CN201348763Y - Device for implementing system on/off - Google Patents
Device for implementing system on/off Download PDFInfo
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- CN201348763Y CN201348763Y CNU2009200058350U CN200920005835U CN201348763Y CN 201348763 Y CN201348763 Y CN 201348763Y CN U2009200058350 U CNU2009200058350 U CN U2009200058350U CN 200920005835 U CN200920005835 U CN 200920005835U CN 201348763 Y CN201348763 Y CN 201348763Y
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- type flip
- flip flop
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- main electricity
- resistance
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Abstract
A device for implementing system on/off comprises: a D trigger the reset position of which is connected with a standby position of a main power supply for a device. The reset position also connects with one end of a capacitance and the other end of the capacitance connects with ground. The reset position of the D trigger is connected with a switch and connected with another resistor in series to ground. The output end of the D trigger is connected with the main power supply. When the main power supply is connected with the AC power supply, the system switches on. When the input end of the D trigger receives a high-level signal and the clock end receives the signal of the rising edge, the system switches off. When the system is off and the main power supply is connected with the AC power supply, the switch is closed for system on. The system on/off device has simple implementing and low cost.
Description
Technical field
The present invention relates to system switching machine field, relate in particular to comprise d type flip flop control circuit to power devices to reach the device of switching on and shutting down purpose.
Background technology
The application of energy-saving design in every field more and more widely, and be no exception in the communications field.At present, the power supply of computer power and some servers also is provided with the Standby power supply usually except primary power.Utilize these Standby power supplys can realize the switching on and shutting down of system easily.But when utilizing this Standby power supply to carry out the system switching machine, all need to cooperate special-purpose bridge sheet or power management chip, cost compares higher.Unless large-scale application is arranged, use special-purpose bridge sheet or chips incorporate Standby power supply realize the switching on and shutting down of system be not easy received.
The realization of General System switching on and shutting down mainly is by the control to direct supply.Chinese patent application 200610152895.6 provides a kind of D.C. regulated power supply switch controlling device.This control device comprises: keyswitch open in usual, signal input end, 555 timers and a d type flip flop.Wherein 555 timers and d type flip flop have played crucial effects in the realization of whole invention.The specific implementation thinking of this invention can be participated in the 6th page the 3rd section～the 5th section in instructions.Because 555 timers and d type flip flop all belong to device commonly used, so the cost of this scheme is low with respect to using bridge sheet or chip.But we think relative still more complicated this scheme.At first it has used two logical devices, also need set up a power control unit separately in addition.Thereby with the output of 555 timers output as d type flip flop input control d type flip flop, and the output of d type flip flop is as the input of power control unit.Cascade by these unit has finally realized the control to power supply.
Summary of the invention
The object of the present invention is to provide a kind of device of realizing realization system switching machine simple, with low cost.
For achieving the above object, a kind of device of system switching machine of realizing provided by the invention comprises: d type flip flop, the zero clearing position of this d type flip flop is connected to the seat in the plane for the treatment of to the main electricity of power devices by resistance, and this zero clearing position also links to each other with an electric capacity one end, this electric capacity other end ground connection; The zero clearing position of this d type flip flop also links to each other with switch, receives ground with another resistance string again, and the output terminal of this d type flip flop links to each other with main electricity, when main electricity with after AC power is communicated with, system realizes start; When the d type flip flop input end receives after high level signal and clock end receive the signal of rising edge, system realizes shutdown; When system was in off-mode and main electricity and is communicated with AC power, Closing Switch realized system boot.
We can find out clearly that its realization is comparatively simple from the design of this system switching machine, and cost is cheap relatively.
Description of drawings
Fig. 1 is the device that the embodiment of the invention one realizes the system switching machine;
Fig. 2 is the device that the embodiment of the invention two realizes the system switching machine.
Embodiment
Fig. 1 is a kind of embodiment of the present invention.Referring to Fig. 1, this realization system switching machine comprises d type flip flop and the circuit that is made of resistance, electric capacity and switch.The zero clearing position of described d type flip flop (/CLR) be connected to by resistance R 4 and treat seat in the plane (V to the main electricity 100 of power devices
DD_ SB), this zero clearing position also links to each other with capacitor C 2 one ends, C2 other end ground connection; This zero clearing position also links to each other with switch S 1, and S1 is concatenated into ground with resistance R 5 again.The carry-out bit of described d type flip flop (Q) directly links to each other with main electricity 100, is used for controlling the break-make of power supply to reach the switching on and shutting down of realization system.Here need to prove and have only when the output PS_ON of d type flip flop signal is low level that main electricity 100 just can be opened, when the output PS_ON of d type flip flop was high level, main electricity 100 was closed.
Describe this power control below in detail and be the startup and shutdown that how to realize main electricity is opened and cut off the system that realizes.
At first describe start process: main electricity is received on 220 volts/380 volts voltages by cable, and after the conducting, the seat in the plane output 5V direct supply for the treatment of of main electricity is given d type flip flop, makes d type flip flop in running order.In the moment of the firm conducting of main electricity, the zero clearing position of d type flip flop is a low level, and this time, d type flip flop was output as low level, thereby main electricity is opened system boot.Because main electricity is treated the 5V direct supply of seat in the plane output C2 is slowly charged, in this process, as long as the input end (D) and the clock bit (CLK) of this d type flip flop do not change, when the C2 charging finishes, the output of d type flip flop still is stabilized in low level, and system still is in open state.
Follow the descriptive system shutdown process: input end (D) the input high level signal of giving this d type flip flop, give the clock signal of a rising edge of clock bit (CLK) of this d type flip flop simultaneously, this time, the output terminal (Q) of this d type flip flop was exported high level signal, cut off main electricity, realized the shutdown of system.Generally can control the input and the clock signal of d type flip flop by CPU.If do not wish CPU send shutdown command after system shut down at once, then can add the RC charging network at the PS_ON output end, by regulating the parameter of resistance R and C, reach the purpose of delay switching-off.
System is in off-mode, but still conducting between main electricity and 220 volts/380 volts AC power, the process of starting shooting this time is: Closing Switch S1, C2 begins discharge, behind the certain hour this d type flip flop /CLR is a low level, the output terminal output low level of this d type flip flop like this, thus main electricity opened, realize system boot.
Fig. 2 is second embodiment of the present invention.Referring to Fig. 2, pull down resistor R1, a R2 have been connected respectively at the input end (D) and the CLK place of described d type flip flop.The purpose that pull down resistor here is set mainly is to keep the stable of system.Under being in off-mode in system, still conducting between main electricity and 220 volts/380 volts AC power, the V of main electricity
DD_ SB is output dc voltage still, this time is actual thinks that the maintenance system is in off-mode, but outside little interference makes the d type flip flop input end import a high level if having a bit, and clock bit has been imported a rising edge, and system has just started shooting like this.If be provided with pull down resistor R1 and R2,, also can not influence the state of system even outside interference occurred.
Be provided with pull down resistor R1 and the R2 except above-mentioned, second embodiment of the invention also is provided with three resistance R 6, R7 and R8 in parallel.The end of R6, R7, R8 links to each other other end ground connection with the end of the disconnected d type flip flop/CLR of R4.The purpose that these three parallel resistances are set here is to make the velocity of discharge of system to quicken.Be specially: when disconnecting being connected of main electricity and 220 volts/380 volts of alternating voltages, necessary wait V
DDThe loss of voltage of _ SB output, after the C2 discharge off, could again main electricity be communicated with 220 volts/380 volts alternating voltages, otherwise, can not realize starting shooting if after disconnecting being connected of main electricity and alternating voltage, again they are coupled together at once.Because, the time interval that disconnects between connecting is very little, C2 does not have discharge off probably, this time, d type flip flop did not also have zero clearing, do not have at d type flip flop under the situation of zero clearing, when again main electricity being communicated with 220 volts/380 volts alternating voltages, the PS_ON of main electricity can output low level, just can not realize system boot.If be provided with this three resistance, obviously the speed of discharge can be accelerated.It is a kind of giving an example that three parallel resistor are set certainly, and a resistance in parallel or two resistance etc. also are fine.In example here shown in Figure 2, concrete R1, the value of R2 are 1000 Europe, and the value of R6, R7, R8 is 150 Europe.In addition, the value of R4 is 1000 Europe, and the value of C2 is 1uF, and the value of R5 is 100 Europe, and the value of R3 is 4700 Europe, and C1 is 100nF.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of device of realizing the system switching machine, it is characterized in that this device comprises: d type flip flop, the zero clearing position of described d type flip flop is connected to the seat in the plane for the treatment of to the main electricity of power devices by resistance, this zero clearing position also links to each other with an electric capacity one end, this electric capacity other end ground connection; The zero clearing position of described d type flip flop also links to each other with switch, receives ground with another resistance string again, and the output terminal of described d type flip flop links to each other with main electricity, when main electricity with after AC power is communicated with, system realizes start; When the d type flip flop input end receives after high level signal and clock end receive the signal of rising edge, system realizes shutdown; When system was in off-mode and main electricity and is communicated with AC power, Closing Switch realized system boot.
2, the device of realization system switching machine as claimed in claim 1 is characterized in that, is respectively equipped with a drop-down resistance between the input end of described d type flip flop and clock end and the ground.
3, the device of realization system switching machine as claimed in claim 2 is characterized in that, is provided with pull down resistor between the zero clearing position of described d type flip flop and the ground.
4, the device of realization system switching machine as claimed in claim 3 is characterized in that, is provided with 3 pull down resistors in parallel between the zero clearing position of described d type flip flop and the ground.
5, the device of realization system switching machine as claimed in claim 4, it is characterized in that, the appearance value of described electric capacity is 1uF, the pull down resistor resistance that is provided with between d type flip flop input end and clock end and the ground is 1000 Europe, and the resistance of 3 resistance that get off of the parallel connection that is provided with between d type flip flop zero clearing position and the ground is 150 Europe.
6, the device of realization system switching machine as claimed in claim 1 is characterized in that, is provided with the RC charging network between d type flip flop output terminal and the main electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200058350U CN201348763Y (en) | 2009-02-09 | 2009-02-09 | Device for implementing system on/off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200058350U CN201348763Y (en) | 2009-02-09 | 2009-02-09 | Device for implementing system on/off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348763Y true CN201348763Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200058350U Expired - Lifetime CN201348763Y (en) | 2009-02-09 | 2009-02-09 | Device for implementing system on/off |
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| Country | Link |
|---|---|
| CN (1) | CN201348763Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223858A (en) * | 2014-06-13 | 2016-01-06 | 深圳市双赢伟业科技股份有限公司 | A kind of switching on and shutting down control circuit of electronic equipment |
| WO2020001479A1 (en) * | 2018-06-28 | 2020-01-02 | 南京中兴软件有限责任公司 | Startup circuit and terminal |
-
2009
- 2009-02-09 CN CNU2009200058350U patent/CN201348763Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223858A (en) * | 2014-06-13 | 2016-01-06 | 深圳市双赢伟业科技股份有限公司 | A kind of switching on and shutting down control circuit of electronic equipment |
| WO2020001479A1 (en) * | 2018-06-28 | 2020-01-02 | 南京中兴软件有限责任公司 | Startup circuit and terminal |
| CN110661517A (en) * | 2018-06-28 | 2020-01-07 | 中兴通讯股份有限公司 | Starting-up circuit and terminal thereof |
| CN110661517B (en) * | 2018-06-28 | 2022-09-30 | 中兴通讯股份有限公司 | Starting-up circuit and terminal thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
|
| CX01 | Expiry of patent term |