CN106159926B - A kind of surge protection circuit and Surge Protector - Google Patents
A kind of surge protection circuit and Surge Protector Download PDFInfo
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- CN106159926B CN106159926B CN201610514702.0A CN201610514702A CN106159926B CN 106159926 B CN106159926 B CN 106159926B CN 201610514702 A CN201610514702 A CN 201610514702A CN 106159926 B CN106159926 B CN 106159926B
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- discharge tube
- surge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
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- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of surge protection circuits, comprising: varistor, gas-discharge tube, transient diode, booster circuit and rectification circuit.The electric current of transient diode is acquired by booster circuit and generates a high voltage, then, rectification circuit is by the high voltage rectifier at the trigger high voltage that can trigger gas-discharge tube, to trigger gas-discharge tube conducting, realize that the instantaneous large-currents such as thunder and lightning are released by piezoresistor series connection gas-discharge tube branch.It can be seen that; using this programme; in lightning current impact; transient diode fast response time, release part lightning current while, acquire its electric current varistor gas-discharge tube branch of connecting triggered by boosting, rectification circuit and release most of lightning current; and inductance is not used in this programme; circuit is small in size, and avoids the energy consumption of inductance, so that the lower power consumption of entire surge protection circuit.Except this, transient diode has the function of clamp voltage in this programme, and the limitation voltage of Surge Protector can be effectively reduced.
Description
Technical field
The present invention relates to field of circuit technology more particularly to a kind of surge protection circuits and Surge Protector.
Background technique
With the continuous development of science and technology, electronic equipment has become a part indispensable in daily life.And due to
Thunder and lightning, electronic equipment start and stop or failure and other reasons, can cause electronic equipment internal moment over-voltage or overcurrent, and then burn electronics and set
It is standby.
Currently, being protected frequently with Surge Protector to electronic equipment.As shown in Figure 1, respectively illustrating traditional wave
The circuit diagram of surge protector (SPD), Fig. 1 a are the SPD circuit diagram of conventional parallel type, and Fig. 1 b and Fig. 1 c are conventional serial type
SPD circuit diagram.Now by taking Fig. 1 c as an example, the working principle of existing SPD is introduced.
The surge protection circuit includes varistor MOV, gas-discharge tube GDT, inductance L and transient diode TVS,
In, the branch circuit parallel connection after varistor MOV connects with gas-discharge tube GDT is connected to the both ends of supply port (+, -), inductance L
It connects with electronic equipment, and electronic equipment is in parallel with transient diode TVS.
When having inductive lightning or other switching overvoltages intrusion power transmission line, gas-discharge tube GDT and varistor
The first order lightning protection component of MOV composition first turns on, and absorbs most of surging signal；The effect of inductor L is to prevent thunder and lightning
It is quick after invade；The effect for the second level lightning protection component being made of TVS is the lightning current invaded after releasing small part, is dropped to greatest extent
Voltage at low output port, to protect the safe operation of electronic equipment.
But inventors have found that with the increase of load current, the increase of the sectional area of used inductance and also result in
Internal resistance also follows increase, so that the power consumption and volume of Surge Protector increase.
Summary of the invention
In view of this, realizing surge protection the present invention provides a kind of surge protection circuit and Surge Protector
Meanwhile circuit is small in size, low in energy consumption.
In view of this, the present invention provides a kind of surge protection circuits, comprising: varistor, gas-discharge tube, transient state two
Pole pipe, booster circuit and rectification circuit；
The first end of the varistor respectively with external power supply input anode and the transient diode one end
It is connected, and the output plus terminal as the surge protection circuit；
The second end of the varistor is defeated with the input terminal of the gas-discharge tube and the rectification circuit respectively
Outlet is connected；
The other end of the transient diode is connected with the input terminal of the booster circuit；
The output end of the booster circuit is connected with the input terminal of the rectification circuit；
The output end of the gas-discharge tube is connected with the input negative terminal of the external power supply, and as the surge protection
The output negative terminal of circuit；
The booster circuit acquires the electric current of the transient diode and generates a high voltage, and the rectification circuit will be described
At trigger high voltage, the gas-discharge tube is connected in the trigger high voltage for high voltage rectifier.
Preferably, the booster circuit includes transformer, and the transformer includes primary side winding and vice-side winding, and institute
The quantity for stating vice-side winding is greater than the quantity of the primary side winding；
The primary side winding of the transformer is connected with the transient diode.
The transient diode includes unidirectional transient diode and two-way transient diode, and the transient diode includes one
A transient diode or multiple transient diodes be in parallel or multiple transient diode series connection or multiple transient diodes it is in parallel and
It is composed in series.
Output end of the both ends of the vice-side winding of the transformer as the booster circuit.
Preferably, the rectification circuit includes rectifier bridge,
The input terminal of the rectifier bridge is connected with the output end of the transformer, the output end of the rectifier bridge and the gas
The input terminal of body discharge tube is connected.
Preferably, the rectifier bridge is full bridge rectifier bridge.
Preferably, further includes: the varistor group in parallel with the varistor, the varistor group include at least one
A varistor.
Preferably, the rectification circuit include rectifier bridge and pull-up current-limiting circuit,
The first end of the rectifier bridge is connected by the pull-up current-limiting circuit with the output end of the gas-discharge tube, institute
The second end for stating rectifier bridge is connected with one end of the vice-side winding of the transformer, the third end of the rectifier bridge and the transformation
The other end of the vice-side winding of device is connected, and the output end of the rectifier bridge is connected with the input terminal of the gas-discharge tube.
Preferably, the pull-up current-limiting circuit includes at least a pull-up current-limiting resistance.
Preferably, the pull-up current-limiting circuit includes diode and resistance, and gas described in the anode of the diode is put
The output end of fulgurite is connected, and the cathode of the diode is connected by the resistance with the first end of the rectifier bridge.
Preferably, the rectification circuit further includes drop-down current-limiting circuit,
The first end of the rectifier bridge is connected by the drop-down current-limiting circuit with the first end of the varistor.
A kind of Surge Protector is packaged with the above-mentioned surge protection circuit of any one.
By above scheme it is found that the present invention provides a kind of surge protection circuits, comprising: varistor, gas-discharge tube,
Transient diode, booster circuit and rectification circuit.The electric current of transient diode is acquired by booster circuit and generates a high electricity
Pressure, then, rectification circuit by the high voltage rectifier at the trigger high voltage that can trigger gas-discharge tube, to trigger gas discharge
Pipe conducting realizes that the instantaneous large-currents such as thunder and lightning are released by piezoresistor series connection gas-discharge tube branch.As it can be seen that using we
Case, lightning current impact when, transient diode fast response time, release part lightning current while, acquire its electric current and pass through liter
Pressure, rectification circuit triggering varistor series connection gas-discharge tube branch are released most of lightning current, and inductance is not used in this programme,
Circuit is small in size, and avoids the energy consumption of inductance, so that the lower power consumption of entire surge protection circuit.Except this, wink in this programme
State diode has the function of clamp voltage, and the limitation voltage of Surge Protector can be effectively reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 a is the circuit diagram of Surge Protector in the prior art；
Fig. 1 b is the circuit diagram of another Surge Protector in the prior art；
Fig. 1 c is the circuit diagram of another Surge Protector in the prior art；
Fig. 2 is a kind of circuit theory analysis chart of surge protection circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of surge protection circuit provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of another surge protection circuit provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
As shown in Fig. 2, being a kind of circuit diagram of surge protection circuit provided in an embodiment of the present invention, the surge protection
Circuit includes: varistor MOV, gas-discharge tube GDT, transient diode TVS, booster circuit 10 and rectification circuit 20.
The connection relationship of each device are as follows:
The first end of varistor MOV respectively with the input anode of external power supply (in Fig. 2 the side In+end) and transient state two
One end of pole pipe TVS is connected, and the output plus terminal as surge protection circuit.The second end of varistor MOV respectively with gas
The input terminal of discharge tube GDT and the output end of rectification circuit 20 are connected.The other end and booster circuit 10 of transient diode TVS
Input terminal be connected.The output end of booster circuit 10 is connected with the input terminal of rectification circuit 20.The output end of gas-discharge tube GDT
It is connected with the input negative terminal of external power supply (in Fig. 2 the side In-end), and the output negative terminal as surge protection circuit.
Its working principle is that:
Lightning current impact when, transient diode fast response time, release part lightning current while, pass through booster circuit
It acquires the electric current of transient diode and generates a high voltage, then, rectification circuit puts the high voltage rectifier at that can trigger gas
The trigger high voltage of fulgurite realizes that the instantaneous large-currents such as thunder and lightning pass through piezoresistor string to trigger gas-discharge tube conducting
Connection gas-discharge tube branch is released.And inductance is not used in this programme, circuit is small in size, and avoids the energy consumption of inductance, so that whole
The lower power consumption of a surge protection circuit.Except this, transient diode has the function of clamp voltage in this programme, can effectively drop
The low limitation voltage of Surge Protector.
Embodiment two
On the basis of the above embodiments, surge protecting circuit provided in this embodiment further includes and the varistor
Varistor group in parallel, the varistor group include at least a varistor.In the present embodiment, varistor group is adopted
RV1, RV2 and RV3 with three resistance in parallel, i.e. in Fig. 3.
More specifically, the present embodiment rectification circuit can also be rectifier bridge and the circuit knot of pull-up current-limiting circuit composition
Structure.
It should be noted that in the present embodiment, transient diode uses unidirectional transient diode.
Its circuit connecting relation are as follows:
The first end of the rectifier bridge is connected by the pull-up current-limiting circuit with the output end of the gas-discharge tube, institute
The second end for stating rectifier bridge is connected with one end of the vice-side winding of the transformer, the third end of the rectifier bridge and the transformation
The other end of the vice-side winding of device is connected, and the output end of the rectifier bridge is connected with the input terminal of the gas-discharge tube.
In the present embodiment, pull-up current-limiting circuit includes at least a pull-up resistor.In fig. 3 it is shown that using three
The series connection of the example of pull-up resistor, i.e. R1, R2 and R3.It should be noted that the present embodiment does not limit the number of pull-up resistor,
It can be one, it is two or more.
Its working principle is that:
In lightning current by moment, transient diode VD1 fast response time first turns on, is connected on transient diode VD1
The primary side winding of transformer sense the electric current flowed through quickly, vice-side winding will generate a high voltage, whole by full-bridge
After stream, the trigger high voltage of a high potential, triggering gas-discharge tube V1 conducting, to make varistor RV1, varistor are generated
The branch of R2 and varistor R3 series connection gas-discharge tube V1 is released most of lightning current, and transient diode VD1 branch is
It flows through fraction electric current and the limitation voltage of Surge Protector in residual voltage clamper to certain range, will be effectively reduced.And
And inductance is not used in this programme, circuit is small in size, and avoids the energy consumption of inductance, so that the power consumption drop of entire surge protection circuit
It is low.
Embodiment three
The present embodiment is on the basis of example 2, the structure for pulling up current-limiting circuit to be changed, in this implementation
In example, as shown in figure 4, pull-up current-limiting circuit includes diode and current-limiting resistance, gas described in the anode of the diode is put
The output end of fulgurite is connected, and the cathode of the diode is connected by the resistance with the first end of the rectifier bridge.
Embodiment adds drop-down current-limiting circuits.Specifically, drop-down current-limiting circuit includes diode and current-limiting resistance,
The first end of varistor described in the anode of the diode is connected, the cathode of the diode by the resistance with it is described whole
The first end for flowing bridge is connected.
It should be noted that in the present embodiment, transient diode uses two-way transient diode.
Its working principle is identical as embodiment two, are as follows:
In lightning current by moment, transient diode VD1 fast response time first turns on, is connected on transient diode VD1
The primary side winding of transformer sense the electric current flowed through quickly, vice-side winding will generate a high voltage, whole by full-bridge
After stream, the trigger high voltage of a high potential, triggering gas-discharge tube V1 conducting, to make varistor RV1, varistor are generated
The branch of R2 and varistor R3 series connection gas-discharge tube V1 is released most of lightning current, and transient diode VD1 branch is
It flows through fraction electric current and the limitation voltage of Surge Protector in residual voltage clamper to certain range, will be effectively reduced.And
And inductance is not used in this programme, circuit is small in size, and avoids the energy consumption of inductance, so that the power consumption drop of entire surge protection circuit
It is low.
In summary: the present invention provides a kind of surge protection circuits, comprising: varistor, gas-discharge tube, transient state two
Pole pipe, booster circuit and rectification circuit.The electric current of transient diode is acquired by booster circuit and generates a high voltage, so
Afterwards, rectification circuit is led by the high voltage rectifier at the trigger high voltage that can trigger gas-discharge tube to trigger gas-discharge tube
It is logical, realize that the instantaneous large-currents such as thunder and lightning are released by piezoresistor series connection gas-discharge tube branch.As it can be seen that using this programme,
Lightning current impact when, transient diode fast response time, release part lightning current while, acquire its electric current by boosting,
Rectification circuit triggering varistor series connection gas-discharge tube branch is released most of lightning current, and inductance, electricity is not used in this programme
Road is small in size, and avoids the energy consumption of inductance, so that the lower power consumption of entire surge protection circuit.Except this, transient state in this programme
Diode has the function of clamp voltage, and the limitation voltage of Surge Protector can be effectively reduced.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of surge protection circuit characterized by comprising varistor, gas-discharge tube, transient diode, boosting electricity
Road and rectification circuit；
The first end of the varistor is connected with one end of the input anode of external power supply and the transient diode respectively,
And the output plus terminal as the surge protection circuit；
The second end of the varistor output end with the input terminal of the gas-discharge tube and the rectification circuit respectively
It is connected；
The other end of the transient diode is connected with the input terminal of the booster circuit；
The output end of the booster circuit is connected with the input terminal of the rectification circuit；
The output end of the gas-discharge tube is connected with the input negative terminal of the external power supply, and as the surge protection circuit
Output negative terminal；
The booster circuit acquires the electric current of the transient diode and generates a high voltage, and the rectification circuit will be described high electric
Pressure is rectified into trigger high voltage, and the gas-discharge tube is connected in the trigger high voltage.
2. surge protection circuit according to claim 1, which is characterized in that the booster circuit includes transformer, described
Transformer includes primary side winding and vice-side winding, and the quantity of the vice-side winding is greater than the quantity of the primary side winding；
The primary side winding of the transformer is connected with the transient diode,
Output end of the both ends of the vice-side winding of the transformer as the booster circuit.
3. surge protection circuit according to claim 2, which is characterized in that the rectification circuit includes rectifier bridge,
The input terminal of the rectifier bridge is connected with the output end of the transformer, and the output end of the rectifier bridge is put with the gas
The input terminal of fulgurite is connected.
4. surge protection circuit according to claim 3, which is characterized in that the rectifier bridge is full bridge rectifier bridge.
5. surge protection circuit according to claim 1, which is characterized in that further include: it is in parallel with the varistor
Varistor group, the varistor group include at least a varistor.
6. surge protection circuit according to claim 2, which is characterized in that the rectification circuit include rectifier bridge and on
Current-limiting circuit is drawn,
The first end of the rectifier bridge is connected by the pull-up current-limiting circuit with the output end of the gas-discharge tube, described whole
The second end of stream bridge is connected with one end of the vice-side winding of the transformer, third end and the transformer of the rectifier bridge
The other end of vice-side winding is connected, and the output end of the rectifier bridge is connected with the input terminal of the gas-discharge tube.
7. surge protection circuit according to claim 6, which is characterized in that the pull-up current-limiting circuit includes at least one
Pull up current-limiting resistance.
8. surge protection circuit according to claim 6, which is characterized in that the pull-up current-limiting circuit include diode with
And resistance, the output end of gas-discharge tube described in the anode of the diode are connected, the cathode of the diode passes through the electricity
Resistance is connected with the first end of the rectifier bridge.
9. surge protection circuit according to claim 6, which is characterized in that the rectification circuit further includes drop-down current limliting electricity
Road,
The first end of the rectifier bridge is connected by the drop-down current-limiting circuit with the first end of the varistor.
10. a kind of Surge Protector, which is characterized in that encapsulation is just like surge protection described in any one of claim 1-9
Circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514702.0A CN106159926B (en) | 2016-06-29 | 2016-06-29 | A kind of surge protection circuit and Surge Protector |
| PCT/CN2016/113913 WO2018000791A1 (en) | 2016-06-29 | 2016-12-30 | Surge protection circuit and surge protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514702.0A CN106159926B (en) | 2016-06-29 | 2016-06-29 | A kind of surge protection circuit and Surge Protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106159926A CN106159926A (en) | 2016-11-23 |
| CN106159926B true CN106159926B (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610514702.0A Active CN106159926B (en) | 2016-06-29 | 2016-06-29 | A kind of surge protection circuit and Surge Protector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106159926B (en) |
| WO (1) | WO2018000791A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159926B (en) * | 2016-06-29 | 2019-01-15 | 四川中光防雷科技股份有限公司 | A kind of surge protection circuit and Surge Protector |
| CN106505545B (en) * | 2016-12-14 | 2019-01-15 | 四川中光防雷科技股份有限公司 | A kind of surge protecting circuit and surge protector |
| CN106532673B (en) * | 2016-12-14 | 2019-01-15 | 四川中光防雷科技股份有限公司 | A kind of surge protecting circuit and surge protector |
| CN107196285A (en) * | 2017-07-26 | 2017-09-22 | 四川中光防雷科技股份有限公司 | A kind of signal surge device protector and its circuit |
| CN107294077A (en) * | 2017-07-26 | 2017-10-24 | 四川中光防雷科技股份有限公司 | A kind of surge device protector and its circuit |
| CN108512206B (en) * | 2018-04-13 | 2024-05-10 | 深圳远征技术有限公司 | Surge protection circuit and device for grounding resistance tester |
| CN112970163B (en) * | 2018-11-09 | 2022-09-16 | 华为技术有限公司 | Protection circuit for protecting against transient currents, voltages or electrical energy |
| CN109406905B (en) * | 2018-12-07 | 2023-09-08 | 珠海德利和电气有限公司 | Lightning current surge test system |
| CN112186724A (en) * | 2019-10-23 | 2021-01-05 | 四川电安智能科技有限公司 | Protective device based on overvoltage absorption energy storage |
| CN111339722B (en) * | 2020-03-09 | 2023-04-25 | 华北电力大学（保定） | PSpice simulation model and working simulation method of gas discharge tube |
| CN112290521B (en) * | 2020-09-25 | 2023-06-13 | 深圳中科德能科技有限公司 | Surge protection circuit for redundant power supply interface of switch |
| CN112260248A (en) * | 2020-10-30 | 2021-01-22 | 马鞍山市槟城电子有限公司 | Overvoltage protection circuit and electronic equipment |
| CN112379232A (en) * | 2020-11-13 | 2021-02-19 | 南方电网数字电网研究院有限公司 | High-frequency partial discharge sensing circuit, device and high-frequency partial discharge detection system |
| CN113644924A (en) * | 2021-01-26 | 2021-11-12 | 青岛鼎信通讯股份有限公司 | Signal receiving circuit applied to 10KV medium-voltage carrier system |
| CN112993943B (en) * | 2021-03-25 | 2023-05-26 | 深圳市同昌汇能科技发展有限公司 | Drive protection circuit of vacuum circuit breaker |
| CN114221316B (en) * | 2021-11-08 | 2024-02-20 | 中控技术股份有限公司 | Signal type surge protector and detection circuit |
| CN117118054B (en) * | 2023-10-23 | 2024-02-02 | 智道网联科技(深圳)有限公司 | Dual-power supply protection device |
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| US4683514A (en) * | 1984-10-03 | 1987-07-28 | The M-O Valve Company Limited | Surge voltage protective circuit arrangements |
| CN202268694U (en) * | 2011-10-24 | 2012-06-06 | 波达通信设备（广州）有限公司 | Lightning surge protection circuit applied to digital microwave transceiver |
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| JP2000050494A (en) * | 1998-07-23 | 2000-02-18 | Nissei Hitachi Denshi Service Kk | Arrester for coaxial cable |
| CN100424958C (en) * | 2004-10-26 | 2008-10-08 | 曾献昌 | A, C, mains overvoltage protector having metalic ceramic gas discharge tube |
| CN201018518Y (en) * | 2007-02-12 | 2008-02-06 | 赵福江 | Ethernet power supply overvoltage protector |
| CN103036224B (en) * | 2012-12-27 | 2015-03-11 | 徐大鹏 | Low residual voltage lightning protection device for power supply |
| CN205829161U (en) * | 2016-06-29 | 2016-12-21 | 四川中光防雷科技股份有限公司 | A kind of surge protection circuit and Surge Protector |
| CN106159926B (en) * | 2016-06-29 | 2019-01-15 | 四川中光防雷科技股份有限公司 | A kind of surge protection circuit and Surge Protector |
-
2016
- 2016-06-29 CN CN201610514702.0A patent/CN106159926B/en active Active
- 2016-12-30 WO PCT/CN2016/113913 patent/WO2018000791A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683514A (en) * | 1984-10-03 | 1987-07-28 | The M-O Valve Company Limited | Surge voltage protective circuit arrangements |
| CN202268694U (en) * | 2011-10-24 | 2012-06-06 | 波达通信设备（广州）有限公司 | Lightning surge protection circuit applied to digital microwave transceiver |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018000791A1 (en) | 2018-01-04 |
| CN106159926A (en) | 2016-11-23 |
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