CN204087099U - Main frame and peripheral hardware switching sequence control device - Google Patents
Main frame and peripheral hardware switching sequence control device Download PDFInfo
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- CN204087099U CN204087099U CN201420531768.7U CN201420531768U CN204087099U CN 204087099 U CN204087099 U CN 204087099U CN 201420531768 U CN201420531768 U CN 201420531768U CN 204087099 U CN204087099 U CN 204087099U
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Abstract
Main frame and peripheral hardware switching sequence control device, belong to computer realm, and the utility model is for solution main frame and peripheral hardware switching on and shutting down order are by the insecure problem of manual control.The utility model it comprise two grades of selector switch S, NE556 time-base integrated circuit, single phase bridge type rectifier circu UR, 7805 voltage stabilizing chips, auxiliary reclay K1, K2, resistance R1 ~ R4, electric capacity C1 ~ C6, diode D1 and D2; NE556 and peripheral electron element form two monostable volt circuits, and two output terminals export the time point difference of low and high level because trigger voltage due in is different; During start, two grades of selector switch S are placed in 1 gear, peripheral hardware first electric, after main frame electric; During shutdown, two grades of selector switch S are placed in 2 gears, first close main frame, rear pass peripheral hardware.
Description
Technical field
The utility model relates to main frame and peripheral hardware switching sequence control device, belongs to computer realm.
Background technology
The main frame of computing machine and the start of peripheral hardware, shutdown order have strict demand, when starting shooting, establish first, after drive main frame; When shutting down, first close main frame, rear pass peripheral hardware.Peripheral hardware comprises the equipment such as display, printer.If order is got wrong, the dash current the lighter produced during open and close machine causes loss of data, and severe one can cause damaging main frame.And people may not necessarily strictly observe these rules at ordinary times, computing machine is caused to suffer damage.
Summary of the invention
The utility model object be in order to solve main frame and peripheral hardware switching on and shutting down order unreliable by manual control, the problem that computing machine can be caused to suffer damage, provides a kind of main frame and peripheral hardware switching sequence control device.
Main frame described in the utility model and peripheral hardware switching sequence control device, it comprises two grades of selector switch S, NE556 time-base integrated circuit, single phase bridge type rectifier circu UR, 7805 voltage stabilizing chips, auxiliary reclay K1, auxiliary reclay K2, resistance R1, resistance R2, resistance R3, resistance R4, electrochemical capacitor C1, electric capacity C2, electric capacity C3, electrochemical capacitor C4, electric capacity C5, electrochemical capacitor C6, diode D1 and diode D2;
One end of 220V AC power connects an ac input end of a power supply terminal of peripheral hardware, a power supply terminal of main frame and single phase bridge type rectifier circu UR simultaneously; The other end of 220V AC power connects one end of auxiliary reclay K1 normally opened contact, one end of auxiliary reclay K2 normally opened contact and another ac input end of single phase bridge type rectifier circu UR simultaneously; The other end of auxiliary reclay K1 normally opened contact connects another power supply terminal of peripheral hardware; The other end of auxiliary reclay K2 normally opened contact connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects 1 pin of 7805 voltage stabilizing chips, 3 pin of 7805 voltage stabilizing chips connect the positive pole of electrochemical capacitor C6, and the negative power supply output terminal exporting direct supply Vcc single phase bridge type rectifier circu UR connects 2 pin of 7805 voltage stabilizing chips and the negative pole of electrochemical capacitor C6 simultaneously, and ground connection;
6 pin of NE556 time-base integrated circuit connect the positive pole of 1 pin, 2 pin, one end of resistance R1, one end of resistance R2 and electrochemical capacitor C1 simultaneously; The other end of resistance R1 connects the negative electrode of diode D1, and the other end of resistance R2 connects the anode of diode D2; 12 pin of NE556 time-base integrated circuit connect 13 pin, the positive pole of electrochemical capacitor C4 and one end of resistance R3 simultaneously; 8 pin of NE556 time-base integrated circuit connect one end of electric capacity C5 and one end of resistance R4 simultaneously;
The common point of 14 pin of the other end of resistance R4, the other end of resistance R3, NE556 time-base integrated circuit, 10 pin, 4 pin, the negative electrode of diode D2, the anode of diode D1 and two grades of selector switch S; 1 gear of two grades of selector switch S connects direct supply Vcc; 2 gears of two grades of selector switch S connect one end of the negative pole of electrochemical capacitor C1, one end of electric capacity C2,7 pin of NE556 time-base integrated circuit, one end of electric capacity C3, the negative pole of electrochemical capacitor C4, one end of auxiliary reclay K1 coil and auxiliary reclay K2 coil simultaneously, and ground connection;
The other end of electric capacity C2 connects 3 pin of NE556 time-base integrated circuit; The other end of electric capacity C3 connects 11 pin of NE556 time-base integrated circuit; The other end of auxiliary reclay K1 coil connects the other end of electric capacity C5 and 5 pin of NE556 time-base integrated circuit simultaneously; The other end of auxiliary reclay K2 coil connects 9 pin of NE556 time-base integrated circuit.
Advantage of the present utility model: main frame described in the utility model and peripheral hardware switching sequence control device structure are simple, when easily realizing start, establishes first, after drive main frame; During shutdown, first close main frame, the order of rear pass peripheral hardware, the safety of effective protected host.
Accompanying drawing explanation
Fig. 1 is the structural representation of main frame described in the utility model and peripheral hardware switching sequence control device.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, main frame described in present embodiment and peripheral hardware switching sequence control device, it comprises two grades of selector switch S, NE556 time-base integrated circuit, single phase bridge type rectifier circu UR, 7805 voltage stabilizing chips, auxiliary reclay K1, auxiliary reclay K2, resistance R1, resistance R2, resistance R3, resistance R4, electrochemical capacitor C1, electric capacity C2, electric capacity C3, electrochemical capacitor C4, electric capacity C5, electrochemical capacitor C6, diode D1 and diode D2;
One end of 220V AC power connects an ac input end of a power supply terminal of peripheral hardware, a power supply terminal of main frame and single phase bridge type rectifier circu UR simultaneously; The other end of 220V AC power connects one end of auxiliary reclay K1 normally opened contact, one end of auxiliary reclay K2 normally opened contact and another ac input end of single phase bridge type rectifier circu UR simultaneously; The other end of auxiliary reclay K1 normally opened contact connects another power supply terminal of peripheral hardware; The other end of auxiliary reclay K2 normally opened contact connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects 1 pin of 7805 voltage stabilizing chips, and 3 pin of 7805 voltage stabilizing chips connect the positive pole of electrochemical capacitor C6, and export direct supply Vcc; The negative power supply output terminal of single phase bridge type rectifier circu UR connects 2 pin of 7805 voltage stabilizing chips and the negative pole of electrochemical capacitor C6 simultaneously, and ground connection;
6 pin of NE556 time-base integrated circuit connect the positive pole of 1 pin, 2 pin, one end of resistance R1, one end of resistance R2 and electrochemical capacitor C1 simultaneously; The other end of resistance R1 connects the negative electrode of diode D1, and the other end of resistance R2 connects the anode of diode D2; 12 pin of NE556 time-base integrated circuit connect 13 pin, the positive pole of electrochemical capacitor C4 and one end of resistance R3 simultaneously; 8 pin of NE556 time-base integrated circuit connect one end of electric capacity C5 and one end of resistance R4 simultaneously;
The common point of 14 pin of the other end of resistance R4, the other end of resistance R3, NE556 time-base integrated circuit, 10 pin, 4 pin, the negative electrode of diode D2, the anode of diode D1 and two grades of selector switch S; 1 gear of two grades of selector switch S connects direct supply Vcc; 2 gears of two grades of selector switch S connect one end of the negative pole of electrochemical capacitor C1, one end of electric capacity C2,7 pin of NE556 time-base integrated circuit, one end of electric capacity C3, the negative pole of electrochemical capacitor C4, one end of auxiliary reclay K1 coil and auxiliary reclay K2 coil simultaneously, and ground connection;
The other end of electric capacity C2 connects 3 pin of NE556 time-base integrated circuit; The other end of electric capacity C3 connects 11 pin of NE556 time-base integrated circuit; The other end of auxiliary reclay K1 coil connects the other end of electric capacity C5 and 5 pin of NE556 time-base integrated circuit simultaneously; The other end of auxiliary reclay K2 coil connects 9 pin of NE556 time-base integrated circuit.
Single phase bridge type rectifier circu UR is the rectification circuit be made up of four diodes.220V alternating current is transformed into direct supply, and after 7805 voltage stabilizing chip voltage stabilizings, exports direct supply Vcc, for NE556 provides working power.
There is relational expression R
1c
2< R
3c
4< R
2c
2, wherein, R
1for the resistance of resistance R1, R
2for the resistance of resistance R2, C
2for the capacitance of electric capacity C2, R
3for the resistance of resistance R3, C
4for the capacitance of electrochemical capacitor C4.
Principle of work:
During start, two grades of selector switch S are placed in 1 gear, have two monostable circuits in circuit, wherein 5 pin output times depend on that direct supply Vcc is the time of C1 charging through D1 and R1, and the time that corresponding triggering pin 6 pin is charged to 1/3 (i.e. trigger voltage) of operating voltage is 1.1R
1c
2; Another road 9 pin exports and depends on that direct supply Vcc warp and R3 are the time of C4 charging, and the time that corresponding triggering pin 8 pin is charged to 1/3 (i.e. trigger voltage) of operating voltage is 1.1R
3c
4; Because there is relational expression R
1c
2< R
3c
4the time that the time that then 6 pin reach trigger voltage reaches trigger voltage than 8 pin wants Zao, namely, the time that the time that 5 pin export high level exports high level than 8 pin wants Zao, namely K1 coil than K2 coil first electric, K1 normally opened contact first closes, peripheral hardware first electric, closed after K2 normally opened contact, obtain electric after main frame.When realizing during start, peripheral hardware first electric, must electric control sequence after main frame.
During shutdown, two grades of selector switch S are placed in 2 gears, C1 is by R2, D2 electric discharge, and C4 is discharged by R3, and the velocity of discharge is according to relational expression R
3c
4< R
2c
2known, the velocity of discharge of C4 is fast, and a 8 pin step more Zao than 6 pin arrives resetting voltage, i.e. a 9 pin step output low level more Zao than 5 pin, corresponding, the first power-off of K2 coil, the first power-off of main frame; Power-off after K1 coil, power-off after peripheral hardware, therefore, when achieving shutdown, first closes main frame, the control sequence of rear pass peripheral hardware.
Claims (3)
1. main frame and peripheral hardware switching sequence control device, it is characterized in that, it comprises two grades of selector switch S, NE556 time-base integrated circuit, single phase bridge type rectifier circu UR, 7805 voltage stabilizing chips, auxiliary reclay K1, auxiliary reclay K2, resistance R1, resistance R2, resistance R3, resistance R4, electrochemical capacitor C1, electric capacity C2, electric capacity C3, electrochemical capacitor C4, electric capacity C5, electrochemical capacitor C6, diode D1 and diode D2;
One end of 220V AC power connects an ac input end of a power supply terminal of peripheral hardware, a power supply terminal of main frame and single phase bridge type rectifier circu UR simultaneously; The other end of 220V AC power connects one end of auxiliary reclay K1 normally opened contact, one end of auxiliary reclay K2 normally opened contact and another ac input end of single phase bridge type rectifier circu UR simultaneously; The other end of auxiliary reclay K1 normally opened contact connects another power supply terminal of peripheral hardware; The other end of auxiliary reclay K2 normally opened contact connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects 1 pin of 7805 voltage stabilizing chips, and 3 pin of 7805 voltage stabilizing chips connect the positive pole of electrochemical capacitor C6, and export direct supply Vcc; The negative power supply output terminal of single phase bridge type rectifier circu UR connects 2 pin of 7805 voltage stabilizing chips and the negative pole of electrochemical capacitor C6 simultaneously, and ground connection;
6 pin of NE556 time-base integrated circuit connect the positive pole of 1 pin, 2 pin, one end of resistance R1, one end of resistance R2 and electrochemical capacitor C1 simultaneously; The other end of resistance R1 connects the negative electrode of diode D1, and the other end of resistance R2 connects the anode of diode D2; 12 pin of NE556 time-base integrated circuit connect 13 pin, the positive pole of electrochemical capacitor C4 and one end of resistance R3 simultaneously; 8 pin of NE556 time-base integrated circuit connect one end of electric capacity C5 and one end of resistance R4 simultaneously;
The common point of 14 pin of the other end of resistance R4, the other end of resistance R3, NE556 time-base integrated circuit, 10 pin, 4 pin, the negative electrode of diode D2, the anode of diode D1 and two grades of selector switch S; 1 gear of two grades of selector switch S connects direct supply Vcc; 2 gears of two grades of selector switch S connect one end of the negative pole of electrochemical capacitor C1, one end of electric capacity C2,7 pin of NE556 time-base integrated circuit, one end of electric capacity C3, the negative pole of electrochemical capacitor C4, one end of auxiliary reclay K1 coil and auxiliary reclay K2 coil simultaneously, and ground connection;
The other end of electric capacity C2 connects 3 pin of NE556 time-base integrated circuit; The other end of electric capacity C3 connects 11 pin of NE556 time-base integrated circuit; The other end of auxiliary reclay K1 coil connects the other end of electric capacity C5 and 5 pin of NE556 time-base integrated circuit simultaneously; The other end of auxiliary reclay K2 coil connects 9 pin of NE556 time-base integrated circuit.
2. main frame and peripheral hardware switching sequence control device according to claim 1, it is characterized in that, single phase bridge type rectifier circu UR is the rectification circuit be made up of four diodes.
3. main frame and peripheral hardware switching sequence control device according to claim 1, is characterized in that, R
1c
2< R
3c
4< R
2c
2, wherein, R
1for the resistance of resistance R1, R
2for the resistance of resistance R2, C
2for the capacitance of electric capacity C2, R
3for the resistance of resistance R3, C
4for the capacitance of electrochemical capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531768.7U CN204087099U (en) | 2014-09-17 | 2014-09-17 | Main frame and peripheral hardware switching sequence control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531768.7U CN204087099U (en) | 2014-09-17 | 2014-09-17 | Main frame and peripheral hardware switching sequence control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087099U true CN204087099U (en) | 2015-01-07 |
Family
ID=52179792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531768.7U Expired - Fee Related CN204087099U (en) | 2014-09-17 | 2014-09-17 | Main frame and peripheral hardware switching sequence control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796122A (en) * | 2015-04-20 | 2015-07-22 | 河南黄淮学院建设工程有限责任公司 | Novel automatic gear delay switch for building construction |
-
2014
- 2014-09-17 CN CN201420531768.7U patent/CN204087099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796122A (en) * | 2015-04-20 | 2015-07-22 | 河南黄淮学院建设工程有限责任公司 | Novel automatic gear delay switch for building construction |
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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: 20150107 Termination date: 20150917 |
|
| EXPY | Termination of patent right or utility model |