CN204347706U - 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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- CN204347706U CN204347706U CN201520044574.9U CN201520044574U CN204347706U CN 204347706 U CN204347706 U CN 204347706U CN 201520044574 U CN201520044574 U CN 201520044574U CN 204347706 U CN204347706 U CN 204347706U
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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 comprises switch S 1, single phase bridge type rectifier circu UR, power cut off delay time relay K1, bidirectional thyristor VTH, CD4541 timer chip, resistance R1, resistance R2, resistance R3, resistance R4, slide rheostat RP, electrochemical capacitor C1, electric capacity C2, voltage stabilizing diode VS and not gate D1; 220V AC power exports direct supply through bridge rectifier circuit UR and provides working power for CD4541; Switch S 1 closes, and power cut off delay time relay K1 obtains electric, peripheral hardware first electric; Obtain electric after main frame time delay; Switch S 1 disconnects, then bidirectional thyristor VTH dead electricity cut-off, main frame momentary power failure, the time delay of power cut off delay time relay K1 dead electricity disconnects its switch, power-off after 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 switch S 1, single phase bridge type rectifier circu UR, power cut off delay time relay K1, bidirectional thyristor VTH, CD4541 timer chip, resistance R1, resistance R2, resistance R3, resistance R4, slide rheostat RP, electrochemical capacitor C1, electric capacity C2, voltage stabilizing diode VS and not gate D1;
One end one end of connecting valve S1 and power supply terminal of peripheral hardware simultaneously of 220V AC power, the other end of switch S 1 connects a power supply terminal of main frame and an ac input end of single phase bridge type rectifier circu UR simultaneously;
The other end of 220V AC power connects one end of power cut off delay time relay K1 time delay normally opened contact, one end of bidirectional thyristor VTH and another ac input end of single phase bridge type rectifier circu UR; The other end of power cut off delay time relay K1 time delay normally opened contact connects another power supply terminal of peripheral hardware; The other end of bidirectional thyristor VTH connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects the positive pole of one end of power cut off delay time relay K1 coil, 14 pin of CD4541 timer chip, one end of resistance R1 and electrochemical capacitor C1 simultaneously;
12 pin of CD4541 timer chip connect 9 pin, 13 pin, the other end of resistance R1 and the negative electrode of voltage stabilizing diode VS simultaneously; One end of 1 pin contact resistance R2 of CD4541 timer chip, 2 pin of CD4541 timer chip connect one end of electric capacity C2, one end of 3 pin contact resistance R3 of CD4541 timer chip, the other end of resistance R3 connects a stiff end of slide rheostat RP, and the other end of resistance R2 connects the other end of electric capacity C2, another stiff end of slide rheostat RP and movable end thereof simultaneously;
One end of 8 pin contact resistance R4 of CD4541 timer chip, the other end of resistance R4 connects the input end of not gate D1, and the output terminal of not gate D1 connects the control pole of bidirectional thyristor VTH;
The negative power supply output terminal of single phase bridge type rectifier circu UR connects the other end of power cut off delay time relay K1 coil, 5 pin of CD4541 timer chip, 6 pin, 7 pin, 10 pin, the anode of voltage stabilizing diode VS and the negative pole of electric capacity C1 simultaneously, and ground connection.
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 circuit diagram 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 switch S 1, single phase bridge type rectifier circu UR, power cut off delay time relay K1, bidirectional thyristor VTH, CD4541 timer chip, resistance R1, resistance R2, resistance R3, resistance R4, slide rheostat RP, electrochemical capacitor C1, electric capacity C2, voltage stabilizing diode VS and not gate D1;
One end one end of connecting valve S1 and power supply terminal of peripheral hardware simultaneously of 220V AC power, the other end of switch S 1 connects a power supply terminal of main frame and an ac input end of single phase bridge type rectifier circu UR simultaneously;
The other end of 220V AC power connects one end of power cut off delay time relay K1 time delay normally opened contact, one end of bidirectional thyristor VTH and another ac input end of single phase bridge type rectifier circu UR; The other end of power cut off delay time relay K1 time delay normally opened contact connects another power supply terminal of peripheral hardware; The other end of bidirectional thyristor VTH connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects the positive pole of one end of power cut off delay time relay K1 coil, 14 pin of CD4541 timer chip, one end of resistance R1 and electrochemical capacitor C1 simultaneously;
12 pin of CD4541 timer chip connect 9 pin, 13 pin, the other end of resistance R1 and the negative electrode of voltage stabilizing diode VS simultaneously; One end of 1 pin contact resistance R2 of CD4541 timer chip, 2 pin of CD4541 timer chip connect one end of electric capacity C2, one end of 3 pin contact resistance R3 of CD4541 timer chip, the other end of resistance R3 connects a stiff end of slide rheostat RP, and the other end of resistance R2 connects the other end of electric capacity C2, another stiff end of slide rheostat RP and movable end thereof simultaneously;
One end of 8 pin contact resistance R4 of CD4541 timer chip, the other end of resistance R4 connects the input end of not gate D1, and the output terminal of not gate D1 connects the control pole of bidirectional thyristor VTH;
The negative power supply output terminal of single phase bridge type rectifier circu UR connects the other end of power cut off delay time relay K1 coil, 5 pin of CD4541 timer chip, 6 pin, 7 pin, 10 pin, the anode of voltage stabilizing diode VS and the negative pole of electric capacity C1 simultaneously, and ground connection.
The principle of work of the power cut off delay time relay: the power cut off delay time relay has time delay normally opened contact, time delay normally closed contact; Coil obtains electric, and its time delay normally opened contact is instantaneous closed, the instantaneous disconnection of its time delay normally closed contact; During coil losing electricity, its time delay normally opened contact delay recovery off-state, its time delay normally closed contact delay recovery closure state.
Principle of work:
During start, 220V AC rectification is exported+12V direct supply, for CD4541 provides working power by Closing Switch S1, single phase bridge type rectifier circu UR.Meanwhile, power cut off delay time relay K1 coil obtains electric, and its time delay normally opened contact is instantaneous closed, peripheral hardware first electric.
9 pin of CD4541 connect high level power supply, and 8 pin export high level, output low level after not gate D1 is anti-phase, and the control pole of VTH connects low level, is not triggered; Meanwhile, electric capacity C1 starts charging, and CD4541 carries out time status, and after the time arrives, its 8 pin output low level, trigger VTH conducting for high level through not gate D1 is anti-phase, main frame obtains electric.When achieving start, establish first, after open the sequential control of main frame.
By the time regulating RP to regulate CD4541 time delay output low level signal.
During shutdown, cut-off switch S1, bidirectional thyristor VTH transfers cut-off state to immediately because of power-off, main frame momentary power failure.
After cut-off switch S1, power cut off delay time relay K1 coil losing electricity, its time delay normally opened contact time delay being in closure state disconnects, and peripheral hardware, through just power-off after a period of time, when achieving shutdown, first closes main frame, the sequential control of rear pass peripheral hardware.
Claims (2)
1. main frame and peripheral hardware switching sequence control device, it is characterized in that, it comprises switch S 1, single phase bridge type rectifier circu UR, power cut off delay time relay K1, bidirectional thyristor VTH, CD4541 timer chip, resistance R1, resistance R2, resistance R3, resistance R4, slide rheostat RP, electrochemical capacitor C1, electric capacity C2, voltage stabilizing diode VS and not gate D1;
One end one end of connecting valve S1 and power supply terminal of peripheral hardware simultaneously of 220V AC power, the other end of switch S 1 connects a power supply terminal of main frame and an ac input end of single phase bridge type rectifier circu UR simultaneously;
The other end of 220V AC power connects one end of power cut off delay time relay K1 time delay normally opened contact, one end of bidirectional thyristor VTH and another ac input end of single phase bridge type rectifier circu UR; The other end of power cut off delay time relay K1 time delay normally opened contact connects another power supply terminal of peripheral hardware; The other end of bidirectional thyristor VTH connects another power supply terminal of main frame;
The cathode power supply output terminal of single phase bridge type rectifier circu UR connects the positive pole of one end of power cut off delay time relay K1 coil, 14 pin of CD4541 timer chip, one end of resistance R1 and electrochemical capacitor C1 simultaneously;
12 pin of CD4541 timer chip connect 9 pin, 13 pin, the other end of resistance R1 and the negative electrode of voltage stabilizing diode VS simultaneously; One end of 1 pin contact resistance R2 of CD4541 timer chip, 2 pin of CD4541 timer chip connect one end of electric capacity C2, one end of 3 pin contact resistance R3 of CD4541 timer chip, the other end of resistance R3 connects a stiff end of slide rheostat RP, and the other end of resistance R2 connects the other end of electric capacity C2, another stiff end of slide rheostat RP and movable end thereof simultaneously;
One end of 8 pin contact resistance R4 of CD4541 timer chip, the other end of resistance R4 connects the input end of not gate D1, and the output terminal of not gate D1 connects the control pole of bidirectional thyristor VTH;
The negative power supply output terminal of single phase bridge type rectifier circu UR connects the other end of power cut off delay time relay K1 coil, 5 pin of CD4541 timer chip, 6 pin, 7 pin, 10 pin, the anode of voltage stabilizing diode VS and the negative pole of electric capacity C1 simultaneously, and ground connection.
2. main frame and peripheral hardware switching sequence control device according to claim 1, is characterized in that, single phase bridge type rectifier circu UR is the bridge rectifier circuit that four diodes are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044574.9U CN204347706U (en) | 2015-01-22 | 2015-01-22 | Main frame and peripheral hardware switching sequence control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044574.9U CN204347706U (en) | 2015-01-22 | 2015-01-22 | Main frame and peripheral hardware switching sequence control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204347706U true CN204347706U (en) | 2015-05-20 |
Family
ID=53230964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520044574.9U Expired - Fee Related CN204347706U (en) | 2015-01-22 | 2015-01-22 | Main frame and peripheral hardware switching sequence control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204347706U (en) |
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2015
- 2015-01-22 CN CN201520044574.9U patent/CN204347706U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20170122 |