CN201860104U - Thunder-proof circuit for computer - Google Patents
Thunder-proof circuit for computer Download PDFInfo
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- CN201860104U CN201860104U CN2010205044253U CN201020504425U CN201860104U CN 201860104 U CN201860104 U CN 201860104U CN 2010205044253 U CN2010205044253 U CN 2010205044253U CN 201020504425 U CN201020504425 U CN 201020504425U CN 201860104 U CN201860104 U CN 201860104U
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Abstract
A thunder-proof circuit for computer comprises a power supply voltage reduction circuit, a DC power supply circuit, a signal voltage reduction circuit, a signal circuit, first, second and third comparison circuits, and first, second and third execution circuits. When an input end of a power supply is struck by lightning, and a signal voltage output by the signal circuit is less than a reference voltage of the comparison circuits, the execution circuits are all cut off and out of work; a power supply line and a network line are both connected to a computer, and the computer runs normally; when the input end of the power supply is struck by lightning, and the signal voltage output by the signal circuit is greater than the reference voltage of the comparison circuits, the execution circuits are all turned on to work, the power supply line and the network line of the computer are both disconnected to the computer, so that the computer is not struck by lightning. In order to strengthen the thunder-proof function, the input ends of the power supply line and the network line of the computer are respectively connected to a bipolar transient voltage inhibiting diode. The circuit of the utility model is simple, and the cost is low; by the utility model, the power supply end and the network line end of the computer are both provided with the thunder-proof function.
Description
Technical field
The utility model relates to the electronic computer field, relates in particular to the anti thunder strike circuit that a kind of computer is used.
Background technology
Universal day by day along with computer, the incident of thunderbolt damage computer is also more and more thereupon.In August, 2009, the incident of damage 20 multiple computers that are thundering just took place in the Fenghua City Town of Zhejiang Province.The author's computer also once be struck by lightning and damage, so " thunderbolt computer " had deep keenly-felt pain!
Computer is generally all in indoor use, therefore, be subjected to the possibility of " direct lightning strike " bombardment very little, the overwhelming majority of damage computer is " the induction thunder " of invading computer with surge pulse current, voltage form, its approach of invading computer mainly contains two: first AC220V (or AC110V) power input mouth, it two is network input ports.Power transmission line is compared with grid line, and the former distributes more extensive more intensive than the latter, and therefore, power port is invaded the possibility of thunder and lightning much larger than the network port.
The situation that Needles can be struck by lightning and damage computer, people have designed the anti-thunderbolt of a lot of computers and have been provided with, but these are provided with the following problem of ubiquity:
1, only designs the anti-thunderbolt setting of single-port (power port or the network port), and do not considered the anti-thunderbolt measure of power supply, two ports of network simultaneously.For example the patent No. is 01265242.3 " computer lightning protection device ", does not consider the anti-thunderbolt measure of power port with regard to only having considered the network port; Number of patent application is 2007101160046 " lightning proof device for computer ", has then only considered power port and does not consider the anti-thunderbolt measure of the network port.These anti-thunderbolt settings that only turn round and look at single-port are incomplete anti-thunderbolt settings, and computer applications is after these are provided with, and thunder and lightning still can be invaded computer from port in the air.
2, some anti-thunderbolts are arranged on the technical defective that exists, and can not play the effect of anti-thunderbolt.For example the patent No. is 01265242.3 " computer lightning protection device ", seals in PTC thermistor and fuse in the input circuit of netting twine, utilizes thunder-strike current that the PTC thermistor is heated to heat up and present high resistance or fuse is heated the heat up method of fusing and realize " computer lightning protection ".This resist technology that uses in the forceful electric power field does not shield to computer in fact! Device in the forceful electric power field is motor for example, and anti-overcurrent, overvoltage is very capable in the short time.Computer then is different from motor, and there are many fragile integrated circuits, the poor ability of anti-overcurrent, overvoltage in its inside.Desire to make the PTC thermistor to be heated to rise resistance or blow a fuse, condition is exactly that thunder-strike current is by them and enter computer.The imagination of being not difficult rises resistance or blows a fuse in case thunder-strike current is heated the PTC thermistor, and the integrated circuit in the computer especially CMOS integrated circuit has been damaged for a long time! Therefore, this resist technology that is applicable to the forceful electric power device is difficult to realize the effect of " computer lightning protection ".
