CN201285535Y - USB charging circuit and computer - Google Patents
USB charging circuit and computer Download PDFInfo
- Publication number
- CN201285535Y CN201285535Y CNU2008202131214U CN200820213121U CN201285535Y CN 201285535 Y CN201285535 Y CN 201285535Y CN U2008202131214 U CNU2008202131214 U CN U2008202131214U CN 200820213121 U CN200820213121 U CN 200820213121U CN 201285535 Y CN201285535 Y CN 201285535Y
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- circuit
- usb
- computer
- charging
- usb charging
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- 239000004065 semiconductor Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model is suitable for the technical field of electronic charging, and provides a USB charging circuit and a computer. The USB charging circuit comprises a charging module connected with a power supply circuit of the computer, and a USB interface connected with the output end of the charging module. In the utility model, the USB charging circuit directly utilizes the power supply circuit of the computer as the charging power supply, therefore, the USB charging circuit can charge an appliance under the shutdown mode of the computer, saves the energy, does not influence the service life of the computer, and is convenient for use.
Description
Technical field
The utility model belongs to the technical field of electronics charging, relates in particular to a kind of USB charging circuit and computing machine.
Background technology
Present USB (universal serial bus) (Universal Serial Bus, USB) application is increasingly extensive, a lot of electric equipments such as mobile phone, MP3, digital cameras etc. are all supported the USB interface charging, having the modal equipment of USB interface is computing machine, and along with popularizing of computing machine, it almost becomes the household electrical appliance of every household indispensability.Yet existing desk-top computer just can not utilize its USB interface that household electrical appliance are charged under shutdown mode, must just have charge function under power on mode.
Like this, both consumed the energy, also reduced the serviceable life of computing machine, and can not bring convenience for the user who seeks the USB charge power supply.
The utility model content
The purpose of this utility model is to provide a kind of USB charging circuit, is intended to solve the prior USB charging and has consumes energy, reduces the serviceable life of computing machine, and inconvenient problem with use.
The utility model is achieved in that a kind of USB charging circuit, and described USB charging circuit comprises:
The charging module that is connected with power circuit for computer; And
The USB interface that is connected with the output terminal of described charging module.
Another purpose of the present utility model is to provide a kind of computing machine that comprises above-mentioned USB charging circuit.
In the utility model, this USB charging circuit directly utilizes power circuit for computer as charge power supply, therefore under computing machine is in shutdown mode, this USB charging circuit also can charge to electrical equipment, this USB charging has energy savings, do not influence the serviceable life of computing machine, advantage easy to use.
Description of drawings
Fig. 1 is the theory diagram of the USB charging circuit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the theory structure of the USB charging circuit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model.
The USB charging circuit comprises: the charging module 101 that is connected with power circuit for computer; and the usb 1 02 that is connected with the output terminal of charging module 101; charging module 101 comprises the rectification circuit 1011 that is electrically connected successively; filtering circuit 1012 and mu balanced circuit 1013; charging module 101 is connected with power circuit for computer by rectification circuit 1011; charging module 101 is connected with usb 1 02 by mu balanced circuit 1013; as the utility model one embodiment; also be connected with the gauge tap 103 that unlatching or close current are passed through between mu balanced circuit 1013 and the usb 1 02; also be connected with the pwm control circuit 104 of the output current of usb 1 02 when being used to limit gauge tap 103 unlatchings between mu balanced circuit 1013 and the gauge tap 103; be connected with metal-oxide-semiconductor on-off circuit 106 between power circuit for computer and the rectification circuit 1011; be connected with testing circuit 105 between metal-oxide-semiconductor on-off circuit 106 and the pwm control circuit 104; metal-oxide-semiconductor on-off circuit 106 and testing circuit 105 constitute holding circuit; testing circuit 105 is taken a sample from pwm control circuit 104 and is controlled metal-oxide-semiconductor on-off circuit 106, the break-make between metal-oxide-semiconductor on-off circuit 106 control computer power circuits and the charging module 101.
The principle of work of USB charging circuit is:
When gauge tap 103 is opened, the 220V alternating current of power circuit for computer is through metal-oxide-semiconductor on-off circuit 106, charging module 101, pwm control circuit 104, gauge tap 103, at last from usb 1 02 output DC, for the electric equipment products of charging provide charge power supply;
When gauge tap 103 was closed, charging circuit was cut off, and the USB charging circuit can't provide charge power supply for the electric equipment products of charging;
The USB charging circuit that the utility model embodiment provides can be applied in the desk-top computer or portable computer of any class, any series.
In the utility model, this USB charging circuit directly utilizes power circuit for computer as charge power supply, therefore under computing machine is in shutdown mode, this USB charging circuit also can charge to electrical equipment, this USB charging has energy savings, do not influence the serviceable life of computing machine, advantage easy to use.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1, a kind of USB charging circuit is characterized in that, described USB charging circuit comprises:
The charging module that is connected with power circuit for computer; And
The USB interface that is connected with the output terminal of described charging module.
2, USB charging circuit as claimed in claim 1, it is characterized in that, described charging module comprises rectification circuit, filtering circuit and the mu balanced circuit that is electrically connected successively, described charging module is connected with described power circuit for computer by described rectification circuit, and described charging module is connected with described USB interface by described mu balanced circuit.
3, USB charging circuit as claimed in claim 2 is characterized in that,
Also be connected with the gauge tap that unlatching or close current are passed through between described mu balanced circuit and the described USB interface.
4, USB charging circuit as claimed in claim 3 is characterized in that, also is connected with the pwm control circuit of the output current of USB interface when being used to limit the gauge tap unlatching between described mu balanced circuit and the described gauge tap.
5, USB charging circuit as claimed in claim 4; it is characterized in that; be connected with the metal-oxide-semiconductor on-off circuit between described power circuit for computer and the described rectification circuit; be connected with testing circuit between described metal-oxide-semiconductor on-off circuit and the described pwm control circuit; described metal-oxide-semiconductor on-off circuit and described testing circuit constitute holding circuit; described testing circuit is taken a sample from pwm control circuit and is controlled the metal-oxide-semiconductor on-off circuit, and described metal-oxide-semiconductor on-off circuit is controlled the break-make between described power circuit for computer and the charging module.
6, a kind of computing machine that comprises the USB charging circuit is characterized in that, the USB charging circuit of described computing machine is each described USB charging circuit of claim 1 to 5.
7, computing machine as claimed in claim 6 is characterized in that, described computing machine is desk-top computer or portable computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202131214U CN201285535Y (en) | 2008-10-30 | 2008-10-30 | USB charging circuit and computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202131214U CN201285535Y (en) | 2008-10-30 | 2008-10-30 | USB charging circuit and computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201285535Y true CN201285535Y (en) | 2009-08-05 |
Family
ID=40950520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202131214U Expired - Fee Related CN201285535Y (en) | 2008-10-30 | 2008-10-30 | USB charging circuit and computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201285535Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768570A (en) * | 2011-12-23 | 2012-11-07 | 联想(北京)有限公司 | Electronic equipment |
| CN102779109A (en) * | 2011-04-22 | 2012-11-14 | 艾欧互联有限公司 | I/O module with power-uninterruptible USB port |
| CN103019350A (en) * | 2011-09-22 | 2013-04-03 | 奇智软件（北京）有限公司 | Control method and system for closing terminal with power supply interface |
| WO2015027834A1 (en) * | 2013-08-27 | 2015-03-05 | 华为终端有限公司 | Mobile power supply terminal and power supply method therefor |
| CN106786946A (en) * | 2016-12-27 | 2017-05-31 | 上海豊恒信息科技有限公司 | The USB circuit of notebook |
-
2008
- 2008-10-30 CN CNU2008202131214U patent/CN201285535Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779109A (en) * | 2011-04-22 | 2012-11-14 | 艾欧互联有限公司 | I/O module with power-uninterruptible USB port |
| CN103019350A (en) * | 2011-09-22 | 2013-04-03 | 奇智软件（北京）有限公司 | Control method and system for closing terminal with power supply interface |
| CN103019350B (en) * | 2011-09-22 | 2016-06-01 | 北京奇虎科技有限公司 | A kind of closing control method and system of the terminal for having power supply interface |
| CN102768570A (en) * | 2011-12-23 | 2012-11-07 | 联想(北京)有限公司 | Electronic equipment |
| CN102768570B (en) * | 2011-12-23 | 2016-10-05 | 联想(北京)有限公司 | A kind of electronic equipment |
| WO2015027834A1 (en) * | 2013-08-27 | 2015-03-05 | 华为终端有限公司 | Mobile power supply terminal and power supply method therefor |
| US9831698B2 (en) | 2013-08-27 | 2017-11-28 | Huawei Device Co., Ltd. | Mobile power supply terminal and power supply method thereof |
| CN106786946A (en) * | 2016-12-27 | 2017-05-31 | 上海豊恒信息科技有限公司 | The USB circuit of notebook |
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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: 20090805 Termination date: 20141030 |
|
| EXPY | Termination of patent right or utility model |