CN2531438Y - Power supply device using PC power source directly supply power to liquid crystal display and computer using said power supply device - Google Patents
Power supply device using PC power source directly supply power to liquid crystal display and computer using said power supply device Download PDFInfo
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- CN2531438Y CN2531438Y CN 01266354 CN01266354U CN2531438Y CN 2531438 Y CN2531438 Y CN 2531438Y CN 01266354 CN01266354 CN 01266354 CN 01266354 U CN01266354 U CN 01266354U CN 2531438 Y CN2531438 Y CN 2531438Y
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Abstract
Disclosed is a power supply device (1) which uses PC power supply to supply power directly to the liquid crystal display, which is characterized in that the utility model comprises a voltage stabilizing device (2), whose input end is connected with the plus 12 V winding output end to be used to control the output voltage of the PC power supply in the range of plus 12 V plus or minus 0.6 V; an overload protection device (3), whose input end is connected with the output end of the voltage stabilizing circuit to be used to protect the power supply from current shock when the liquid crystal display is connected with the PC power supply; a filter device (4), whose input end is connected with the output end of the overload protection device and output end is connected with the power supply input end of the liquid crystal display. The filter device is used to filter the noise caused by PC system running and the noise disturbance caused by poor shielding ability of transmission line. The utility model can not only save the adapter connected with the liquid crystal display, which can lower the cost of computer, but also avoid harassment of lead wire of adapter, which can simply structures of computer.
Description
Technical field
The utility model belongs to field of computer technology, and relate to particularly a kind of use PC power source to LCD directly power supply electric supply installation and use the desk-top computer of this electric supply installation.
Background technology
The used LCD of desk-top computer generally is powered by the adapter that links to each other with external power supply at present, wherein the specification of the adapter of 15 cun LCD use is+12V/3A, and the specification of the adapter of 17 cun LCD uses is+12V/5A.And the output winding electric of PC power source (host power supply of desk-top computer) is pressed with+12V ,+5V ,+3.3V.Therefore can with PC power source+output of 12V winding is by handling, and makes it to meet LCD power supply input needs.Yet owing to there is following problem: the input voltage fluctuation of (1) LCD must not surpass 5%, i.e. 12V ± 0.6V; (2) because LCD itself is a system that contains inductance (giving transducer backlight as power supply) and electric capacity, it can cause a very big rush of current to electric supply installation when inserting electric supply installation like this.Can reach 0.1us the perdurability of this pulse, and the current maxima of pulse can reach more than the 35A; (3) since PC power source itself+the 12V winding can power simultaneously to hard disk, CD-ROM drive, CPU etc., when these loaded work pieces, can cause the interference of some noises to power supply itself; (4) in addition and since from PC power source+power input that 12V holds LCD is by a DC line transferring electric power, extraneous noise can cause the display misoperation by the voltage input end that lead is transmitted to LCD.Therefore need do certain work at the power output end of PC power source and the cooperation between the LCD power input, and the specification of used adapter specification and PC power source generally has bigger difference, the use that can't combine is not used electric supply installation that PC power source directly powers to LCD and the computing machine that uses this electric supply installation thereof so still has at present.
Summary of the invention
A purpose of the present utility model is to provide a kind of electric supply installation that uses PC power source directly to power to LCD.It not only can be economized and remove the adapter that links to each other with LCD, has reduced the cost of computing machine, and has exempted the lead-in wire puzzlement of adapter, has simplified the structure of computing machine.
Another purpose of the present utility model is to provide a kind of computing machine that uses this electric supply installation.
According to an aspect of the present utility model, a kind of electric supply installation that uses PC power source directly to power to LCD is provided, it is characterized in that including a stable-pressure device, its input end and PC power source+12V winding output terminal links to each other, be used for output voltage with PC power source to be controlled at+scope of 12V ± 0.6V within; One overload protection arrangement, its input end links to each other with the output terminal of described mu balanced circuit, the rush of current that when being used to protect LCD to insert PC power source power supply is caused; One filter; its input end links to each other with the output terminal of described overload protection arrangement; and output terminal links to each other with the power input of LCD, is used for filtering because noise that the running of PC system causes and because the not good noise interference that causes of transfer wire screening ability.
In one embodiment, described stable-pressure device and described overload protection arrangement are set in the mainframe box of computing machine; Described filter includes: be arranged on the filter element in the computer mainframe box, its input end links to each other with the output terminal of described overload protection arrangement, is used for filtering because the noise that the running of PC system causes; One transfer wire, the one end links to each other with the output terminal of described filter element; Be arranged on another filter element in the LCD, its input end links to each other with the other end of described transfer wire and its output terminal links to each other with the power input of LCD, is used for filtering because the not good noise that causes of described transfer wire screening ability disturbs.
In one embodiment, described filter element is a filter capacitor.
In one embodiment, described transfer wire is a concentric cable.
According on the other hand of the present utility model, provide a kind of computing machine that uses above-mentioned electric supply installation.
According to use PC power source of the present utility model to LCD directly power supply electric supply installation and use the computing machine of this electric supply installation.It has the following advantages: not only can economize and remove the adapter that links to each other with LCD, reduce the cost of computing machine, and exempt the lead-in wire puzzlement of adapter, simplify the structure of computing machine.
Description of drawings
Fig. 1 is the block diagram according to electric supply installation of the present invention;
Fig. 2 is the block diagram according to the electric supply installation of one embodiment of the invention;
Fig. 3 is the physical circuit figure of the electric supply installation shown in Fig. 1.
