecting circuit.Described excess voltage protection is by voltage sampling circuit and A/D change-over circuit; the voltage signal of power supply output is taken a sample through voltage sampling circuit; sampled signal carries out sending in the single-chip microcomputer after the analog-to-digital conversion through the A/D change-over circuit; single-chip microcomputer sample information of voltage analyze comparison with the voltage that is provided with in advance; if overvoltage then single-chip microcomputer can be exported a high level; force the protective circuit work on the power supply adaptor; make power supply automatically adjust; carry out output protection; if it is normal that voltage recovers, single-chip microcomputer then can quit work by control protection electric circuit.The utility model can produce the output of different voltage, and corresponding all have a correspondent voltage protection value, for example requires output 15V, and reality makes for a certain reason and then overvoltage has been described by the higher 18V that reaches of output, can carry out output protection at once.
Referring to Fig. 2 and Fig. 3; in the foregoing description that the utility model provides; described current protecting circuit comprises current sampling circuit, signal processing circuit and A/D change-over circuit; described current sampling circuit is connected on the power supply; the current signal of power supply is converted into voltage signal; but, be not easy to the collection of single-chip microcomputer because the voltage signal that has just inserted is fainter.Therefore; described signal processing circuit can be amplified to faint voltage signal single-chip microcomputer and can discern; this moment, single-chip microcomputer just compared voltage signal of gathering and the magnitude of voltage that has set in advance; equally; if magnitude of voltage surpasses specified protection value, then same output protection control signal.The utility model can be according to different voltage output, and what correspondence was set also all has corresponding current protection value to guarantee power safety, for example; the output of 70W power supply, during 15V, theoretical current should be 4.7A; if this moment short circuit occurs or output current is excessive, when arriving 5.6A, promptly overcurrent has been described; carry out overcurrent protection immediately; during protection, electric power output voltage reduces, and monitoring constantly; when output current is lower than 5.6A, de-preservation then.
Above-mentioned two protective circuits can effectively guarantee of the present utility model safe in utilization, thereby improve the fail safe of entire equipment.
Referring to Fig. 2 and Fig. 3, in the foregoing description that the utility model provides, described regulating circuit comprises a plurality of metal-oxide-semiconductors and a plurality of resistance that are connected by described metal-oxide-semiconductor, and described central processing unit is controlled described metal-oxide-semiconductor conducting, thereby the resistance of varying number is inserted in the power supply.The user carries out the selection of voltage according to the needs of oneself, single-chip microcomputer is to metal-oxide-semiconductor Q1, Q2, Q3, Q4, Q5, Q6, the break-make of Q7 is controlled and is made it as analog switch, to forming resistor network adjustment by described resistance R 11, R2, R12, R13, R14, R15, thereby for power supply provides suitable resistance, make power supply export the magnitude of voltage of corresponding demonstration, satisfy user's demand.For example, require the voltage of output 16V, then this moment, metal-oxide-semiconductor had only the Q1 conducting, and other all end.The resistance value that this moment, control board provided for power supply adaptor is 18K.
Claims (6)
1, a kind of power supply adaptor of Adjustable Output Voltage joint comprises a power supply adaptor, and it is characterized in that: the output of described power supply adaptor is connected with a voltage regulator.
2, the power supply adaptor of Adjustable Output Voltage joint as claimed in claim 1, it is characterized in that: described voltage regulator is connected by connecting line with described power supply adaptor, and described voltage regulator is provided with output connection.
3, the power supply adaptor of Adjustable Output Voltage joint as claimed in claim 1, it is characterized in that: described voltage regulator is provided with digital display screen.
4, the power supply adaptor of Adjustable Output Voltage joint as claimed in claim 1, it is characterized in that: described voltage regulator comprises a housing and the control circuit that is arranged in the described housing, described control circuit comprises central processing unit, by the regulating circuit and the digital drive circuit of the control of described central processing unit, described digital drive circuit is connected with a digital display screen.
5, the power supply adaptor of Adjustable Output Voltage joint as claimed in claim 4, it is characterized in that: described control circuit also comprises overvoltage crowbar and current protecting circuit.
6, the power supply adaptor of Adjustable Output Voltage joint as claimed in claim 4, it is characterized in that: described regulating circuit comprises a plurality of metal-oxide-semiconductors and a plurality of resistance that are connected by described metal-oxide-semiconductor, described central processing unit is controlled described metal-oxide-semiconductor conducting, thereby the resistance of varying number is inserted in the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200560530U CN201118455Y (en) | 2007-08-27 | 2007-08-27 | A power adapter for adjustable output voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200560530U CN201118455Y (en) | 2007-08-27 | 2007-08-27 | A power adapter for adjustable output voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118455Y true CN201118455Y (en) | 2008-09-17 |
Family
ID=39993048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200560530U Expired - Lifetime CN201118455Y (en) | 2007-08-27 | 2007-08-27 | A power adapter for adjustable output voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201118455Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576823A (en) * | 2012-08-10 | 2014-02-12 | 明华电压自动调节科技有限公司 | Voltage Regulating Device |
| CN104716838A (en) * | 2015-04-10 | 2015-06-17 | 成都千嘉科技有限公司 | Dc-dc power converter circuit |
| CN106136643A (en) * | 2016-07-01 | 2016-11-23 | 芜湖宝瓶智能化服务外包有限公司 | A kind of desk tops multifunctional low-voltage electric power system |
-
2007
- 2007-08-27 CN CNU2007200560530U patent/CN201118455Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576823A (en) * | 2012-08-10 | 2014-02-12 | 明华电压自动调节科技有限公司 | Voltage Regulating Device |
| CN103576823B (en) * | 2012-08-10 | 2016-03-16 | 明华电压自动调节科技有限公司 | Voltage Regulating Device |
| CN104716838A (en) * | 2015-04-10 | 2015-06-17 | 成都千嘉科技有限公司 | Dc-dc power converter circuit |
| CN106136643A (en) * | 2016-07-01 | 2016-11-23 | 芜湖宝瓶智能化服务外包有限公司 | A kind of desk tops multifunctional low-voltage electric power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG STIGER ELECTRONIC TECHNOLOGY CO.,LTD Free format text: FORMER OWNER: HUANG TING Effective date: 20100727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510000 BUILDING 5, EAST OF HONGTU INDUSTRIAL PARK, DASHILI VILLAGE, FANYU DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE TO: 510000 1-3/F, NO.2, FACTORY BUILDING, STANDARD INDUSTRIAL PARK, TAISHI VILLAGE, DONGYONG TOWN, FANYU DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE, 1/F, BUIDLING 7 |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100727 Address after: 510000, Guangdong, Panyu District province Guangzhou Tung Chung Town, Shek Wan Standard Industrial Park, plant No. 1-3, 2, No. 7 first floor Patentee after: Guangdong Stiger Electronic Technology Co., Ltd. Address before: 510000 Guangdong city of Guangzhou province Panyu District Dashi Village Li Hung Industrial Park East Building five Patentee before: Huang Ting |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080917 |
|
| CX01 | Expiry of patent term |