CN202267911U - Power supply circuit of computer to external device - Google Patents
Power supply circuit of computer to external device Download PDFInfo
- Publication number
- CN202267911U CN202267911U CN2011202982016U CN201120298201U CN202267911U CN 202267911 U CN202267911 U CN 202267911U CN 2011202982016 U CN2011202982016 U CN 2011202982016U CN 201120298201 U CN201120298201 U CN 201120298201U CN 202267911 U CN202267911 U CN 202267911U
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- China
- Prior art keywords
- power supply
- computer
- external equipment
- resistance
- voltage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a power supply circuit of a computer to an external device, which comprises a system power supply, a voltage conversion circuit and a power supply interface. The system power supply converts an external power supply and generates system voltage. The voltage conversion circuit is electrically connected with the system power supply and used for converting the system voltage into power supply voltage suitable for the external device. The power supply interface is electrically connected with the voltage conversion circuit to power the electrical connection of the external device. By means of the power supply circuit of the computer to the external device, an internal power supply of the computer can supply power to the external device, and the power supply circuit can satisfy working voltage with different requirements to supply power to the external device through adjustment of the voltage conversion circuit.
Description
[technical field]
The utility model relates to the feed circuit of a kind of computer to external equipment, particularly relates to the feed circuit of a kind of computer internal electric source to external equipment.
[background technology]
Along with the development of science and technology progress, electronic product more and more widely be applied to family and office occasion, especially personal desktop computer and notebook computer, become necessary tool in the people life especially.
The internal electric source of present computer only limits to itself supply power to own, and perhaps power supply only limits to the 5V fixed voltage is supplied power like USB.The external equipment that can not be other pressure value to the WV of different demands is supplied power.
In view of this, be necessary to develop the feed circuit of a kind of computer in fact, to address the above problem to external equipment.
[summary of the invention]
Therefore, the purpose of the utility model provides the feed circuit of a kind of computer to external equipment, can supply power to the external equipment of different operating voltage.
In order to achieve the above object, the computer that the utility model provides is to the feed circuit of external equipment, and said feed circuit comprise:
System power supply, it is changed external power source and produces a system voltage;
Voltage conversion circuit electrically connects with said system power supply, said system voltage is converted into the supply voltage that meets external equipment work;
Power supply interface electrically connects with said voltage conversion circuit, in order to external equipment is electrically connected power supply.
Optional, said computer is a desktop computer, the power supply of said external power source for obtaining through the power supply adaptor conversion.
Optional, said computer is a notebook computer, said external power source perhaps is Notebook Battery for the power supply that obtains through the power supply adaptor conversion.
Optional, said system voltage is 12～～19V.
Optional, said voltage conversion circuit comprises: and low pressure difference linear voltage regulator (low dropoutregulator, LDO), regulate resistance; Said low pressure difference linear voltage regulator has signal pins, grounding pin, activation pin, regulates pin and output pin; Said signal pins connects the said system voltage of said system power supply; Said grounding pin ground connection; Said activation pin connects enable signal and starts according to enable signal or close said output pin, said output pin output fixed current, and said output pin connects said power supply interface; Said adjusting resistance comprises first resistance and second resistance; Said first resistance and the series connection of said second resistance; One of said first resistance is terminated between said output pin and said power supply interface; Said second resistance is away from an end ground connection of said first resistance, and said adjusting pin is connected between said first resistance and said second resistance.
Optional, said computer comprises several said voltage conversion circuits to the feed circuit of external equipment.
Optional, said voltage conversion circuit also comprises shunt capacitance, and said shunt capacitance one is terminated between the signal pins of system voltage and said low pressure difference linear voltage regulator of said system power supply, said shunt capacitance other end ground connection.
Optional, said voltage conversion circuit also comprises filter capacitor, said filter capacitor one is terminated between said first resistance and said power supply interface, said filter capacitor other end ground connection.
Optional, said enable signal is a 5V activation voltage.
Optional, said power supply interface is mobile phone power supply interface, radio power supply interface or USB (UniversalSerial BUS, a USB) interface.
Compared to prior art; Utilize the feed circuit of the computer of the utility model to external equipment; The internal electric source of computer can be supplied power to external equipment, and can satisfy the external equipment of the WV of different demands and supply power through the adjusting of voltage conversion circuit.
[description of drawings]
Fig. 1 illustrates and is the computer of the utility model modular structure synoptic diagram to feed circuit one preferred embodiment of external equipment.
Fig. 2 illustrates and is the computer of the utility model electrical block diagram to feed circuit one preferred embodiment of external equipment.
[embodiment]
See also Fig. 1, Fig. 1 illustrates and is the computer of the utility model modular structure synoptic diagram to feed circuit one preferred embodiment of external equipment.
In order to achieve the above object, the computer that the utility model provides is to the feed circuit of external equipment, and said feed circuit comprise:
System power supply 1, it is changed external power source 2 and produces a system voltage;
Voltage conversion circuit 3 electrically connects with said system power supply 1, said system voltage is converted into the supply voltage that meets external equipment 4 work;
Power supply interface 5 electrically connects with said voltage conversion circuit 3, in order to external equipment 4 is electrically connected power supply.
Wherein, when said computer is a desktop computer, the power supply of said external power source 2 for obtaining through the power supply adaptor conversion.
Wherein, when said computer is a notebook computer, said external power source 2 is for the power supply that obtains through the power supply adaptor conversion or be Notebook Battery.And when said external power source 2 is Notebook Battery, can reach when not having the supply socket power supply around, external equipment 4 is supplied power, thereby improved convenience greatly.
Wherein, said system voltage can be for 12～～19V.
Wherein, said power supply interface 5 can be mobile phone power supply interface, radio power supply interface or USB (Universal Serial BUS, USB) interface.
It is thus clear that; Utilize the feed circuit of the computer of the utility model to external equipment; The inner system power supply 1 of computer can be through the adjusting of voltage conversion circuit 3; External equipment 4 is supplied power, and can satisfy the external equipment 4 of different demand WVs is supplied power through the adjusting of voltage conversion circuit 3.
Please consult Fig. 2 again, Fig. 2 illustrates and is the computer of the utility model electrical block diagram to feed circuit one preferred embodiment of external equipment.
In present embodiment, said voltage conversion circuit 3 comprises: and low pressure difference linear voltage regulator 30 (low dropoutregulator, LDO), regulate resistance; Said low pressure difference linear voltage regulator 30 has signal pins 31, grounding pin 32, activation pin 33, regulates pin 34 and output pin 35; Said signal pins 31 connects the said system voltage of said system power supply 1; Said grounding pin 32 ground connection; Said activation pin 33 connects enable signal and starts according to enable signal or close said output pin 35, said output pin 35 output fixed currents, and said output pin 35 connects said power supply interface 5; Said adjusting resistance comprises first resistance 36 and second resistance 37; Said first resistance 36 and 37 series connection of said second resistance; One of said first resistance 36 is terminated at 5 of said output pin 35 and said power supply interfaces; Said second resistance 37 is away from an end ground connection of said first resistance 36, and said adjusting pin 34 is connected to 37 of said first resistance 36 and said second resistance.
Wherein, said enable signal can be 5V activation voltage.
Through regulating said first resistance 36 and said second resistance 37, can reach the adjusting of the voltage that said power supply interface 5 is exported, to meet consumers' demand.
Certainly; Said computer can comprise several said voltage conversion circuits 3 to the feed circuit of external equipment; This sentences structure identical two and is example; The purpose that adopts a plurality of voltage conversion circuits 3 is that the electric current that can reach at said power supply interface 5 places strengthens to some extent, to satisfy the demand of user to high current.
Wherein, In present embodiment, said voltage conversion circuit 3 can also comprise shunt capacitance 38, in order to compensation; Said shunt capacitance 38 1 is terminated at 31 of the signal pins of system voltage and the said low pressure difference linear voltage regulator 30 of said system power supply 1, said shunt capacitance 38 other end ground connection.
Wherein, in present embodiment, said voltage conversion circuit 3 can also comprise filter capacitor 39, and in order to filtering, voltage stabilizing, said filter capacitor 39 1 is terminated at 5 of said first resistance 36 and said power supply interfaces, said filter capacitor 39 other end ground connection.