Embodiment
Referring to Fig. 1, show block diagram according to electric supply installation of the present invention.A kind of electric supply installation 1 that uses PC power source directly to power to LCD, it is characterized in that including a stable-pressure device 2, its input end and PC power source+12V winding output terminal links to each other, be used for output voltage with PC power source to be controlled at+scope of 12V ± 0.6V within; One overload protection arrangement 3, its input end links to each other with the output terminal of described mu balanced circuit, the rush of current that when being used to protect LCD to insert PC power source power supply is caused; One filter 4; its input end links to each other with the output terminal of described overload protection arrangement; and output terminal links to each other with the power input of LCD, is used for filtering because noise that the running of PC system causes and because the not good noise interference that causes of transfer wire screening ability.
Referring to Fig. 2 and 3, show block diagram and physical circuit figure respectively according to the electric supply installation 1 of one embodiment of the invention, wherein stable-pressure device 2 and overload protection arrangement 3 are set in the mainframe box of computing machine; Described filter 4 includes: be arranged on a filter element 4A of the employing filter capacitor in the computer mainframe box, its input end links to each other with the output terminal of described overload protection arrangement 2, is used for filtering because the noise that the running of PC system causes; One adopts the transfer wire 5 of concentric cable, and the one end links to each other with the output terminal of described filter element 4A; Be arranged on another filter element 4B of the employing filter capacitor in the LCD, its input end links to each other with the other end of described transfer wire 5 and its output terminal links to each other with the power input of LCD, is used for filtering because the not good noise that causes of described transfer wire screening ability disturbs.
Those skilled in the art obviously understand, the numerical value that is used for the filter capacitor of filter element 4A and 4B is selected big more, its interference resistant ability is strong more, therefore by parameter or several electric capacity in parallel (effect is equivalent to and increases capacitance values) of two filter capacitors of adjusting, can realize the effect of required filtering noise information.In addition, overload comprises that the running parameter of device and stable-pressure device also all is adjustable, and the final effect that realizes also can be different because of the difference of parameter.Therefore, the technical parameter that is adopted in the specific implementation according to electric supply installation of the present utility model can't be enumerated one by one, is not breaking away under that limited by appended claim and prerequisites spirit and scope of the present utility model, can modify, change and equivalence is replaced.
Claims (5)
1, a kind of electric supply installation (1) that uses PC power source directly to power to LCD, it is characterized in that including a stable-pressure device (2), its input end and PC power source+12V winding output terminal links to each other, be used for output voltage with PC power source to be controlled at+scope of 12V ± 0.6V within; One overload protection arrangement (3), its input end links to each other with the output terminal of described mu balanced circuit, the rush of current that when being used to protect LCD to insert PC power source power supply is caused; One filter (4); its input end links to each other with the output terminal of described overload protection arrangement; and output terminal links to each other with the power input of LCD, is used for filtering because noise that the running of PC system causes and because the not good noise interference that causes of transfer wire screening ability.
2, electric supply installation according to claim 1 is characterized in that: described stable-pressure device (2) and described overload protection arrangement (3) are set in the mainframe box of computing machine; Described filter (4) includes: be arranged on the filter element (4A) in the computer mainframe box, its input end links to each other with the output terminal of described overload protection arrangement (3), is used for filtering because the noise that the running of PC system causes; One transfer wire (5), the one end links to each other with the output terminal of described filter element (4A); Be arranged on another filter element (4B) in the LCD, its input end links to each other with the other end of described transfer wire (5) and its output terminal links to each other with the power input of LCD, is used for filtering because the not good noise that causes of described transfer wire (5) screening ability disturbs.
3, electric supply installation according to claim 1 is characterized in that: described filter element (4A, 4B) is a filter capacitor.
4, electric supply installation according to claim 1 is characterized in that: described transfer wire (5) is a concentric cable.
5, a kind of computing machine is characterized in that, its electric supply installation (1) includes a stable-pressure device (2), its input end and PC power source+12V winding output terminal links to each other, be used for output voltage with PC power source to be controlled at+scope of 12V ± 0.6V within; One overload protection arrangement (3), its input end links to each other with the output terminal of described mu balanced circuit, the rush of current that when being used to protect LCD to insert PC power source power supply is caused; One filter (4); its input end links to each other with the output terminal of described overload protection arrangement; and output terminal links to each other with the power input of LCD, is used for filtering because noise that the running of PC system causes and because the not good noise interference that causes of transfer wire screening ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266354 CN2531438Y (en) | 2001-11-28 | 2001-11-28 | Power supply device using PC power source directly supply power to liquid crystal display and computer using said power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266354 CN2531438Y (en) | 2001-11-28 | 2001-11-28 | Power supply device using PC power source directly supply power to liquid crystal display and computer using said power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531438Y true CN2531438Y (en) | 2003-01-15 |
Family
ID=33673052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266354 Expired - Lifetime CN2531438Y (en) | 2001-11-28 | 2001-11-28 | Power supply device using PC power source directly supply power to liquid crystal display and computer using said power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531438Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887354A (en) * | 2010-05-26 | 2010-11-17 | 上海北大方正科技电脑系统有限公司 | Visual signal transmission and low voltage power supply combined system |
| US8345035B2 (en) | 2008-12-10 | 2013-01-01 | Innocom Technology (Shenzhen) Co., Ltd. | Liquid crystal display and display apparatus |
-
2001
- 2001-11-28 CN CN 01266354 patent/CN2531438Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8345035B2 (en) | 2008-12-10 | 2013-01-01 | Innocom Technology (Shenzhen) Co., Ltd. | Liquid crystal display and display apparatus |
| CN101887354A (en) * | 2010-05-26 | 2010-11-17 | 上海北大方正科技电脑系统有限公司 | Visual signal transmission and low voltage power supply combined system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111128 Granted publication date: 20030115 |