CN204992556U - Voltage electric current surge suppression circuit that can turn -off fast - Google Patents
Voltage electric current surge suppression circuit that can turn -off fast Download PDFInfo
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- CN204992556U CN204992556U CN201520607693.0U CN201520607693U CN204992556U CN 204992556 U CN204992556 U CN 204992556U CN 201520607693 U CN201520607693 U CN 201520607693U CN 204992556 U CN204992556 U CN 204992556U
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Abstract
The utility model provides a voltage electric current surge suppression circuit that can turn -off fast, this circuit include field effect transistor, first resistance, second resistance, third resistance, fourth resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, controllable accurate steady voltage source, first triode, second triode, third triode, electric capacity and stabilivolt. The utility model discloses the condition that the voltage current surge that can certain effectual control can turn -off fast restraines takes place.
Description
Technical field
The utility model relates to a kind of electric current and voltage anti-surge circuit, particularly relates to a kind of electric current and voltage surge restraint circuit that can turn off fast.
Background technology
In power supply use procedure, due to the filtering requirements of power consumption equipment, can add electric capacity at input, when electric capacity is larger, can produce very large surge current, this electric current can impact damage to power supply and mains switch.Existing circuit realizes the object of Anti-surging electric current by the service time controlling field effect transistor, but when high-speed switch repeatedly, because the electric capacity between grid source electrode can not repid discharge, field effect transistor can not accomplish quick shutoff, cause in second time opening process, the process that field effect transistor is not slowly opened, creates large surge current.In the power supply system, owing to there is varied load, unequally loaded different qualities, in the load transfer course of work, can there is fluctuation in busbar voltage.Or spread of voltage own power-supply system, all need rear level power supply to have the Anti-surging ability of voltage.
Existing anti-surge circuit often only has single electric current Anti-surging function or voltage Anti-surging function.Even if these two kinds of circuit are combined use, its way circuit also can relative complex, does not also possess quick shutoff, the function repeatedly started.
China Patent Publication No. is CN102231518A, name is called " a kind of surge restraint circuit ", disclose a kind of surge restraint circuit, comprise input power positive-negative input end, out-put supply positive-negative output end, field effect transistor, transistor seconds, third transistor, electric capacity, first resistance, second resistance and the 3rd resistance, described positive input terminal connects positive output end, described positive input terminal is by being connected with the grid of described field effect transistor and the collector electrode of described third transistor respectively after the 3rd described resistance, described positive input terminal is connected to described field effect transistor drain electrode through described electric capacity, the drain electrode of described field effect transistor is also connected with negative output terminal, described negative input end is connected with described field effect transistor source electrode by the first described resistance, the base stage of described third transistor connects the source electrode of field effect transistor, the base stage of described transistor seconds connects negative output terminal by the second described resistance, the collector electrode of the transistor seconds described in emitter connection of described third transistor, the emitter of described transistor seconds connects negative input end.
Utility model content
The purpose of this utility model is the deficiency overcoming available circuit, and propose a kind of circuit suppressing voltage surge and current surge, this circuit effectively reduces surge voltage and surge current, can turn off fast, realizes the startup repeatedly of equipment.
The technical solution adopted in the utility model is as follows:
A kind of electric current and voltage surge restraint circuit that can turn off fast, comprise field effect transistor V5, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, controllable accurate source of stable pressure V6, the first triode V1, the second triode V2, the 3rd triode V3, electric capacity C1 and voltage-stabiliser tube V4, wherein
Described 5th resistance R5 one end connecting circuit output plus terminal, the other end connects the 6th resistance R6;
The described 6th resistance R6 other end is connected to power supply negative terminal;
Described controllable accurate source of stable pressure V6 reference edge is connected to the common node of the 5th resistance R5 and the 6th resistance R6, and anode connects power supply negative terminal, and negative electrode connects the base stage of the first triode V1;
Described 7th resistance R7 one end connects the base stage of the first triode V1, other end connecting circuit input anode;
Described first triode V1 emitter connects power supply negative terminal, and collector electrode connects second resistance R2 one end;
Another termination first resistance of described second resistance R2 R1;
Described first resistance R1 other end connection circuit input anode;
Described second triode V2 base stage connects the common node of the first resistance R1 and the second resistance R2, and collector electrode connects the 8th resistance R8 one end;
Described 8th resistance R8 other end connecting circuit input anode;
Described second triode V2 emitter connects the 3rd triode V3 base stage;
Described 3rd triode V3 collector electrode connects the collector electrode of the second triode V2, and emitter connects the common node of the 3rd resistance R3 and the 4th resistance R4;
Described 3rd resistance R3 one end connecting circuit input anode, the other end connects the 4th resistance R4;
The described 4th resistance R4 other end connects power supply negative terminal;
Described electric capacity C1 is in parallel with the 3rd resistance R3;
Described voltage-stabiliser tube V4 negative terminal is connected to circuit input anode, and anode is connected to the emitter of the 3rd triode V3;
Described field effect transistor V5 grid is connected to the anode of voltage-stabiliser tube V4, source electrode connecting circuit input anode, drain electrode connecting circuit output plus terminal.
Preferably, described field effect transistor V5 is P-channel enhancement type isolated gate FET.
Optionally, the circuit that described second triode V2 and the 3rd triode V3 forms can replace with a Darlington triode.
Optionally, described controllable accurate source of stable pressure V6 can adopt TL431 device.
Compared with prior art, the utility model has following beneficial effect:
1. in the utility model, P-channel enhancement type isolated gate FET is connected in electric power loop, plays on-off action, is reached the object of Anti-surging by the on off state controlling field effect transistor; Control the on off state of the second triode and the 3rd triode, form the object that capacitor discharge loop reaches quick closedown field effect transistor;
2. the electric current and voltage surge restraint circuit that the utility model proposes, has regulating action to surge voltage electric current, effectively improves the reliability of electronic product;
3. this circuit effectively reduces surge voltage and surge current, can realize quick shutoff, and the startup repeatedly of equipment;
4. circuit structure is simple, safe and reliable, greatly reduces cost simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of electric current and voltage surge restraint circuit physical circuit figure that can turn off fast of the utility model;
Fig. 2 is a kind of electric current and voltage surge restraint circuit embody rule schematic diagram that can turn off fast of the utility model.
Embodiment
Below with reference to accompanying drawing of the present utility model; clear, complete description and discussion are carried out to the technical scheme in the utility model embodiment; obviously; as described herein is only a part of example of the present utility model; it is not whole examples; based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to protection range of the present utility model.
Be the physical circuit figure of a kind of electric current and voltage surge restraint circuit that can turn off fast of the utility model as shown in Figure 1, comprise field effect transistor V5, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, controllable accurate source of stable pressure V6, the first triode V1, the second triode V2, the 3rd triode V3, electric capacity C1 and voltage-stabiliser tube V4.
Physical circuit figure can connect according to following manner:
Described 5th resistance R5 one end connecting circuit output plus terminal, the other end connects the 6th resistance R6;
The described 6th resistance R6 other end is connected to power supply negative terminal;
Described controllable accurate source of stable pressure V6 reference edge is connected to the common node of the 5th resistance R5 and the 6th resistance R6, and anode connects power supply negative terminal, and negative electrode connects the base stage of the first triode V1;
Described 7th resistance R7 one end connects the base stage of the first triode V1, other end connecting circuit input anode;
Described first triode V1 emitter connects power supply negative terminal, and collector electrode connects second resistance R2 one end;
Another termination first resistance of described second resistance R2 R1;
Described first resistance R1 other end connection circuit input anode;
Described second triode V2 base stage connects the common node of the first resistance R1 and the second resistance R2, and collector electrode connects the 8th resistance R8 one end;
Described 8th resistance R8 other end connecting circuit input anode;
Described second triode V2 emitter connects the 3rd triode V3 base stage;
Described 3rd triode V3 collector electrode connects the collector electrode of the second triode V2, and emitter connects the common node of the 3rd resistance R3 and the 4th resistance R4;
Described 3rd resistance R3 one end connecting circuit input anode, the other end connects the 4th resistance R4;
The described 4th resistance R4 other end connects power supply negative terminal;
Described electric capacity C1 is in parallel with the 3rd resistance R3;
Described voltage-stabiliser tube V4 negative terminal is connected to circuit input anode, and anode is connected to the emitter of the 3rd triode V3;
Described P-channel enhancement type isolated gate FET V5 grid is connected to the anode of voltage-stabiliser tube V4, source electrode connecting circuit input anode, drain electrode connecting circuit output plus terminal.
According to a preferred embodiment, described field effect transistor V5 is P-channel enhancement type isolated gate FET.
According to another preferred embodiment, the circuit that described second triode V2 and the 3rd triode V3 forms can replace with a Darlington triode.
A kind of electric current and voltage surge restraint circuit operation principle that can turn off fast of the present embodiment is as follows:
Work as device power-on, when having input voltage, by base stage and the emitter formation loop of the 7th resistance R7, the first triode V1, produce the base current of the first triode V1.First triode V1 conducting, the first resistance R1 and the second resistance R2 is to input voltage dividing potential drop.3rd resistance R3 and the 4th resistance R4 is also to input voltage dividing potential drop.By making the base voltage of the second triode V2 be less than the emitter voltage of the 3rd triode to the selection of divider resistance resistance, the second triode V2 and the 3rd triode V3 is caused to end.Electric capacity C1 is charged by resistance R4, thus makes P-channel enhancement type isolated gate FET V5 source electrode and grid voltage slowly become large, and P-channel enhancement type isolated gate FET V5 slowly conducting, reaches the object of electric current Anti-surging.
Work as device powers down, when not having input voltage, the voltage driven second triode V2 on electric capacity C1 and the 3rd triode V3, makes their conductings, forms the discharge loop of electric capacity C1, and electric capacity C1 is discharged by the 8th resistance R8.Voltage on electric capacity C1 declines fast, and P-channel enhancement type isolated gate FET V5 turns off fast.When equipment second time powers up, can suppress surge current, the object that the equipment of reaching can start repeatedly.
5th resistance R5 and the 6th resistance R6 carries out dividing potential drop to output voltage, and when the reference voltage terminal of branch pressure voltage higher than controllable accurate source of stable pressure V6, controllable accurate source of stable pressure V6 conducting, make the first triode V1 base voltage be 0V, the first triode V1 ends.Second triode V2 conducting, 3rd triode V3 conducting, P-channel enhancement type isolated gate FET V5 amplifies state by full conducting steered linear, output voltage declines, the common point voltage drop of the 5th resistance R5 and the 6th resistance R6, controllable accurate source of stable pressure V6 ends, thus makes P-channel enhancement type isolated gate FET V5 transfer full conducting to by Linear Amplifer state.Above-mentioned work causes by sampled voltage that P-channel enhancement type isolated gate FET V5's enter Linear Amplifer state, increases electric power loop impedance, reaches the effect absorbing voltage surge.
In the present embodiment, input direct voltage is 24V, all the other component parameters as described in Figure 2, wherein, the resistance of described first resistance R1, the 3rd resistance R3, the 4th resistance R4, the 6th resistance R6 and the 7th resistance R7 is 10k Ω, the resistance of described second resistance R2 is 5.1k Ω, the resistance of described 5th resistance R5 is 100k Ω, the resistance of described 8th resistance R8 is 200 Ω, described controllable accurate source of stable pressure V6 adopts TL431 type controllable accurate source of stable pressure, for the adjustable integrated regulator of a kind of three end, the capacitance of described electric capacity C1 is 22 μ F.
When after device power-on, when having input voltage, by base stage and the emitter formation loop of the 7th resistance R7, the first triode V1, produce the base current of the first triode V1.First triode V1 conducting, the first resistance R1 and the second resistance R2 carries out dividing potential drop to input voltage, and branch pressure voltage is 24 × 5.1/ (10+5.1)=8.1V.Due to the existence of electric capacity C1, input voltage is charged to electric capacity C1 by the 4th resistance R4, and charge constant is T1, T1=RC=10 × 10
3× 22 × 10
-6=0.22S, P-channel enhancement type isolated gate FET V5 are by turning off guide by crossing.Input power slowly charges to the electric capacity in power consumption equipment, reaches the object of Anti-surging electric current.According to different load capacitances, by the suppression selecting different resistance value control time constants to carry out current surge.
Work as device powers down, when there is no input voltage, because the 3rd resistance R3 and the 4th resistance R4 is to input voltage dividing potential drop, and electric capacity C1 is parallel to the two ends of the 3rd resistance R3, therefore the voltage 12V on electric capacity C1, electric capacity C1 drives the second triode V2 and the 3rd triode V3 simultaneously, makes both conductings, form the discharge loop of electric capacity C1, electric capacity C1 is discharged by the 8th resistance R8.Discharge time constant is T2, T2=RC=200 × 22 × 10
-6=0.0044S, the voltage on electric capacity C1 declines fast, and P-channel enhancement type isolated gate FET V5 turns off fast.
When equipment second time powers up, can suppress surge current, the object that the equipment of reaching can start repeatedly.
5th resistance R5 and the 6th resistance R6 carries out dividing potential drop to output voltage, when there is surge voltage, as magnitude of voltage reach 28V time, when branch pressure voltage is the reference voltage terminal 2.5Vs of 28 × 10/ (10+100)=2.545V higher than controllable accurate source of stable pressure V6, controllable accurate source of stable pressure V6 conducting, cause the first triode V1 base voltage to be 0V, the first triode V1 ends.Second triode V2 conducting, 3rd triode V3 conducting, P-channel enhancement type isolated gate FET V5 transfers Linear Amplifer state to by conducting, output voltage declines, the branch pressure voltage of the 5th resistance R5 and the 6th resistance R6 declines, controllable accurate source of stable pressure V6 ends, thus makes P-channel enhancement type isolated gate FET V5 transfer to open-minded by Linear Amplifer state, reaches the effect absorbing voltage surge.
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (4)
1. the electric current and voltage surge restraint circuit that can turn off fast, it is characterized in that, comprise field effect transistor V5, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, controllable accurate source of stable pressure V6, the first triode V1, the second triode V2, the 3rd triode V3, electric capacity C1 and voltage-stabiliser tube V4, wherein
Described 5th resistance R5 one end connecting circuit output plus terminal, the other end connects the 6th resistance R6;
The described 6th resistance R6 other end is connected to power supply negative terminal;
Described controllable accurate source of stable pressure V6 reference edge is connected to the common node of the 5th resistance R5 and the 6th resistance R6, and anode connects power supply negative terminal, and negative electrode connects the base stage of the first triode V1;
Described 7th resistance R7 one end connects the base stage of the first triode V1, other end connecting circuit input anode;
Described first triode V1 emitter connects power supply negative terminal, and collector electrode connects second resistance R2 one end;
Another termination first resistance of described second resistance R2 R1;
Described first resistance R1 other end connection circuit input anode;
Described second triode V2 base stage connects the common node of the first resistance R1 and the second resistance R2, and collector electrode connects the 8th resistance R8 one end;
Described 8th resistance R8 other end connecting circuit input anode;
Described second triode V2 emitter connects the 3rd triode V3 base stage;
Described 3rd triode V3 collector electrode connects the collector electrode of the second triode V2, and emitter connects the common node of the 3rd resistance R3 and the 4th resistance R4;
Described 3rd resistance R3 one end connecting circuit input anode, the other end connects the 4th resistance R4;
The described 4th resistance R4 other end connects power supply negative terminal;
Described electric capacity C1 is in parallel with the 3rd resistance R3;
Described voltage-stabiliser tube V4 negative terminal is connected to circuit input anode, and anode is connected to the emitter of the 3rd triode V3;
Described field effect transistor V5 grid is connected to the anode of voltage-stabiliser tube V4, source electrode connecting circuit input anode, drain electrode connecting circuit output plus terminal.
2. a kind of electric current and voltage surge restraint circuit that can turn off fast as claimed in claim 1, it is characterized in that, described field effect transistor V5 is P-channel enhancement type isolated gate FET.
3. a kind of electric current and voltage surge restraint circuit that can turn off fast as claimed in claim 1, is characterized in that, the circuit that described second triode V2 and the 3rd triode V3 forms can with a Darlington triode replacement.
4. a kind of electric current and voltage surge restraint circuit that can turn off fast as claimed in claim 1, it is characterized in that, described controllable accurate source of stable pressure V6 can adopt TL431 type controllable accurate source of stable pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520607693.0U CN204992556U (en) | 2015-08-13 | 2015-08-13 | Voltage electric current surge suppression circuit that can turn -off fast |
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| CN201520607693.0U CN204992556U (en) | 2015-08-13 | 2015-08-13 | Voltage electric current surge suppression circuit that can turn -off fast |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063545A (en) * | 2018-01-16 | 2018-05-22 | 中国科学院空间应用工程与技术中心 | Power supply circuit and method of supplying power to Surge suppression and defencive function |
| CN112310950A (en) * | 2020-10-21 | 2021-02-02 | 中国科学院长春光学精密机械与物理研究所 | Surge suppression circuit and aerospace equipment |
| CN112993957A (en) * | 2021-03-19 | 2021-06-18 | 中国电子科技集团公司第二十九研究所 | Circuit and method for inhibiting power-on surge current of high-capacity capacitor |
| CN116131238A (en) * | 2023-04-14 | 2023-05-16 | 深圳市迅特通信技术股份有限公司 | Circuit for inhibiting hot plug surge current and pluggable module |
| CN117220255A (en) * | 2023-11-07 | 2023-12-12 | 上海维安半导体有限公司 | Blocking type surge protector |
-
2015
- 2015-08-13 CN CN201520607693.0U patent/CN204992556U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063545A (en) * | 2018-01-16 | 2018-05-22 | 中国科学院空间应用工程与技术中心 | Power supply circuit and method of supplying power to Surge suppression and defencive function |
| CN108063545B (en) * | 2018-01-16 | 2023-12-22 | 中国科学院空间应用工程与技术中心 | Power supply circuit with surge suppression and protection functions and power supply method |
| CN112310950A (en) * | 2020-10-21 | 2021-02-02 | 中国科学院长春光学精密机械与物理研究所 | Surge suppression circuit and aerospace equipment |
| CN112993957A (en) * | 2021-03-19 | 2021-06-18 | 中国电子科技集团公司第二十九研究所 | Circuit and method for inhibiting power-on surge current of high-capacity capacitor |
| CN112993957B (en) * | 2021-03-19 | 2023-05-09 | 中国电子科技集团公司第二十九研究所 | Circuit and method for inhibiting power-on surge current of high-capacity capacitor |
| CN116131238A (en) * | 2023-04-14 | 2023-05-16 | 深圳市迅特通信技术股份有限公司 | Circuit for inhibiting hot plug surge current and pluggable module |
| CN116131238B (en) * | 2023-04-14 | 2023-08-08 | 深圳市迅特通信技术股份有限公司 | Circuit for inhibiting hot plug surge current and pluggable module |
| CN117220255A (en) * | 2023-11-07 | 2023-12-12 | 上海维安半导体有限公司 | Blocking type surge protector |
| CN117220255B (en) * | 2023-11-07 | 2024-04-05 | 上海维安半导体有限公司 | Blocking type surge protector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180130 Address after: 200050 Anhua Road, Shanghai, No. 492, No. Patentee after: SHANGHAI AEROSPACE COMPUTER TECHNOLOGY INSTITUTE Address before: 200080 Shanghai city Hongkou District street Xingang Tianbao Road No. 881 Patentee before: Shanghai Aerospace Measurement Control Communication Institute |