Summary of the invention
The purpose of this utility model be exactly Needles to the deficiencies in the prior art, design and a kind ofly can resist " anti thunder strike circuit for computer " that power port thunderbolt again can anti-network port thunderbolt.
The utility model realizes that the technical scheme of above-mentioned purpose is: a kind of anti thunder strike circuit for computer, and it is made up of power supply reduction voltage circuit, DC power supply circuit, signal reduction voltage circuit, signal circuit, first, second, third comparison circuit, first, second, third executive circuit; And, a termination AC220V of power supply reduction voltage circuit, another termination DC power supply circuit; One termination AC220V signal source of signal reduction voltage circuit, another termination signal circuit; The output of signal circuit connects first, second, third comparison circuit respectively; The output of first, second, third comparison circuit connects first, second, third executive circuit respectively successively; The direct voltage Uc of DC power supply circuit output supplies with first, second, third comparison circuit, first, second, third executive circuit respectively; Described DC power supply circuit, signal circuit, first, second, third comparison circuit, the equal connection circuit plate of first, second, third executive circuit ground.
The operation principle of the present utility model and the course of work are:
1, AC220V has two inputs in the utility model: the input of being made up of port B, port C 1 claims power input, and the used power supply AC220V of the utility model and load-computer of the present utility model all imports from this input; The input of being made up of port B, port A 2 claims signal input parts, from the AC220V of these input 2 inputs usefulness as signal source of the present utility model.
2, after the step-down of power supply reduction voltage circuit, DC power supply circuit rectification, filtering, voltage stabilizing,, late-class circuit presses Uc from the AC220V power supply of input 1 (being power input) input for providing galvanic current;
3, the AC220V signal from input 2 (being signal input part) input provides signal voltage Us for first, second, third comparison circuit after the step-down of signal reduction voltage circuit, signal circuit rectification, filtering;
4, the negative pole end of described direct voltage Uc, signal voltage Us all is connected with circuit board ground.
5, when power input is struck by lightning: the signal voltage Us of signal circuit output is less than the reference voltage of first, second, third comparison circuit, the equal output low level of first, second, third comparison circuit, first, second, third executive circuit is all by not working, be subjected to relay break contact DD11, the DD12 of the control of first, second, third executive circuit respectively, DD21, DD22, DD31, DD32 are all closed, and power line all is connected with computer with grid line, the computer operate as normal.
6, when power input is subjected to being struck by lightning, the signal voltage Us of signal circuit output increases and greater than the reference voltage of first, second, third comparison circuit, first, second, third comparison circuit is all exported high level, the equal conducting work of first, second, third executive circuit, be subjected to relay break contact DD11, the DD12 of the control of first, second, third executive circuit respectively, DD21, DD22, DD31, DD32 all disconnect, and promptly the power line of computer and computer disconnect; Four netting twines also all disconnect with computer, and the danger that computer is struck by lightning just is disengaged.
7, thunderbolt finishes, and signal voltage Us descends, the utility model automatically reset to two power lines of AC220V, four netting twines all with the normal operating conditions of computer connection.
Grasping and protecting oneself, could protect computer to exempt from the aim of thunderbolt effectively, the further technical measures that the utility model is taked are:
1, as the critical point, first road of anti-thunder; at power supply AC220V input and connect ambipolar transient voltage and suppress diode; effect through this diode; the surge residual voltage of thunder and lightning reduces; both protected safe operation of the present utility model; it cooperates with other circuit of the present utility model, has protected computer again effectively.
2, the impact of lightning surge pulse all and connect voltage stabilizing didoe and surge and absorb electric capacity can be stabilized in the two ends of described direct voltage Uc, signal voltage Us, protects their late-class circuits separately to be without prejudice.
The further again technical measures of the utility model are: be connected to ambipolar transient voltage respectively and suppress diode between four netting twines, these four ambipolar transient voltages suppress diode and cooperate with other circuit of the present utility model, can guarantee the anti-thunderbolt performance of computer netting twine input effectively.
The utility model further technical measures is: when power input is struck by lightning, at relay break contact DD11, DD12, DD21, DD22, when DD31, DD32 disconnect, corresponding relays make contact DH11, DH12, DH21, DH22, the closed and ground connection of DH31, DH32, be that the power input of computer, network input just all were connected with the earth after the utility model was carried out anti-thunderbolt program.
The utility model circuit is simple, and is cheap, uses the utility model and can bring following beneficial effect:
1, can make the power input of computer, network input all have anti-thunderbolt function;
2, be equipped with ambipolar transient voltage inhibition diode between power input, four netting twines, both guaranteed the safety of the utility model self, strengthened the anti-thunderbolt function of computer again;
3, after the utility model was carried out anti-thunderbolt program, the power input of computer, network input just all were connected with the earth, the stray induction electric current that comprises the lightning surge pulse can be imported the earth, thereby further strengthen the anti-thunderbolt function of computer.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model preferred embodiment.Among the figure, RL is expressed as computer.
Embodiment
Below, in conjunction with the accompanying drawings, the utility model is further described.
In conjunction with Fig. 1, the utility model is made up of power supply reduction voltage circuit 101, DC power supply circuit 102, signal reduction voltage circuit 103, signal circuit 104, first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107, first executive circuit 108, second executive circuit 109, the 3rd executive circuit 111; And, a termination AC220V of power supply reduction voltage circuit 101, another termination DC power supply circuit 102; One termination AC220V signal source of signal reduction voltage circuit 103, another termination signal circuit 104; The output of signal circuit 104 connects first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107 respectively; The output of first, second, third comparison circuit connects first executive circuit 108, second executive circuit 109, the 3rd executive circuit 111 respectively successively; The direct voltage Uc of DC power supply circuit 102 outputs supplies with first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107, first executive circuit 108, second executive circuit 109, the 3rd executive circuit 111 respectively; Described DC power supply circuit 102, signal circuit 104, first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107, first executive circuit 108, second executive circuit 109, the 3rd executive circuit 111 equal connection circuit plate ground.
The course of work of the present utility model is:
After 103 step-downs of signal reduction voltage circuit, signal circuit 104 rectifications, filtering, provide signal voltage Us from the AC220V signal of input 2 (being signal input part) input for first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107;
When the AC220V power supply network is struck by lightning, described signal voltage Us is less than the reference voltage of described first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107, the equal output low level of first, second, third comparison circuit, first executive circuit 108, second executive circuit 109, the 3rd executive circuit 111 are all by not working, be subjected to relay break contact DD11, the DD12 of the control of first, second, third executive circuit respectively, DD21, DD22, DD31, DD32 are all closed, power line all is connected with computer with grid line, the computer operate as normal.
When the AC220V power supply network is struck by lightning. described signal voltage Us is greater than the reference voltage of described first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107, first, second, third comparison circuit is all exported high level, first executive circuit 108, second executive circuit 109, the 111 equal conducting work of the 3rd executive circuit, be subjected to relay break contact DD11, the DD12 of the control of first, second, third executive circuit respectively, DD21, DD22, DD31, DD32 all disconnect, and the power line of computer and computer disconnect; Four netting twines also all disconnect with computer, and the danger that computer is struck by lightning just is disengaged.Meanwhile, the corresponding make contact DH11 of described relay, DH12, DH21, DH22, closed and the ground connection of DH31, DH32, be after the utility model is carried out anti-thunderbolt program, the power input of computer, network input just all are connected with the earth, and the stray induction electric current that comprises the lightning surge pulse that two inputs are relevant all is imported into the earth therewith.
Thunderbolt finishes, and signal voltage Us descends, the utility model automatically reset to two power lines of AC220V, four netting twines all with the normal operating conditions of computer connection.
For strengthening anti-thunderbolt function of the present utility model and protection the utility model self is not subjected to thunderbolt damage, be provided with ambipolar transient voltage at the input of AC220V power supply and suppress diode VD1.
For strengthening the anti-thunderbolt function of computer network input, be connected to ambipolar transient voltage between described four netting twines respectively and suppress diode VD2, VD3, VD4, VD5.
Fig. 2 is the circuit theory diagrams of the utility model preferred embodiment, among the figure:
First, second, third, fourth diode D1, D2, D3, D4, second, third capacitor C 2, C3, the first voltage stabilizing didoe DW1, second resistance R 2 has been formed DC power supply circuit 102; Wherein, first, second, third, fourth diode D1, D2, D3, D4 form bridge rectifier; Second, third capacitor C 2, C3 are filter capacitors; Become voltage stabilizing circuit after the first voltage stabilizing didoe DW1, second resistance R 2 (current-limiting resistance of the DW1) series connection; The acting in conjunction of above rectification, filtering, voltage-stabilizing device is for late-class circuit provides direct voltage U
C
Described filter capacitor C2, C3, the other effect of voltage-stabilizing device DW1, R2 are: stabilize the lightning surge pulse, be not subjected to the damage of lightning surge pulse with the protection late-class circuit.
Preferably, signal reduction voltage circuit 103 is made up of the 12nd resistance R 12, and the 12nd resistance R 12 1 ends are connected with port A, and the other end is connected with the negative pole of the 8th diode D8, the positive pole of the 11 diode D11.Because first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107 are all with the integrated transporting discharging device of making comparisons, and integrated transporting discharging is high input impedance, highly sensitive device, signal code Is can hang down and reach microampere order, and therefore, the 12nd resistance R 12 allows up to M Ω level.
Owing to have up to the 12nd resistance R 12 of M Ω level and make current limliting, therefore, can guarantee that back Grade circuit is not subjected to from the damage of the lightning surge pulse of input 2 (being signal input part) input.
Eight, the 9th, the tenth, the 11 diode D8, D9, D10, D11, the 4th, the 5th capacitor C 4, C5, the second voltage stabilizing didoe DW2, the 11st resistance R 11 has been formed signal circuit 104; Wherein, the 8th, the 9th, the tenth, the 11 diode D8, D9, D10, D11 form bridge rectifier; Four, the 5th capacitor C 4, C5 are filter capacitors; The second voltage stabilizing didoe DW2 is a voltage-stabilizing device; The acting in conjunction of above rectification, filtering, voltage-stabilizing device is for late-class circuit provides signal voltage Us; The 11 resistance R 11 is in parallel with signal voltage Us, and after their parallel connections, anode is connected negative terminal connection circuit plate ground with first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107.
Described filter capacitor C4, C5, the other effect of voltage-stabilizing device DW2 are: stabilize the lightning surge pulse, further protect late-class circuit not to be subjected to the damage of lightning surge pulse to cooperate the 12 resistance R 12.
Integrated transporting discharging IC-1 (1/4LM339), the 9th, the tenth resistance R 9, R10 have formed first comparison circuit 105; And the anode of a termination direct voltage Uc of the tenth resistance R 10, the other end are connected with an end of the 9th resistance R 9, inverting input 6 pin of integrated transporting discharging IC-1; The other end connection circuit plate ground of the 9th resistance R 9; The 12 pin connection circuit plate ground of integrated transporting discharging IC-1, output 1 pin connects first executive circuit 108, and in-phase input end 7 pin connect the anode of signal voltage Us.
Integrated transporting discharging IC-2 (1/4LM339), the 9th, the tenth resistance R 9, R10 have formed second comparison circuit 106; And, the anode of a termination direct voltage Uc of the tenth resistance R 10, the other end is connected with an end of the 9th resistance R 9, inverting input 4 pin of integrated transporting discharging IC-2; The other end connection circuit plate ground of the 9th resistance R 9; Output 2 pin of integrated transporting discharging IC-2 connect second executive circuit 109, and in-phase input end 5 pin connect the anode of signal voltage Us.
Integrated transporting discharging IC-3 (1/4LM339), the 9th, the tenth resistance R 9, R10 have formed the 3rd comparison circuit 107; And, the anode of a termination direct voltage Uc of the tenth resistance R 10, the other end is connected with an end of the 9th resistance R 9, inverting input 8 pin of integrated transporting discharging IC-3; The other end connection circuit plate ground of the 9th resistance R 9; 3 pin of integrated transporting discharging IC-3 connect the anode of direct voltage Uc, and output 14 pin connect the 3rd executive circuit 111, and in-phase input end 9 pin connect the anode of signal voltage Us.
More than the feature of first comparison circuit 105, second comparison circuit 106, the 3rd comparison circuit 107 be: the anode of signal voltage Us is connected with integrated transporting discharging IC-1 in-phase input end 7 pin, integrated transporting discharging IC-2 in-phase input end 5 pin, integrated transporting discharging IC-3 in-phase input end 9 pin, negative terminal connection circuit plate ground is these three input signals that integrated transporting discharging is common; Direct voltage Uc has produced dc partial voltage U6 after the 9th, the tenth resistance R 9, R10 dividing potential drop, the anode of this dc partial voltage U6 is connected with integrated transporting discharging IC-1 inverting input 6 pin, integrated transporting discharging IC-2 inverting input 4 pin, integrated transporting discharging IC-3 inverting input 8 pin, negative terminal connection circuit plate ground is these three reference voltages that integrated transporting discharging is common.
Three, the 4th resistance R 3, R4, the first triode V1 (C9014), first relay J, 1, the five diode D5 has formed first executive circuit 108 jointly; And, the emitter connection circuit plate ground of the first triode V1, collector electrode is connected with an end of first relay J 1 and the positive pole of the 5th diode D5, and base stage all is connected with output 1 pin, the 3rd, the 4th resistance R 3, the R4 end separately of integrated transporting discharging IC-1; The other end connection circuit plate ground of the 3rd resistance R 3; The negative pole of the other end of the other end of the 4th resistance R 4, first relay J 1, the 5th diode D5 all is connected with the anode of direct voltage Uc.
Five, the 6th resistance R 5, R6, the second triode V2 (C9014), second relay J, 2, the six diode D6 have formed second executive circuit 109 jointly; And, the emitter connection circuit plate ground of the second triode V2,, collector electrode is connected with an end of second relay J 2 and the positive pole of the 6th diode D6, and base stage all is connected with output 2 pin, the 5th, the 6th resistance R 5, the R6 end separately of integrated transporting discharging IC-2; The other end connection circuit plate ground of the 5th resistance R 5; The negative pole of the other end of the other end of the 6th resistance R 6, second relay J 2, the 6th diode D6 all is connected with the anode of direct voltage Uc.
Seven, the 8th resistance R 7, R8, the 3rd triode V3 (C9014), the 3rd relay J 3, the seven diode D7 have formed the 3rd executive circuit 111 jointly; And, the emitter connection circuit plate ground of the 3rd triode V3, collector electrode is connected with an end of the 3rd relay J 3 and the positive pole of the 7th diode D7, and base stage all is connected with output 14 pin, the 7th, the 8th resistance R 7, the R8 end separately of integrated transporting discharging IC-3; The other end connection circuit plate ground of the 7th resistance R 7; The negative pole of the other end of the other end of the 8th resistance R 8, the 3rd relay J 3, the 7th diode D7 all is connected with the anode of direct voltage Uc.
Present embodiment also has following feature:
1, at the AC220V power input and be connected to ambipolar transient voltage and suppress diode VD1; Between input L1i, the L3i of four netting twines, L2i, L6i, also be connected to ambipolar transient voltage respectively and suppress diode VD4, VD3, VD2, VD5.
2, the make contact DH11 of first relay J 1, DH12, the make contact DH21 of second relay J 2, DH22, the make contact DH31 of the 3rd relay J 3, DH32 all are connected with the earth.
3, break contact DD21, the DD22 of second relay J 2, break contact DD31, the DD32 of the 3rd relay J 3 are connected with input L2i, L6i, L1i, the L3i of four netting twines respectively; Common port COM21, the COM22 of second relay J 2, common port COM31, the COM32 of the 3rd relay J 3 are connected with output L2o, L6o, L1o, the L3o of four netting twines respectively; Common port COM11, the COM12 of first relay J 1 is connected with AC220V power output end D end, the F end of present embodiment respectively; D end, F end then are connected with load RL (being computer).
The course of work of present embodiment is:
1, when the AC220V power supply is struck by lightning, signal voltage Us is Us＜U6 less than reference voltage U6, the equal output low level of 14 pin of 1 pin of integrated transporting discharging IC-1,2 pin of integrated transporting discharging IC-2, integrated transporting discharging IC-3, the first triode V1, the second triode V2, the 3rd triode V3 all end, first relay J 1, second relay J 2, the 3rd relay J 3 are not all worked, their break contact DD11, DD12 separately, DD21, DD22, DD31, DD32 are all closed, AC220V power line, four netting twines are all connected the computer operate as normal with computer.
2, when the AC220V power supply is struck by lightning, signal voltage Us is Us＞U6 greater than reference voltage U6,14 pin of 1 pin of integrated transporting discharging IC-1,2 pin of integrated transporting discharging IC-2, integrated transporting discharging IC-3 are all exported high level, the first triode V1, the second triode V2, the equal conducting of the 3rd triode V3, first relay J 1, second relay J 2, the 3rd relay J 3 all electric work, their break contact DD11, DD12 separately, DD21, DD22, DD31, DD32 all disconnect, AC220V power line, four netting twines also all disconnect with computer, and the lightning risk of computer is disengaged.Meanwhile, first relay J 1, second relay J 2, the 3rd relay J 3 make contact DH11, DH12 separately, DH21, DH22, DH31, DH32 are all closed to be connected with the earth, the power end of computer, the stray induction of network terminal (comprising lightning induction) are imported into the earth, and the fail safe of computer is further promoted.
3, thunderbolt finishes, and signal voltage Us descends, present embodiment automatically reset to two power lines of AC220V, four netting twines all with the normal operating conditions of computer connection.This shows you easily sees, so locate to repeat no more.
Again in conjunction with Fig. 2: the AC220V power output end D end of present embodiment, F end, can make socket type, the input of four netting twines (L1i, L3i, L2i, L6i), output (L1o, L3o, L2o, L6o) also can be made socket type, this is conspicuous, and the end marks so omitted among Fig. 2.
Why the utility model considers the anti-thunder of four netting twines, is because broadband network has only 1,3,2,6 four netting twine to be inserted computer, could realize the communication with computer.
Claims (9)
1. anti thunder strike circuit for computer, be characterised in that: it is made up of power supply reduction voltage circuit (101), DC power supply circuit (102), signal reduction voltage circuit (103), signal circuit (104), first comparison circuit (105), second comparison circuit (106), the 3rd comparison circuit (107), first executive circuit (108), second executive circuit (109), the 3rd executive circuit (111), a termination AC220V of power supply reduction voltage circuit (101), another termination DC power supply circuit (102); One termination AC220V signal source of signal reduction voltage circuit (103), another termination signal circuit (104); The output of signal circuit (104) connects first comparison circuit (105), second comparison circuit (106), the 3rd comparison circuit (107) respectively; The output of first comparison circuit (105), second comparison circuit (106), the 3rd comparison circuit (107) connects first executive circuit (108), second executive circuit (109), the 3rd executive circuit (111) respectively successively; The direct voltage (UC) of DC power supply circuit (102) output is supplied with first comparison circuit (105), second comparison circuit (106), the 3rd comparison circuit (107), first executive circuit (108), second executive circuit (109), the 3rd executive circuit (111) respectively.
2. anti thunder strike circuit for computer as claimed in claim 1, it is characterized in that: first electric capacity (C1), first resistance (R1) have been formed power supply reduction voltage circuit (101), and, after first electric capacity (C1), first resistance (R1) parallel connection, an end suppresses an end of diode (VD1) with the C end of power input, the A end of signal input part, ambipolar transient voltage, the break contact (DD11) of relay (J1) all is connected; The other end is connected with the negative pole of first diode (D1), the positive pole of the 4th diode (D4).
3. anti thunder strike circuit for computer as claimed in claim 1, it is characterized in that: signal reduction voltage circuit (103) is made up of the 12nd resistance (R12), and, the 12nd resistance (R12) end is connected with the A end of signal input part, and the other end is connected with the negative pole of the 8th diode (D8), the positive pole of the 11 diode (D11).
4. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: integrated transporting discharging (IC-1), the 9th, the tenth resistance (R9), (R10) have formed first comparison circuit (105); And the anode of a termination direct voltage (Uc) of the tenth resistance (R10), the other end are connected with an end of the 9th resistance (R9), inverting input (6) pin of integrated transporting discharging (IC-1); The other end connection circuit plate ground of the 9th resistance (R9); 12 pin connection circuit plate ground of integrated transporting discharging (IC-1), output (1) pin connects first executive circuit (108), and in-phase input end (7) pin connects the anode of signal voltage (Us).
5. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: integrated transporting discharging (IC-2), the 9th, the tenth resistance (R9), (R10) have formed second comparison circuit (106); And, the anode of a termination direct voltage (Uc) of the tenth resistance (R10), the other end is connected with an end of the 9th resistance (R9), inverting input (4) pin of integrated transporting discharging (IC-2); The other end connection circuit plate ground of the 9th resistance (R9); Output (2) pin of integrated transporting discharging (IC-2) connects second executive circuit (109), and in-phase input end (5) pin connects the anode of signal voltage (Us).
6. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: integrated transporting discharging (IC-3), the 9th, the tenth resistance (R9), (R10) have formed the 3rd comparison circuit (107); And, the anode of a termination direct voltage (Uc) of the tenth resistance (R10), the other end is connected with an end of the 9th resistance (R9), inverting input (8) pin of integrated transporting discharging (IC-3); The other end connection circuit plate ground of the 9th resistance (R9); (3) pin of integrated transporting discharging (IC-3) connects the anode of direct voltage (Uc) pin, and output (14) pin connects the 3rd executive circuit (111), and in-phase input end (9) pin connects the anode of signal voltage (Us).
7. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: three, the 4th resistance (R3), (R4), and first triode (V1), first relay (J1), the 5th diode (D5) has been formed first executive circuit (108) jointly; And, the emitter connection circuit plate ground of first triode (V1), collector electrode is connected with an end of first relay (J1) and the positive pole of the 5th diode (D5), and base stage all is connected with output (1) pin, the 3rd, the 4th resistance (R3), (R4) end separately of integrated transporting discharging (IC-1); The other end connection circuit plate ground of the 3rd resistance (R3); The negative pole of the other end of the 4th resistance (R4), the other end of first relay J 1, the 5th diode (D5) all is connected with the anode of direct voltage (Uc).
8. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: five, the 6th resistance (R5), (R6), and second triode (V2), second relay (J2), the 6th diode (D6) has been formed second executive circuit (109) jointly; And, the emitter connection circuit plate ground of second triode (V2), collector electrode is connected with an end of second relay (J2) and the positive pole of the 6th diode (D6), and base stage all is connected with output (2) pin, the 5th, the 6th resistance (R5), (R6) end separately of integrated transporting discharging (IC-2); The other end connection circuit plate ground of the 5th resistance (R5); The negative pole of the other end of the other end of the 6th resistance (R6), second relay (J2), the 6th diode (D6) all is connected with direct voltage (Uc) anode.
9. anti thunder strike circuit for computer as claimed in claim 1 is characterized in that: seven, the 8th resistance (R7), (R8), and the 3rd triode (V3), the 3rd relay (J3), the 7th diode (D7) has been formed the 3rd executive circuit (111) jointly; And, the emitter connection circuit plate ground of the 3rd triode (V3), collector electrode is connected with an end of the 3rd relay (J3) and the positive pole of the 7th diode (D7), and base stage all is connected with output (14) pin, the 7th, the 8th resistance (R7), (R8) end separately of integrated transporting discharging (IC-3); The other end connection circuit plate ground of the 7th resistance (R7); The negative pole of the other end of the other end of the 8th resistance (R8), the 3rd relay (J3), the 7th diode (D7) all is connected with the anode of direct voltage (Uc).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205044253U CN201860104U (en) | 2010-08-16 | 2010-08-16 | Thunder-proof circuit for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205044253U CN201860104U (en) | 2010-08-16 | 2010-08-16 | Thunder-proof circuit for computer |
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|---|---|
| CN201860104U true CN201860104U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205044253U Expired - Fee Related CN201860104U (en) | 2010-08-16 | 2010-08-16 | Thunder-proof circuit for computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201860104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709897A (en) * | 2012-05-18 | 2012-10-03 | 卫斌鹏 | Network card protective device |
-
2010
- 2010-08-16 CN CN2010205044253U patent/CN201860104U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709897A (en) * | 2012-05-18 | 2012-10-03 | 卫斌鹏 | Network card protective device |
| CN102709897B (en) * | 2012-05-18 | 2014-10-15 | 国家电网公司 | Network card protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20130816 |