CN2273027Y - Automatic sequential switch for microcomputer power - Google Patents

Automatic sequential switch for microcomputer power Download PDF

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Publication number
CN2273027Y
CN2273027Y CN 96237377 CN96237377U CN2273027Y CN 2273027 Y CN2273027 Y CN 2273027Y CN 96237377 CN96237377 CN 96237377 CN 96237377 U CN96237377 U CN 96237377U CN 2273027 Y CN2273027 Y CN 2273027Y
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China
Prior art keywords
supply socket
power supply
relay
power
termination
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Expired - Fee Related
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CN 96237377
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Chinese (zh)
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陆绍忠
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Individual
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Individual
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Abstract

The utility model relates to an automatic sequential switch for microcomputer power, which comprises a two-gang power button, a host machine supply socket, a display supply socket, a printer supply socket, a commutation filtering circuit and a delay circuit. The utility model is characterized in that a transistor BG< 1 > and a relay J1< 1 > control the former switching on or the later switching off of the display supply socket and the printer supply socket, and another transistor BG< 2 > and another relay J2< 2 > control the later switching on or the former switching off of the host machine supply socket. The utility model realizes the purposes that during the starting of a microcomputer, peripheral devices are switched on first, and a host machine is switched on later; during the shut down of a microcomputer, a host machine is switched off first, and peripheral devices are switched off later. The utility model avoids the influence on a host machines owing to the unordered switching of a microcomputer, and prolongs the service life of a host machine.

Description

Computer power automatic sequence switch
The utility model relates to a kind of switch, especially a kind of computer power automatic sequence switch.
Use microcomputer when start, connect equipment over all being strict with earlier, as display, printer etc., after drive main frame, after shutdown the time then requires to close main frame earlier, close external equipment, this mainly is to damage main frame for fear of producing dash current when the open and close external equipment, but sometimes because operating personnel's inadvertent or not in operation sequence, confused order just may cause main frame to be burnt out or loss of data, cause artificial damage, bring unnecessary loss; A lot of people are arranged now in order to save trouble, the attaching plug of display is inserted in the supply socket of host power supply case, and the power switch of display is placed the ON position, only control the Push And Release of display by the power switch of main frame, display and main frame are switched on simultaneously, equally can form dash current, have the possibility of damaging main frame.
The purpose of this utility model is to provide a kind of computer power automatic sequence switch, connects display and printer power supply during start earlier, and host power supply is connected in the back, disconnects host power supply when shutdown earlier, and the back disconnects display and printer power supply.
The utility model is to realize above-mentioned purpose like this: on computer power automatic sequence switch, duplex power knob, current rectifying and wave filtering circuit, host power supply socket, printer and display power supply socket are set, BG 1Base stage connect the first output terminal of delay circuit signal, BG 2Base stage connect the hysteresis output terminal of delay circuit signal, BG 1And BG 2Emitter or the collector negative pole that connects the direct supply behind the rectifying and wave-filtering, triode BG 1Collector or emitter and relay J 1Terminals connect relay J 1Another wiring termination rectifying and wave-filtering after the negative pole of direct supply, relay J 1Two normally opened contact J are arranged 1-1And J 1-2, normally opened contact J 1-1K with the duplex power knob 1After the parallel connection, a termination printer power supply socket X 2With display power supply socket X 1Zero line side, another termination AC power zero line, normally opened contact J 1-2One termination printer power supply socket X 2With display power supply socket X 1The live wire end, the live wire of another termination AC power; Triode BG 2Collector or emitter and relay J 2Terminals connect relay J 2Two normally opened contact J are arranged 2-1And J 2-2, normally opened contact J 2-1The zero line side of a termination host power supply socket X3, the other end and printer power supply socket X 2With display power supply socket X 1The zero line side parallel connection, normally opened contact J 2-2A termination host power supply socket X 3The live wire end, another termination AC power live wire.Closed power knob when using microcomputer, delay circuit makes triode BG 1And relay J 1Control printer and display power supply socket elder generation energized, another triode BG 2And relay J 2Main control system supply socket hysteresis energized, when closing microcomputer, deenergization button, delay circuit make triode BG 2And relay J 2The main control system supply socket is outage earlier, triode BG 1And relay J 1Cut off the power supply behind control printer and the display power supply socket.
Because the utility model adopts triode in the control circuit and supply socket energising earlier when start of relay control printer and display, cut off the power supply after when shutdown; And another triode and the supply socket of relay main control system were switched on after than printer and display power supply socket in when start, then outage earlier when shutdown, so just avoided the possibility of damage or impact main frame not according to the running program operation of microcomputer energized, and the utility model only needs just can realize that by a power knob order by working specification of computer power automatically is switched on or switched off, and has alleviated labor intensity of operating personnel.
Below in conjunction with accompanying drawing the utility model is done concrete detailed description the in detail.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is first kind of circuit theory diagrams of the present utility model;
Fig. 3 is second kind of circuit theory diagrams of the present utility model;
Fig. 4 is the 4th kind of circuit theory diagrams of the utility model craftsman.
With reference to Fig. 1, the utility model is made up of ac power supply circuit, current rectifying and wave filtering circuit, delay circuit control circuit and AC power output circuit.
With reference to Fig. 2, the live wire of fuse F one termination input ac power, an end, light emitting diode D that the other end and power transformer BT are elementary 9Negative pole, diode D 12Positive pole link; D 9Positive pole, D 12Negative pole and capacitor C 7An end connect capacitor C 7The live wire of another termination input ac power.Another relay termination J that power transformer BT is elementary 1Pair of contact J 1-1An end, J 1-1The other end with the input power supply zero line link.Button K 1Two ends and relay J 1Normally opened contact J 1-1The two ends parallel connection;
By diode D 1, D 2, D 3, D 4Be connected into bridge rectifier circuit, two different name end connects the secondary two ends of power transformer BT respectively; D 1, D 3Negative pole output positive potential and C 1Positive pole, regulator block IC 1Input end, relay J 1, J 2An end link; D 2, D 4Positive pole output negative potential and C 1Negative pole, IC 1Earth terminal, capacitor C 2Negative pole connect IC 1Output terminal and C 2Positive pole, button K 2An end link, in capacitor C 2Two ends output direct current 12V voltage.
Resistance R 1An end and K 12The other end and diode D 13Connect with positive pole; R 1The other end and R 2And C 3Positive pole connect; R 2Another termination triode BG 1Base stage.J 1The other end and BG 1Collector and D 5Positive pole connect; D 5Negative pole and J 1The other end connect.R 3A termination D 13Negative pole, the other end and C 4Positive pole and R 4An end connect R 4Another termination triode BG 2Base stage.J 2The other end and BG 2Collector and D 6Positive pole link D 6Negative pole and J 2The other end connect.BG 1, BG 2Emitter and C 2, C 3, C 4, negative pole link.
X 1Be display power supply socket, X 2Be printer power supply socket, X 3Be host power supply socket, J 1-1Be relay J 1One group of normally opened contact, J 1-2Be J 1Another the group normally opened contact, J 2-1, J 2-2Be relay J 2Two groups of normally opened contacts.X 1With X 2Be in parallel.X 1An end and J 1-1The end and the D that join with primary 7Negative pole, D 10Positive pole, J 2-1An end link; The other end and C 5, J 1-2An end connect.C 5The other end and D 7Positive pole, D 10Negative pole connect.J 2-1The other end and X 3, D 8Negative pole and D 11Positive pole connect; X 3The other end and J 2-2And C 6Connect; C 6The other end and D 8Positive pole, D 11Negative pole connect.J 2-2The other end and J 1-2The other end and D 12Positive pole link.
With reference to Fig. 3, the live wire of fuse F one termination input power supply, utmost point pipe D in the other end and the rectification 21Positive pole and light emitting diode D 9Negative pole link; D 9Positive pole and R 8An end link R 8The other end with the input power supply live wire link.The input power supply zero line should with J 1-1Connect J 1-1The other end and dropping resistor R 6Connect.Duplex control knob K 1Two ends and J 1-1The two ends parallel connection.
Dropping resistor R 6The other end and voltage stabilizing diode D 22Positive pole, capacitor C 19Negative pole and R 23An end connect.R 7An end and D 21Negative pole connect the other end and D 22Negative pole, C 19Positive pole and R 23The other end connect.At C 19The two ends output dc voltage.
Resistance R 1An end and K 2An end and D 13Positive pole connect resistance R 1The other end and R 20, C 3Positive pole, triode BG 1Base stage link.Relay J 1An end and D 5Positive pole, BG 1Collector connect the other end and D 5Negative pole, D 6Negative pole, J 2An end connect.R 3A termination D 13Negative pole, the other end and R 21, C 4Positive pole and BG 2Base stage connect.J 2The other end and D 6Positive pole and BG 2Collector connect.BG 1, BG 2Emitter and C 3, C 4Negative pole and R 20, R 21The other end link.
Display power supply socket X 1With printer power supply socket X 2After being in parallel, wherein an end and J 1-1And R 6Contact and D 7Negative pole, D 10Positive pole, J 2-1An end link; The other end and C 5And J 1-2Link.C 5The other end and D 7Positive pole and D 10Negative pole connect.J 2-1The other end and host power supply socket X 3, D 8Negative pole, D 11Positive pole link X 3The other end and C 6And J 2-2Connect C 6The other end and D 8Positive pole, D 11Negative pole connect.J 2-2The other end and J 1-2Other end parallel connection after and D 21Positive pole link.
With reference to Fig. 4, the live wire of fuse F one termination input power supply, an end, D that the other end and power transformer BT are elementary 9Negative pole, D 12Positive pole link; D 9Positive pole, D 12Negative pole and C 7Connect C 7The live wire of another termination input power supply.Another termination J that power transformer BT is elementary 1-1, J 1-1The other end with the input power supply zero line join.Button K 1Two ends and J 1-1The two ends parallel connection.
By D 1, D 2, D 3, D 4Be connected into bridge rectifier circuit, two different name end connects the secondary two ends of power transformer BT respectively; D 1And D 3Negative pole meet filter capacitor C 1Positive pole, D 2And D 4Positive pole meet C 1Negative pole.At C 1The two ends output dc voltage.
IC 2Be the CMOS integrated package, model is IC4011, C 1Positive pole and R 25, R 24, IC 2The 8th, 13,14 pin and J 1, J 2And D 9, D 10Negative pole link; C 1Negative pole and triode BG 1, BG 2Collector and IC 2The 7th pin, C 27, C 26Negative pole and K 2Stiff end connect ground connection together.K 2Movable end and R 25The other end, IC 2The 1st pin connect; K 2Another one movable end and R 24The other end, IC 2The 6th pin connect.IC 2The 2nd, 4 pin and D 25, D 28Negative pole and D 27, D 26Positive pole link.D 25Positive pole and R 26Join R 26The other end and D 27Negative pole, C 26Positive pole and IC 2The 12nd pin connect.D 26Negative pole and R 27Join R 27The other end and D 28Positive pole, C 27Positive pole and IC 2The 9th pin connect.BG 1Base stage and IC 2The 11st pin join its emitter and J 1The other end and D 5Positive pole connect.BG 2Base stage and IC 2The 10th pin join its emitter and J 2The other end and D 6Positive pole connect.IC 2The 3rd pin and 5 pin be linked together.
Display power supply socket X 1With printer power supply socket X 2Be in parallel.Wherein an end and J 1-1With an elementary end and the D that joins of transformer BT 7Negative pole, D 10Positive pole and J 2-1An end connect; The other end and C 5, J 1-2An end connect.C 5The other end and D 7Positive pole, D 10Negative pole connect.J 2-1The other end and main frame electric current socket X 3, D 8The utmost point and D 11Positive pole connect; X 3The other end and J 2-2And C 6Link; C 6The other end and D 8Positive pole and D 11Negative pole connect.J 2-2The other end and J 1-2The other end and D 12Positive pole link.
With reference to Fig. 2, as energized button K 1After, the 220V AC power is through transformer BT step-down, D 1-D 4Obtain the 15V DC voltage after the rectification, the one road supply with relay J then 1And J 2, another road is through IC 1Stable+12V the DC voltage of output after the voltage stabilizing.K 1Open back K 2Also open simultaneously ,+12V voltage passes through K 2Through R 1To C 3Rapid charge is simultaneously through D 13, R 3To C 4Do slowly charging; C 3The very fast end of charging process, its positive voltage passes through R 2Be added to BG very soon 1Base stage, BG 1Conducting immediately, J 1Get electric adhesive, the 220V AC power is passed through J 1-1And J 1-2To display power supply socket X 1, printer electric current socket X 2Power supply, pilot lamp D simultaneously 7Luminous, through after a while, treat C 4After charging finished, its voltage passed through R 4Be added to BG 2Base stage, BG 2Conducting, J 2Get electric adhesive, the 220V AC power is passed through J 2-1, J 2-2To host socket X 3Power supply, pilot lamp D simultaneously 8Luminous, later this state remains unchanged, thereby drives display, printer when having realized start earlier, after open the purpose of microcomputer.
Work finishes, with power switch K 1, K 2After the disconnection, because J 1-1Short circuit K still 1, the power supply of transformer BT is kept.But because K 2Disconnect, make C 3, C 4Lose charging voltage, C 4Pass through R 4Rapid discharge causes BG 2It is 0 that base potential drops immediately, BG 2End J 2Discharge J 2-1, J 2-2Disconnect D 8Extinguish the outage of host power supply socket.And C 3Then pass through R 2Slowly discharge, after after a while, BG 1Base potential just drop to 0, BG 1End, make J 1Discharge its J 1-1, J 1-2Disconnect D 9, D 7Extinguish, make whole dumps, realized first pass main frame, the purpose of external equipment is closed in the back.The time that postpones among the figure to open is depended on R 3, R 4, C 4Value, the time of postpone closing is depended on R 2, C 3Value.
At K 1During unlatching, if fuse blows for some reason, because D 9, C 7Form closed circuit ring with primary coil and the power supply of BT, make D 9Luminous warning is because C 7The elementary both end voltage of hypotensive effect BT very low, its secondary voltage of exporting can not make control circuit work, thereby makes X 1, X 2, X 3All no-voltage is exported and is 0; After changing new fuse, fuse is with C 7And D 9Short circuit, D 9Extinguish, circuit recovers normal condition.
With reference to Fig. 3, when the energized K switch 1After, the 220V alternating voltage is through R 6Step-down is by D 21, R 7, D 22, C 19, R 23Form rectification, voltage stabilizing and filtering circuit, 12 volts of direct supplys are provided, because K 2Also open ,+12V direct current passes through K 2Through R 1To C 3Rapid charge is simultaneously through D 11, R 3To C 4Do slowly charging; C 3The very fast end of charging process, its positive voltage is added to BG 1Base stage, BG 1Conducting, J 1Adhesive and to X 1, X 2The socket power supply.Through after a while, C 4Charging finishes, and makes BG 2Conducting, J 2Adhesive and to X 3The socket power supply.Work finishes, and closes K 1, K 2After, J 1-1Short circuit K still 1, supply voltage is kept.Because K 2Disconnect, make C 3, C 4Lose charging voltage, C 4Pass through R 21Rapid discharge causes BG 2Voltage falling is 0, BG 2End J 2Discharge X 3Power-off.And C 3Pass through R 20Slowly discharge, after after a while, BG 1Base potential just drop to 0, make BG 1End J 1Discharge X 1, X 2Power-off, all power supply also cuts off simultaneously.Realized the purpose of order open and close microcomputer on request.The time that postpones among the figure to open is depended on R 3, C 4Value, the time of late release, depend on C 3, R 20Value, other part principle of work of circuit are ditto described.
With reference to Fig. 4, IC in the circuit 2Be IC4011 (CMOS), its N 1-N 4Be four or two input nand gate integrated packages.N 1, N 2Form R ￣ S trigger, N 3, N 4Form delay circuit.Its power supply is worked as K by a dpdt double-pole double-throw (DPDT) button control 1During unlatching, K 2Also open simultaneously, the 220V AC power is through transformer BT step-down, D 1-D 4Obtain the DC voltage of 12V after the rectification, the one road supply with then by J 1, J 2The DC relay circuit that constitutes, another road supply control circuit.K 2After the unlatching, N 1The input noble potential, N 2The output noble potential is through D 27To C 26Charging, N subsequently 4The output electronegative potential, BG 1Conducting, J 1Adhesive, D 7Luminous, C meanwhile 27Also charging is because C 27Be through D 26, R 27Charging, thereby C 27Charging rate compare C 26Slowly, after after a while, N 3Just export electronegative potential, make BG 2Conducting, J 2Adhesive, D 8Luminous.
Work finishes, K 1, k 2After the disconnection, because J 1-1Short circuit K still 1, working power is kept.But because K 2Disconnect N 1The input electronegative potential, N 2The output electronegative potential, C 27Immediately through D 28Put electricity, N 3The output noble potential, BG 2End J 2Discharge D immediately 8Extinguish host power supply socket X 3Outage.And C 26Discharge will be passed through R 26, D 25, its velocity of discharge compares C 27Slowly, so after postponing a period of time, N 4Just export noble potential, make BG 1End J 1Discharge, make J 1-1, J 1-2Disconnect D 7, D 9Extinguish, all dump realizes closing earlier main frame, and the purpose of external equipment is closed in the back.The time that postpones among the figure to open is depended on R 27, C 27Value, the time of postpone closing is depended on R 26, C 26Value.
More than three kinds of control circuits working power 6-12V all can, its value depends on the operating voltage of relay, power consumption also depends on the working current of relay.IC among Fig. 2 1Be 7812 type regulator blocks, IC among Fig. 4 2Be IC4011CMOS four or two input nand gate integrated packages, relay can adopt XJD-12 or XJD-13; BG 1, BG 2Can use NPN type triode, also can use the positive-negative-positive triode, according to the type of employed triode in the circuit, determine DC voltage to the supplier of electricity of control circuit to.Its output voltage is 220V, and output power depends on the electric current that bears of relay contact, generally about 500W.Can satisfy the needs of microcomputer main frame and external equipment thereof fully.

Claims (2)

1, a kind of computer power automatic sequence switch comprises duplex power knob K 1And K 2, host power supply socket X 3, printer power supply socket X 2, display power supply socket X 1, current rectifying and wave filtering circuit, it is characterized in that BG 1Base stage connect the first output terminal of delay circuit signal, BG 2Base stage connect the hysteresis output terminal of delay circuit signal, BG 1And BG 2Emitter or the collector negative pole that connects the direct supply behind the rectifying and wave-filtering, triode BG 1Collector or emitter and relay J 1Terminals connect relay J 1Another wiring termination rectifying and wave-filtering after the negative pole of direct supply, relay J 1Two normally opened contact J are arranged 1-1And J 1-2, normally opened contact J 1-1K with the duplex power knob 1After the parallel connection, a termination printer power supply socket X 2With display power supply socket X 1Zero line side, another termination AC power zero line, normally opened contact J 1-2One termination printer power supply socket X 2With display power supply socket X 1The live wire end, the live wire of another termination AC power; Triode BG 2Collector or emitter and relay J 2Terminals connect relay J 2Two normally opened contact J are arranged 2-1And J 2-2, normally opened contact J 2-1A termination host power supply socket X 3Zero line side, the other end and printer power supply socket X 2With display power supply socket X 1The zero line side parallel connection, normally opened contact J 2-2A termination host power supply socket X 3The live wire end, another termination AC power live wire.
2, a kind of computer power automatic sequence switch according to claim 1 is characterized in that diode D 5With relay J 1Parallel connection, diode D 5Positive pole meet triode BG 1Collector or emitter, diode D 6With relay J 2Parallel connection, diode D 6Positive pole meet triode BG 2Collector or emitter.
CN 96237377 1996-08-23 1996-08-23 Automatic sequential switch for microcomputer power Expired - Fee Related CN2273027Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96237377 CN2273027Y (en) 1996-08-23 1996-08-23 Automatic sequential switch for microcomputer power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96237377 CN2273027Y (en) 1996-08-23 1996-08-23 Automatic sequential switch for microcomputer power

Publications (1)

Publication Number Publication Date
CN2273027Y true CN2273027Y (en) 1998-01-21

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ID=33912973

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 96237377 Expired - Fee Related CN2273027Y (en) 1996-08-23 1996-08-23 Automatic sequential switch for microcomputer power

Country Status (1)

Country Link
CN (1) CN2273027Y (en)

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee