CN101741110B - Feature simulating circuit of charging device - Google Patents
Feature simulating circuit of charging device Download PDFInfo
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- CN101741110B CN101741110B CN2008101791211A CN200810179121A CN101741110B CN 101741110 B CN101741110 B CN 101741110B CN 2008101791211 A CN2008101791211 A CN 2008101791211A CN 200810179121 A CN200810179121 A CN 200810179121A CN 101741110 B CN101741110 B CN 101741110B
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- 238000010586 diagram Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
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Abstract
The invention relates to a feature simulating circuit of a charging device, which is used for simulating the charging device and comprises a universal serial bus, a first switch, a second switch and a variable resistor, wherein the universal serial bus comprises a power supply pin electrically connected to a power supply, a ground potential pin electrically connected to a ground potential, and an identification pin; the variable resistor comprises a first endpoint, a second endpoint and a voltage-bleeding endpoint, wherein the voltage-bleeding endpoint is electrically connected to the identification pin; the first switch is electrically connected to the power supply and the first endpoint, and the second switch is s electrically connected to the ground potential and the second endpoint. When one of the first switch and the second switch is turned off, the other one is switched on, and then the feature simulating circuit simulates the charging device.
Description
Technical field
The invention relates to a kind of feature simulating circuit, and particularly relevant for a kind of feature simulating circuit of the charging device in order to emulation one feature circuit.
Background technology
When mobile phone charges, because the employed charging device of each manufacturer all has own ordered specification, a unified standard is not arranged, so charging device, particularly the charging device that charges by USB (universal serial bus) will be judged the charging device that belongs to which kind of specification with the impedance of pin.
Yet such design concerning the personnel that usually need to test charging device usefulness, in the face of various various specifications, must often be changed the result of different charging devices to obtain testing.On time cost, be suitable time and effort consuming far and away.
Therefore, how to design the feature simulating circuit of a new charging device, by single circuit can the various different sizes of emulation charging device, be the industry problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of feature simulating circuit of new charging device, by single circuit can the various different sizes of emulation charging device.
To achieve these goals, the invention provides a kind of feature simulating circuit of charging device,, comprise: USB, first switch, second switch and variable resistor in order to emulation one charging device.USB comprises: be electrically connected to the power supply pin of power supply, the earthing potential pin that is electrically connected to earthing potential and identification pin; Variable resistor comprises first end points, second end points and dividing potential drop end points, and wherein the dividing potential drop end points is electrically connected to the identification pin; First switch is electrically connected to the power supply and first end points; And second switch is electrically connected to the earthing potential and second end points; One of them is an open circuit wherein to work as first switch and second switch, and another is conducting, this charging device of emulation.
The invention has the advantages that and can utilize identification pin and variable resistor, again by one of them the conducting of first switch or second switch, circuit characteristic that can the emulation charging device, and reach above-mentioned purpose easily.
Behind the execution mode of consulting accompanying drawing and describing subsequently, this technical field has knows that usually the knowledgeable just can understand purpose of the present invention, and technological means of the present invention and enforcement aspect.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of appended accompanying drawing:
Fig. 1 is the schematic diagram of feature simulating circuit of the charging device of the first embodiment of the present invention;
Fig. 2 A is depicted as among the embodiment, the circuit diagram of the charging device circuit of one first label;
Fig. 2 B is the feature simulating circuit of the charging device of the first embodiment of the present invention carries out emulation to the charging device of first label a schematic diagram;
Fig. 3 A is depicted as among the embodiment, the circuit diagram of the charging device circuit of one second label; And
Fig. 3 B is the feature simulating circuit of the charging device of the first embodiment of the present invention carries out emulation to the charging device of second label a schematic diagram.
[primary clustering symbol description]
1: the feature simulating circuit 10 of charging device: USB
100: power supply pin 101: the earthing potential pin
102: identification pin 103: the differential document pin
Switch 14 in 12: the first: second switch
16: 160: the first end points of variable resistor
2: charging device circuit 20: USB
200: power supply pin 201: the earthing potential pin
202: identification pin 22: resistance
3: charging device circuit 30: USB
300: power supply pin 301: the earthing potential pin
302: identification pin 32: resistance
Embodiment
Please refer to Fig. 1, is the schematic diagram of feature simulating circuit 1 of the charging device of the first embodiment of the present invention.The feature simulating circuit 1 of charging device is in order to emulation one charging device (not illustrating).Charging device has different specifications for the mobile phone of different labels.Yet, the people who wants various charging device is tested, do not stop to change the time of charging device when different charging device specifications has increased test far and away, not only consuming time but also effort.The feature simulating circuit 1 of charging device promptly gets final product the charging device of the various different sizes of emulation by single circuit.
The feature simulating circuit 1 of charging device comprises: USB 10, first switch 12, second switch 14 and variable resistor 16.USB 10 comprises: power supply pin 100, earthing potential pin 101, identification pin 102 and two differential data pins 103.Wherein power supply pin 100 is electrically connected to power supply Vss, earthing potential pin 101 is electrically connected to earthing potential GND, and differential data pin 103 is to be connected to a main frame (not illustrating) at USB 10, uses when desiring to carry out the transmission of data.In the present embodiment, do not utilize differential data pin 103 in fact, so differential data pin 103 and non-essential assembly.In follow-up accompanying drawing,, no longer illustrate differential document pin 103 for asking illustrative ease.Variable resistor 16 comprises first end points 160, second end points 161 and dividing potential drop end points 162, and wherein dividing potential drop end points 162 is electrically connected to identification pin 102.First switch 12 is electrically connected to the power supply Vss and first end points 160, and second switch 14 is electrically connected to the earthing potential GND and second end points 161.
The charging device of different size is resistance and the potential end that is mainly electrically connected with the identification pin in the USB in each charging device, as the usefulness of specification identification.For instance, Fig. 2 A is depicted as among the embodiment, the circuit diagram of the charging device circuit 2 of one first label.Charging device circuit 2 comprises a USB 20 and a resistance 22.USB 20 comprises power supply pin 200, earthing potential pin 201 and identification pin 202.Wherein power supply pin 200 is electrically connected to power supply Vss, and earthing potential pin 201 is electrically connected to earthing potential GND.Resistance 22 is electrically connected between identification pin 202 and earthing potential GND.Therefore, the feature simulating circuit 1 of charging device of the present invention, will be shown in Fig. 2 B, first switch 12 is formed the state of open circuit, and second switch 14 is to close with conducting, and variable resistor 16 is set at the resistance value identical with resistance 22 in the resistance value of second end points 161 and dividing potential drop end points 162, circuit characteristic that can emulation charging device circuit 2.
In another embodiment, as shown in Figure 3A, the circuit diagram of the charging device circuit 3 of one second label, charging device circuit 3 comprise a USB 30 and a resistance 32.USB 30 comprises power supply pin 300, earthing potential pin 301 and identification pin 302.Wherein power supply pin 300 is electrically connected to power supply Vss, and earthing potential pin 301 is electrically connected to earthing potential GND.Resistance 32 is electrically connected between identification pin 302 and power supply Vss.Therefore, the feature simulating circuit 1 of charging device of the present invention, will be shown in Fig. 3 B, second switch 14 is formed the state of open circuit, and first switch 12 is to cut out with conducting, and variable resistor 16 is set at the resistance value identical with resistance 32 in the resistance value of first end points 160 and dividing potential drop end points 162, circuit characteristic that can emulation charging device circuit 3.
The design of the feature simulating circuit 1 by above-mentioned charging device, collocation by variable resistor 16, first switch 12 and second switch 14, can carry out emulation to different charging devices, and can power supply Vss be adjusted, to carry out the withstand voltage test of emulation charging device, or adjust other circuit part and do other emulation testing, for carrying out process of simulation, various different charging devices reach high efficiency, time saving and energy saving effect.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any person skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the scope that the accompanying Claim book defined.
Claims (5)
1. the feature simulating circuit of a charging device is characterized in that, comprises:
One USB comprises:
One power supply pin is electrically connected to a power supply;
One earthing potential pin is electrically connected to an earthing potential; And
One identification pin;
One variable resistor comprises one first end points, one second end points and a dividing potential drop end points, and wherein this dividing potential drop end points is electrically connected to this identification pin;
One first switch is electrically connected to this power supply and this first end points; And
One second switch is electrically connected to this earthing potential and this second end points;
One of them is an open circuit wherein to work as this first switch and this second switch, when another is conducting, and this charging device of emulation.
2. the feature simulating circuit of charging device according to claim 1 is characterized in that, this USB also comprises two differential data pins.
3. the feature simulating circuit of charging device according to claim 1 is characterized in that, this power supply is supplied a positive voltage.
4. the feature simulating circuit of charging device according to claim 1 is characterized in that, this variable-resistance resistance is the specification decision by this charging device.
5. the feature simulating circuit of charging device according to claim 1 is characterized in that, the open circuit of this first switch and this second switch or conducting are the specification decisions by this charging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101791211A CN101741110B (en) | 2008-11-25 | 2008-11-25 | Feature simulating circuit of charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101791211A CN101741110B (en) | 2008-11-25 | 2008-11-25 | Feature simulating circuit of charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101741110A CN101741110A (en) | 2010-06-16 |
| CN101741110B true CN101741110B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101791211A Expired - Fee Related CN101741110B (en) | 2008-11-25 | 2008-11-25 | Feature simulating circuit of charging device |
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| Country | Link |
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| CN (1) | CN101741110B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232107A (en) * | 2007-01-24 | 2008-07-30 | 中茂电子(深圳)有限公司 | Electronic load simulation charger operating method and apparatus thereof |
-
2008
- 2008-11-25 CN CN2008101791211A patent/CN101741110B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232107A (en) * | 2007-01-24 | 2008-07-30 | 中茂电子(深圳)有限公司 | Electronic load simulation charger operating method and apparatus thereof |
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| Publication number | Publication date |
|---|---|
| CN101741110A (en) | 2010-06-16 |
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| C14 | Grant of patent or utility model | ||
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: YINGYEDA CO., LTD., TAIWAN Effective date: 20141128 Owner name: KAIFENG POWER SUPPLY COMPANY STATE GRID HENAN ELE Effective date: 20141128 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cang Jianwei Inventor after: Chen Peng Inventor after: Li Jiangtao Inventor after: Gao Tianli Inventor after: Guo Furan Inventor before: Lai Jianhong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: 100031 XICHENG, BEIJING Free format text: CORRECT: INVENTOR; FROM: LAI JIANHONG TO: ZANG JIANWEI CHEN PENG LI JIANGTAO GAO TIANLI GUO FURAN |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141128 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: KAIFENG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER CO., LTD. Address before: Taipei City, Taiwan Chinese Shilin District Hougang Street No. sixty-six Patentee before: Inventec Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20171125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |