CN101145076A - Automatic cut-off device of display - Google Patents
Automatic cut-off device of display Download PDFInfo
- Publication number
- CN101145076A CN101145076A CNA2006100625751A CN200610062575A CN101145076A CN 101145076 A CN101145076 A CN 101145076A CN A2006100625751 A CNA2006100625751 A CN A2006100625751A CN 200610062575 A CN200610062575 A CN 200610062575A CN 101145076 A CN101145076 A CN 101145076A
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- Prior art keywords
- display
- power supply
- relay
- supply unit
- coil
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Abstract
The present invention relates to a automatic breaker for displays comprises a power supplier and a relay; the power supplier comprises an input end and an output end; the relay comprises a coil and a normally open contact; the input end of the power supplier is connected with a power; the output end of the power supplier is connected with one end of the coil of the relay; while the other end of the coil is earthed; the power is connected with a display via the normally open contact of the relay.
Description
Technical field
The present invention relates to a kind of display breaker device, particularly a kind of auto-power-off device of graphoscope.
Background technology
Electric energy is a crucial energy, and along with the continuous progressive development of society, people are also more and more stronger to the dependence of electric energy.Therefore, energy-conservationly seem important unusually.Display is the important component part of computing machine, has huge quantity in the world.Yet the on-off mode of display mainly still adopts hand switch at present, though the time spent opening power, powered-down when not using.Because people have been accustomed to the software shutdown of computing machine, therefore forget the power supply of turning off display through regular meeting, though make and closed main frame, display still is in the energising armed state.Can produce following problem this moment: at first secondly display can quicken the display interior assembly and wear out because energising always can consume a large amount of electric energy, has shortened the serviceable life of display.
Summary of the invention
In view of above content, be necessary to provide a kind of automatic cut-off device of display, realize automatic control to monitor switch.
A kind of automatic cut-off device of display, comprise a power supply unit and a relay, described power supply unit comprises an input end and an output terminal, described relay comprises a coil and a normally opened contact, described power supply unit input end is used for linking to each other with a power supply, described power supply unit output terminal links to each other with coil one end of described relay, the other end ground connection of described coil, and described power supply is connected to a display through the normally opened contact of described relay.
Compare prior art, described automatic cut-off device of display can produce the normally opened contact adhesive of the coil of the described relay of voltage output control with described relay, described display energising work by its power supply unit output terminal when energising; The voltage output of described power supply unit output terminal when outage of described automatic cut-off device of display disappears, and the coil of described relay is decontroled the normally opened contact of described relay, and described display outage is closed.Therefore the switch of may command display when main frame is carried out switching manipulation, and do not need the switch of manual operation display, avoided it being ready always, thereby saved electric energy, prolonged the serviceable life of display because of the user forgets to close display.
Description of drawings
Below in conjunction with accompanying drawing and better embodiment the present invention is described in further detail:
Fig. 1 is the circuit diagram of the better embodiment of automatic cut-off device of display of the present invention.
Embodiment
Please refer to Fig. 1, automatic cut-off device of display 300 of the present invention comprises a power supply unit 100, a relay K and a diode D, described power supply unit 100 comprise an input end with-+the 12V output terminal.Described relay K comprises a coil K1 and a normally opened contact K2, the input end of described power supply unit 100 is used for linking to each other with a mains supply, described power supply unit 100+the 12V output terminal links to each other with coil K1 one end of described relay K, the other end ground connection of described coil K1, described relay K two ends described diode D in parallel, the negative electrode of described diode D with described power supply unit 100+the 12V output terminal links to each other, the plus earth of described diode D, described mains supply also can be connected to a display 200 through the normally opened contact K2 of described relay K.
During computer booting, open the main frame switch, described mains supply passes through described power supply unit 100+12V output terminal and produces 12V voltage output, described 12V voltage output is carried in the coil K1 two ends of described relay K, described relay K energising work, and with described normally opened contact K2 adhesive, make described mains supply and described display 200 connect display 200 energising work by the coil K1 of described relay K; During computer shutdown, the host switch of shutting down computer, the output of stopping power supply of described power supply unit 100, the 12V voltage of described+12V output terminal output simultaneously also disappears thereupon, described relay K quits work, the coil K1 of described relay K decontrols the normally opened contact K2 of original adhesive, make described mains supply and described display 200 disconnect, display 200 outages are closed, switching manipulation by main frame has realized the control to the display automatic switch thus, nor can be because the user forget that closing display makes display be in holding state always.
Described relay K is as the power supply control element of display; can produce a reverse high voltage pulse in the moment of its shutoff; might puncture the coil K1 of relay or other elements in the power supply; therefore by absorbing the high voltage pulse that relay produces at shutdown moment, thereby realized effective protection to other elements in relay coil and the power supply at the coil K1 two ends of a described relay K diode D in parallel.
Claims (4)
1. automatic cut-off device of display, comprise a power supply unit and a relay, described power supply unit comprises an input end and an output terminal, described relay comprises a coil and a normally opened contact, described power supply unit input end is used for linking to each other with a power supply, described power supply unit output terminal links to each other with coil one end of described relay, the other end ground connection of described coil, and described power supply is connected to a display through the normally opened contact of described relay.
2. automatic cut-off device of display as claimed in claim 1 is characterized in that: the power supply that input end connects of described power supply unit is a civil power.
3. automatic cut-off device of display as claimed in claim 2 is characterized in that: the output terminal of described power supply unit is one+12V output terminal.
4. automatic cut-off device of display as claimed in claim 3 is characterized in that: described relay coil two ends diode also in parallel, the negative electrode of described diode with described power supply unit+the 12V output terminal links to each other plus earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100625751A CN101145076A (en) | 2006-09-13 | 2006-09-13 | Automatic cut-off device of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100625751A CN101145076A (en) | 2006-09-13 | 2006-09-13 | Automatic cut-off device of display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101145076A true CN101145076A (en) | 2008-03-19 |
Family
ID=39207627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100625751A Pending CN101145076A (en) | 2006-09-13 | 2006-09-13 | Automatic cut-off device of display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101145076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995935A (en) * | 2009-08-12 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Display |
| CN104360728A (en) * | 2014-11-29 | 2015-02-18 | 济南职业学院 | Industrial computer power supply switch control circuit |
-
2006
- 2006-09-13 CN CNA2006100625751A patent/CN101145076A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995935A (en) * | 2009-08-12 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Display |
| CN104360728A (en) * | 2014-11-29 | 2015-02-18 | 济南职业学院 | Industrial computer power supply switch control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |