CN108808649A - A kind of surging protection circuit - Google Patents
A kind of surging protection circuit Download PDFInfo
- Publication number
- CN108808649A CN108808649A CN201811009489.3A CN201811009489A CN108808649A CN 108808649 A CN108808649 A CN 108808649A CN 201811009489 A CN201811009489 A CN 201811009489A CN 108808649 A CN108808649 A CN 108808649A
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- China
- Prior art keywords
- discharge pipe
- unit
- solid
- varistor
- pipe unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the invention discloses a kind of surging protection circuit, the surging protection circuit includes differential mode surge protective unit and common mode carrying out surge protection unit differential mode surge protective unit for being connect respectively with firewire and zero curve；Common mode carrying out surge protection unit includes varistor unit, gas discharge pipe unit and solid discharge pipe unit, the varistor unit with firewire and zero curve for connecting respectively, the gas discharge pipe unit is connect with the varistor unit and the solid discharge pipe unit respectively, the solid discharge pipe unit ground connection；Wherein, the gas discharge pipe unit includes at least one gas-discharge tube, a both ends capacitance in parallel for the gas-discharge tube；The solid discharge pipe unit includes an at least solid discharging tube.The surging protection circuit that the embodiment of the present invention proposes can meet the requirement of protection lightning surge requirement and safety pressure resistance simultaneously.
Description
Technical field
The present invention relates to carrying out surge protection technical field more particularly to a kind of surging protection circuits.
Background technology
Surge (Electrical surge) be also surging, refers to the moment mistake for exceeding normal working voltage on electrical equipment
Voltage.Essentially, surge is a kind of violent pulse being happened in only hundreds of times a ten thousandth second.Generate the original of surge
Because including internal cause, such as electrical equipment start and stop and failure and external cause such as thunder and lightning etc..
In outdoor environment, the natural phenomenas such as thunder and lightning often occur.Therefore, it is however generally that need to be arranged in outdoor
The equipment such as Switching Power Supply and LED drive power are equipped with surging protection circuit.
In the prior art, surging protection circuit usually only selects gas-discharge tube as protective device.Since gas is put
The residual voltage of fulgurite is higher, in order to meet the requirement of protection lightning surge, generally requires the selection lower gas of discharge voltage
Discharge tube.However, the pressure resistance of safety regulation certification at present is more demanding.In order to meet resistance to pressure request, then need to select electric discharge electricity
Press larger gas-discharge tube.
As it can be seen that in the surging protection circuit of the prior art, it is difficult to while meeting and protecting lightning surge requirement and safety resistance to
Pressure request.
Invention content
The embodiment of the present invention proposes a kind of surging protection circuit, it is intended to solve existing surging protection circuit and be difficult to meet simultaneously
The problem of protecting the requirement that lightning surge requires and safety is pressure-resistant.
To solve the above-mentioned problems, a kind of surging protection circuit of the embodiment of the present invention, the surging protection circuit include：
Differential mode surge protective unit, for being connect respectively with firewire and zero curve；
Common mode carrying out surge protection unit, including varistor unit, gas discharge pipe unit and solid discharge pipe unit, institute
Varistor unit is stated for being connect respectively with firewire and zero curve, the gas discharge pipe unit respectively with the varistor
Unit and solid discharge pipe unit connection, the solid discharge pipe unit ground connection；Wherein, the gas discharge pipe unit
Including at least one gas-discharge tube, a both ends capacitance in parallel for the gas-discharge tube；The solid discharge pipe unit includes
An at least solid discharging tube.
Its further technical solution is that the differential mode surge protective unit includes the first varistor, first pressure
Quick resistance with firewire and zero curve for connecting respectively.
Its further technical solution is that the varistor unit includes the second varistor and the pressure-sensitive electricity of third
Resistance, second varistor and third varistor are used to be connected between firewire and zero curve after being connected in series with, the gas
Electric discharge pipe unit is connected to the connecting node of second varistor and third varistor.
Its further technical solution is that the gas discharge pipe unit includes multiple gas-discharge tubes, and the gas is put
Multiple gas-discharge tubes of fulgurite unit are connected in series with.
Its further technical solution is that the solid discharge pipe unit includes multiple solid discharging tubes, and the solid is put
Multiple solid discharging tubes of fulgurite unit are connected in series with.
Its further technical solution is that the solid discharge pipe unit includes multigroup solid discharging tube parallel with one another
Group, the solid discharging tube group include at least one solid discharging tube.
Its further technical solution is that the solid discharging tube group includes multiple solid discharging tubes, the solid discharge
Multiple solid discharging tubes of pipe group are connected in series with.
Its further technical solution is that the surging protection circuit further includes security unit, and the security unit includes
First fuse and the second fuse, first fuse are used to be set to firewire, and second fuse is for being set to
On zero curve.
By the technical solution of the application embodiment of the present invention, the gas discharge pipe unit of common mode carrying out surge protection unit includes extremely
A few gas-discharge tube, and a both ends capacitance in parallel for gas-discharge tube.Solid discharge pipe unit is put including an at least solid
Fulgurite.In the early period of surge, capacitor charging process, only solid discharging tube are connected, and residual voltage is very low.When capacitance discharges,
Gas-discharge tube is connected so that and residual voltage slightly increases, but far below individually using gas-discharge tube mode (tradition side
Formula) residual voltage, so as to meet the requirement of low-residual voltage.And the stronger gas-discharge tube of voltage endurance capability is selected
It can ensure that surging protection circuit disclosure satisfy that the requirement of high voltage.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of schematic block diagram for surging protection circuit that the embodiment of the present invention proposes；
Fig. 2 is the schematic diagram that residual voltage v changes with response time t；
Fig. 3 is a kind of circuit diagram for surging protection circuit that the embodiment of the present invention proposes；
Fig. 4 is a kind of circuit diagram for surging protection circuit that another embodiment of the present invention proposes；And
Fig. 5 is a kind of circuit diagram for surging protection circuit that further embodiment of this invention proposes.
Reference numeral
Differential mode surge protective unit 10；Common mode carrying out surge protection unit 20；Varistor unit 21；Gas discharge pipe unit
22；Solid discharge pipe unit 23；Solid discharging tube group 231 and security unit 30.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states, similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, element, component and/or its presence or addition gathered.
It is also understood that in this embodiment of the present invention term used in the description merely for the sake of description particular implementation
Example purpose and be not intended to limit the embodiment of the present invention.Such as the institute in specification and appended book of the embodiment of the present invention
As use, other situations unless the context is clearly specified, otherwise " one " of singulative, "one" and "the" are intended to wrap
Include plural form.
Referring to Fig. 1-Fig. 5, the embodiment of the present invention proposes a kind of surging protection circuit, as seen from the figure, the surging protection circuit
Including differential mode surge protective unit 10 and common mode carrying out surge protection unit 20, common mode carrying out surge protection unit 20 includes varistor list
Member 21, gas discharge pipe unit 22 and solid discharge pipe unit 23.
Differential mode surge protective unit 10 for being connect respectively with firewire L and zero curve N, with absorb firewire L and zero curve N it
Between differential mode surge.
Common mode carrying out surge protection unit 20 includes varistor unit 21, gas discharge pipe unit 22 and solid discharging tube list
Member 23.Varistor unit 21 with firewire L and zero curve N for connecting respectively.Gas discharge pipe unit 22 respectively with pressure-sensitive electricity
It hinders unit 21 and solid discharge pipe unit 23 connects, solid discharge pipe unit 23 is grounded.Common mode carrying out surge protection unit 20 is used for
Absorb the common mode surge between firewire L or zero curve N and the earth.
In the embodiment of the present invention, gas discharge pipe unit 22 includes at least one gas-discharge tube GDT, and gas-discharge tube
The one capacitance C of both ends parallel connection of GDT.Solid discharge pipe unit 23 includes an at least solid discharging tube TSS.
In surging protection circuit proposed by the present invention, when generating surge in circuit, the both ends precursor gas discharge tube GDT
Capacitance C charges and gas-discharge tube GDT is short-circuit, only solid discharging tube TSS conductings at this time, and residual voltage is relatively low.
Referring to Fig. 2, the schematic diagram changed with response time t for residual voltage v.When the response of solid discharging tube TSS
Between for nanosecond rank, and the response time of gas-discharge tube GDT be microsecond rank.As seen from the figure, the residual of solid discharging tube TSS
Voltage V2 will be much smaller than the residual voltage V1 of gas-discharge tube GDT.
By the technical solution of the application embodiment of the present invention, the gas discharge pipe unit 22 of common mode carrying out surge protection unit 20 wraps
Include at least one gas-discharge tube GDT, and the one capacitance C of both ends parallel connection of gas-discharge tube GDT.Solid discharge pipe unit 23 includes
An at least solid discharging tube TSS.In the early period of surge, the conducting of capacitance C charging processes, only solid discharging tube TSS, residual voltage
It is very low.When capacitance C discharges, gas-discharge tube GDT conductings so that residual voltage slightly increases, but is far below and individually adopts
With the residual voltage of gas-discharge tube mode (traditional approach), so as to meet the requirement of low-residual voltage.And it selects
The stronger gas-discharge tube GDT of voltage endurance capability can ensure that surging protection circuit disclosure satisfy that the requirement of high voltage.
It, as seen from the figure should for a kind of circuit diagram for surging protection circuit that one embodiment of the invention proposes referring to Fig. 3
Surging protection circuit includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode surge
Protective unit 20 includes varistor unit 21, gas discharge pipe unit 22 and solid discharge pipe unit 23.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connections.
Further, security unit 30 includes that the first fuse F1 and the second fuse F2, the first fuse F1 are used for
On firewire L, the second fuse F2 is used to be set to zero curve N.
Further, varistor unit 21 includes the second varistor RV2 and third varistor RV3, the second pressure
Quick resistance RV2 and third varistor RV3 is used to be connected between firewire L and zero curve N after being connected in series with, gas discharge pipe unit
22 are connected to the connecting node of the second varistor RV2 and third varistor RV3.
Further, gas discharge pipe unit 22 includes a gas-discharge tube GDT, and gas-discharge tube GDT is put with solid
Fulgurite unit 23 connects, the one capacitance C of both ends parallel connection of gas discharge GDT.
Further, solid discharge pipe unit 23 includes a solid discharging tube TSS, solid discharging tube TSS ground connection.
It is a kind of circuit diagram for surging protection circuit that another embodiment of the present invention proposes referring to Fig. 4, as seen from the figure,
The surging protection circuit includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode wave
It includes varistor unit 21, gas discharge pipe unit 22 and solid discharge pipe unit 23 to gush protective unit 20.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connections.
Further, security unit 30 includes that the first fuse F1 and the second fuse F2, the first fuse F1 are used for
On firewire L, the second fuse F2 is used to be set to zero curve N.
Further, varistor unit 21 includes the second varistor RV2 and third varistor RV3, the second pressure
Quick resistance RV2 and third varistor RV3 is used to be connected between firewire L and zero curve N after being connected in series with, gas discharge pipe unit
22 are connected to the connecting node of the second varistor RV2 and third varistor RV3.
Further, gas discharge pipe unit 22 include multiple gas-discharge tube GDT, gas discharge pipe unit 22 it is multiple
Gas-discharge tube GDT is connected in series with.The both ends of each gas-discharge tube GDT one capacitance C of parallel connection.By in each gas discharge
The both ends one capacitance C of parallel connection of pipe GDT may make voltage more uniformly to load between each gas-discharge tube GDT.
Further, solid discharge pipe unit 23 include multiple solid discharging tube TSS, solid discharge pipe unit 23 it is multiple
Solid discharging tube TSS is connected in series with.
By connecting, gas-discharge tube GDT and solid discharging tube TSS can further improve the resistance to of surging protection circuit
Pressure value.
It is a kind of circuit diagram for surging protection circuit that another embodiment of the present invention proposes referring to Fig. 5, as seen from the figure,
The surging protection circuit includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode wave
It includes varistor unit 21, gas discharge pipe unit 22 and solid discharge pipe unit 23 to gush protective unit 20.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connections.
Further, security unit 30 includes that the first fuse F1 and the second fuse F2, the first fuse F1 are used for
On firewire L, the second fuse F2 is used to be set to zero curve N.
Further, varistor unit 21 includes the second varistor RV2 and third varistor RV3, the second pressure
Quick resistance RV2 and third varistor RV3 is used to be connected between firewire L and zero curve N after being connected in series with, gas discharge pipe unit
22 are connected to the connecting node of the second varistor RV2 and third varistor RV3.
Further, gas discharge pipe unit 22 include multiple gas-discharge tube GDT, gas discharge pipe unit 22 it is multiple
Gas-discharge tube GDT is connected in series with.The both ends of each gas discharge GDT one capacitance C of parallel connection.
Further, solid discharge pipe unit 23 include multiple solid discharging tube groups 231, solid discharge pipe unit 23 it is more
A solid discharging tube group 231 is parallel with one another.Solid discharging tube group 231 includes multiple solid discharging tube TSS.Solid discharging tube group
231 multiple solid discharging tube TSS are connected in series with.Or in other embodiments, solid discharging tube group 231 only includes one admittedly
Body discharge tube TSS.The resistance to flow valuve of surging protection circuit can be improved by multiple solid discharging tube groups 231 in parallel.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiment.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, even these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
The above is the specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, any ripe
It knows those skilled in the art in the technical scope disclosed by the present invention, various equivalent modifications can be readily occurred in or replaces
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (8)
1. a kind of surging protection circuit, which is characterized in that including：
Differential mode surge protective unit, for being connect respectively with firewire and zero curve；
Common mode carrying out surge protection unit, including varistor unit, gas discharge pipe unit and solid discharge pipe unit, the pressure
Quick resistance unit for being connect respectively with firewire and zero curve, the gas discharge pipe unit respectively with the varistor unit
And the solid discharge pipe unit connection, the solid discharge pipe unit ground connection；Wherein, the gas discharge pipe unit includes
At least one gas-discharge tube, a both ends capacitance in parallel for the gas-discharge tube；The solid discharge pipe unit includes at least
One solid discharging tube.
2. surging protection circuit according to claim 1, which is characterized in that the differential mode surge protective unit includes first
Varistor, first varistor with firewire and zero curve for connecting respectively.
3. surging protection circuit according to claim 1, which is characterized in that the varistor unit includes second pressure-sensitive
Resistance and third varistor, second varistor and third varistor be connected in series with after for be connected to firewire and
Between zero curve, the gas discharge pipe unit is connected to the connecting node of second varistor and third varistor.
4. surging protection circuit according to claim 1, which is characterized in that the gas discharge pipe unit includes multiple gas
Multiple gas-discharge tubes of body discharge tube, the gas discharge pipe unit are connected in series with.
5. surging protection circuit according to claim 1, which is characterized in that the solid discharge pipe unit includes multiple solid
Multiple solid discharging tubes of body discharge tube, the solid discharge pipe unit are connected in series with.
6. surging protection circuit according to claim 1, which is characterized in that the solid discharge pipe unit includes multigroup phase
Mutually solid discharging tube group in parallel, the solid discharging tube group includes at least one solid discharging tube.
7. surging protection circuit according to claim 6, which is characterized in that the solid discharging tube group includes multiple solids
Multiple solid discharging tubes of discharge tube, the solid discharging tube group are connected in series with.
8. surging protection circuit according to claim 1, which is characterized in that the surging protection circuit further includes insurance policy
Member, the security unit include the first fuse and the second fuse, and first fuse is used to be set to firewire, described
Second fuse is used to be set to zero curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009489.3A CN108808649A (en) | 2018-08-31 | 2018-08-31 | A kind of surging protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009489.3A CN108808649A (en) | 2018-08-31 | 2018-08-31 | A kind of surging protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108808649A true CN108808649A (en) | 2018-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811009489.3A Pending CN108808649A (en) | 2018-08-31 | 2018-08-31 | A kind of surging protection circuit |
Country Status (1)
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| CN (1) | CN108808649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601162A (en) * | 2019-09-12 | 2019-12-20 | 深圳瓦特智汇科技有限公司 | Common mode surge protection circuit |
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| CN201393063Y (en) * | 2009-02-02 | 2010-01-27 | 瑞侃电子(上海)有限公司 | Discharge protector |
| CN201733087U (en) * | 2010-06-07 | 2011-02-02 | 华为终端有限公司 | Protection circuit and protection system of direct current (DC) port |
| CN204230885U (en) * | 2014-11-25 | 2015-03-25 | 上海琪瑞电气照明有限公司 | A kind of Surge Protector of LED lamp |
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| CN206585323U (en) * | 2017-03-23 | 2017-10-24 | 菲尼克斯亚太电气（南京）有限公司 | Circuit board through-flow power supply surge protection device greatly |
| CN207625289U (en) * | 2017-11-06 | 2018-07-17 | 东莞市阿甘半导体有限公司 | A kind of AC power surge protective device and electronic equipment |
| CN208638029U (en) * | 2018-08-31 | 2019-03-22 | 茂硕科技有限公司 | A kind of surging protection circuit |
-
2018
- 2018-08-31 CN CN201811009489.3A patent/CN108808649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201393063Y (en) * | 2009-02-02 | 2010-01-27 | 瑞侃电子(上海)有限公司 | Discharge protector |
| CN201733087U (en) * | 2010-06-07 | 2011-02-02 | 华为终端有限公司 | Protection circuit and protection system of direct current (DC) port |
| CN204230885U (en) * | 2014-11-25 | 2015-03-25 | 上海琪瑞电气照明有限公司 | A kind of Surge Protector of LED lamp |
| CN106655138A (en) * | 2016-12-30 | 2017-05-10 | 广东百圳君耀电子有限公司 | Surge protection circuit |
| CN206585323U (en) * | 2017-03-23 | 2017-10-24 | 菲尼克斯亚太电气（南京）有限公司 | Circuit board through-flow power supply surge protection device greatly |
| CN207625289U (en) * | 2017-11-06 | 2018-07-17 | 东莞市阿甘半导体有限公司 | A kind of AC power surge protective device and electronic equipment |
| CN208638029U (en) * | 2018-08-31 | 2019-03-22 | 茂硕科技有限公司 | A kind of surging protection circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601162A (en) * | 2019-09-12 | 2019-12-20 | 深圳瓦特智汇科技有限公司 | Common mode surge protection circuit |
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Effective date of registration: 20220708 Address after: No.1061, xilizongbai Road, Nanshan District, Shenzhen, Guangdong 518000 Applicant after: SHENZHEN MOSO POWER ELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 518000 4th floor, Santai Industrial Park, Songbai 1061, Xili street, Nanshan District, Shenzhen, Guangdong Province Applicant before: MAOSHUO TECHNOLOGY Co.,Ltd. |