Claims (10)
1. a computer is characterized in that to the feed circuit of external equipment said feed circuit comprise:
System power supply, it is changed external power source and produces a system voltage;
Voltage conversion circuit electrically connects with said system power supply, said system voltage is converted into the supply voltage that meets external equipment work;
Power supply interface electrically connects with said voltage conversion circuit, in order to external equipment is electrically connected power supply.
2. computer as claimed in claim 1 is characterized in that to the feed circuit of external equipment said computer is a desktop computer, the power supply of said external power source for obtaining through the power supply adaptor conversion.
3. computer as claimed in claim 1 is characterized in that to the feed circuit of external equipment said computer is a notebook computer, and said external power source perhaps is Notebook Battery for the power supply that obtains through the power supply adaptor conversion.
4. computer as claimed in claim 1 is characterized in that the feed circuit of external equipment, said system voltage is 12～～19V.
5. computer as claimed in claim 1 is characterized in that to the feed circuit of external equipment said voltage conversion circuit comprises: low pressure difference linear voltage regulator, adjusting resistance; Said low pressure difference linear voltage regulator has signal pins, grounding pin, activation pin, regulates pin and output pin; Said signal pins connects the said system voltage of said system power supply; Said grounding pin ground connection; Said activation pin connects enable signal and starts according to enable signal or close said output pin, said output pin output fixed current, and said output pin connects said power supply interface; Said adjusting resistance comprises first resistance and second resistance; Said first resistance and the series connection of said second resistance; One of said first resistance is terminated between said output pin and said power supply interface; Said second resistance is away from an end ground connection of said first resistance, and said adjusting pin is connected between said first resistance and said second resistance.
6. computer as claimed in claim 5 is characterized in that to the feed circuit of external equipment said computer comprises several said voltage conversion circuits to the feed circuit of external equipment.
7. computer as claimed in claim 5 is to the feed circuit of external equipment; It is characterized in that; Said voltage conversion circuit also comprises shunt capacitance; Said shunt capacitance one is terminated between the signal pins of system voltage and said low pressure difference linear voltage regulator of said system power supply, said shunt capacitance other end ground connection.
8. computer as claimed in claim 5 is characterized in that to the feed circuit of external equipment said voltage conversion circuit also comprises filter capacitor, and said filter capacitor one is terminated between said first resistance and said power supply interface, said filter capacitor other end ground connection.
9. computer as claimed in claim 5 is characterized in that to the feed circuit of external equipment said enable signal is a 5V activation voltage.
10. computer as claimed in claim 1 is characterized in that the feed circuit of external equipment,, said power supply interface is mobile phone power supply interface, radio power supply interface or USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202982016U CN202267911U (en) | 2011-08-17 | 2011-08-17 | Power supply circuit of computer to external device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202982016U CN202267911U (en) | 2011-08-17 | 2011-08-17 | Power supply circuit of computer to external device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267911U true CN202267911U (en) | 2012-06-06 |
Family
ID=46158697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202982016U Withdrawn - After Issue CN202267911U (en) | 2011-08-17 | 2011-08-17 | Power supply circuit of computer to external device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955546A (en) * | 2011-08-17 | 2013-03-06 | 神讯电脑(昆山)有限公司 | Computer power supply circuit for external devices |
| CN103902008A (en) * | 2012-12-26 | 2014-07-02 | 国际商业机器公司 | Determining redundancy in a power distribution system |
-
2011
- 2011-08-17 CN CN2011202982016U patent/CN202267911U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955546A (en) * | 2011-08-17 | 2013-03-06 | 神讯电脑(昆山)有限公司 | Computer power supply circuit for external devices |
| CN102955546B (en) * | 2011-08-17 | 2016-08-10 | 神讯电脑(昆山)有限公司 | The computer power supply circuits to external equipment |
| CN103902008A (en) * | 2012-12-26 | 2014-07-02 | 国际商业机器公司 | Determining redundancy in a power distribution system |
| CN103902008B (en) * | 2012-12-26 | 2017-11-03 | 联想企业方案（新加坡）有限公司 | Method and system for determining redundancy in electric power distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |