CN208638022U - A kind of surging protection circuit - Google Patents
A kind of surging protection circuit Download PDFInfo
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- CN208638022U CN208638022U CN201821292241.8U CN201821292241U CN208638022U CN 208638022 U CN208638022 U CN 208638022U CN 201821292241 U CN201821292241 U CN 201821292241U CN 208638022 U CN208638022 U CN 208638022U
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Abstract
The utility model embodiment discloses a kind of surging protection circuit, which includes differential mode surge protective unit and common mode carrying out surge protection unit.Differential mode surge protective unit with firewire and zero curve for connecting respectively；Common mode carrying out surge protection unit includes varistor unit and solid discharge pipe unit；For connecting respectively with firewire and zero curve, solid discharge pipe unit connect and is grounded with varistor unit varistor unit；Solid discharge pipe unit includes at least one solid state discharge tube.Solid state discharge tube compares gas-discharge tube, have the characteristics that accurate conducting, quick response, surge absoption ability relatively by force, bi-directional symmetrical, high reliablity, the response time of solid state discharge tube is enabled to reach nanosecond rank, residual voltage very little, to can also ensure that the residual voltage of solid state discharge tube is smaller and meets the requirement for protecting lightning surge while selecting the biggish solid state discharge tube of discharge voltage to meet resistance to pressure request.
Description
Technical field
The utility model relates to carrying out surge protection technical field more particularly to a kind of surging protection circuits.
Background technique
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 occurred within only several hundred 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 be arranged in outdoor switch electricity
Source and LED drive power etc. are equipped with surging protection circuit.In the prior art, surging protection circuit usually selects gas discharge
Pipe is as protective device.Since the residual voltage of gas-discharge tube is higher, in order to meet the requirement of protection lightning surge, generally need
Select the lower gas-discharge tube of discharge voltage.However, the pressure resistance of safety regulation certification at present is more demanding.It is resistance in order to meet
Pressure request, it is desirable that select the biggish gas-discharge tube of discharge voltage.As it can be seen that in the surging protection circuit of the prior art, it is difficult to same
When meet protection lightning surge and require and the resistance to pressure request of safety.
Utility model content
The utility model embodiment proposes a kind of surging protection circuit, it is intended to solve existing surging protection circuit and be difficult to simultaneously
The problem of meeting the requirement that protection lightning surge requires and safety is pressure-resistant.
To solve the above-mentioned problems, the utility model embodiment proposes a kind of surging protection circuit, the carrying out surge protection electricity
Road includes:
Differential mode surge protective unit, for being connect respectively with firewire and zero curve；
Common mode carrying out surge protection unit, including varistor unit and solid discharge pipe unit；The varistor unit
For connecting respectively with firewire and zero curve, the solid discharge pipe unit connect and is grounded with the varistor unit；Institute
Stating solid discharge pipe unit includes at least one solid state discharge tube.
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.
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 with firewire for connecting and connecting with the solid discharge pipe unit, the third varistor
For connecting with zero curve and being connect with the solid discharge pipe unit.
Its further technical solution is that the solid discharge pipe unit includes a solid state discharge tube, the solid discharge
Pipe connect and is grounded with the varistor unit.
Its further technical solution is that the solid discharge pipe unit includes multiple solid state discharge tubes, multiple described solid
Body discharge tube is connected in series between the varistor unit and ground terminal.
Its further technical solution is that the solid discharge pipe unit includes that multiple groups are connected in parallel in the varistor
Solid state discharge tube group between unit and ground terminal, the solid state discharge tube group include at least one solid state discharge tube.
Its further technical solution is that the solid state discharge tube group includes multiple solid state discharge tubes, the solid discharge
Multiple solid state discharge tube TSS of pipe group are connected in series.
Its further technical solution is that the two sides of each solid state discharge tube are connected in parallel to a capacitor.
In the technical solution of the utility model, the solid discharge pipe unit of common mode carrying out surge protection unit includes that at least one is solid
Body discharge tube.Solid state discharge tube compares gas-discharge tube, has accurate conducting, quick response, surge absoption ability stronger, two-way
Symmetrically, the features such as high reliablity, the response time of solid state discharge tube is enabled to reach nanosecond rank, residual voltage very little, from
And it can also ensure that the residual of solid state discharge tube while selecting the biggish solid state discharge tube of discharge voltage to meet resistance to pressure request
It stays voltage smaller and meets the requirement for protecting lightning surge.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of schematic block diagram for surging protection circuit that the utility model embodiment 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 utility model embodiment proposes；
Fig. 4 is a kind of circuit diagram for surging protection circuit that another embodiment of the utility model proposes；And
Fig. 5 is a kind of circuit diagram for surging protection circuit that another embodiment of the utility model proposes.
Appended drawing reference
Differential mode surge protective unit 10；Common mode carrying out surge protection unit 20；Varistor unit 21；Solid discharge pipe unit
22；Solid state discharge tube group 221 and security unit 30.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes, and similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only that this is practical
Novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " 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, the presence or addition of element, component and/or its set.
It is also understood that specific merely for the sake of describing in this utility model embodiment term used in the description
The purpose of embodiment and be not intended to limit the utility model embodiment.Such as in the utility model embodiment specification and appended power
As used in sharp claim, other situations unless the context is clearly specified, otherwise " one " of singular, "one"
And "the" is intended to include plural form.
Referring to Fig. 1, the utility model embodiment 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 and solid discharge pipe unit 22.
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 and solid discharge pipe unit 22.Common mode carrying out surge protection
Unit 20 is used to absorb the common mode surge between firewire L and the earth.Wherein, varistor unit 21 for respectively with firewire L with
And zero curve N connection, solid discharge pipe unit 22 connect and are grounded with varistor unit 21.
In the utility model embodiment, solid discharge pipe unit 22 includes at least one solid state discharge tube, solid state discharge tube
Compared to gas-discharge tube, there are accurate conducting, quick response, surge absoption the ability relatively spies such as strong, bi-directional symmetrical, reliability height
Point.
Referring to fig. 2, the schematic diagram changed for residual voltage v with response time t.The response time of solid state discharge tube is
Nanosecond rank, and the response time of gas-discharge tube be microsecond rank.As seen from the figure, the residual voltage V2 of solid state discharge tube is remote
Less than the residual voltage V1 of gas-discharge tube.
In the utility model embodiment, the solid discharge pipe unit 22 of common mode carrying out surge protection unit 20 is solid including at least one
Body discharge tube, since the response time of solid state discharge tube can reach nanosecond rank, so that the residual voltage of solid state discharge tube is very
It is small, to can also ensure that solid state discharge tube while selecting the biggish solid state discharge tube of discharge voltage to meet resistance to pressure request
Residual voltage it is smaller and meet protection lightning surge requirement.
Referring to Fig. 3, for a kind of circuit diagram for surging protection circuit that an embodiment of the present invention proposes, You Tuke
Know, which includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode
Carrying out surge protection unit 20 includes varistor unit 21 and solid discharge pipe unit 22.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connection.
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, and described the
For connecting with firewire L and connecting with solid discharge pipe unit 22, third varistor RV3 is used for and 0 two varistor RV2
It line N connection and is connect with solid discharge pipe unit 22.
Further, solid discharge pipe unit 22 includes a solid state discharge tube TSS, solid state discharge tube TSS and pressure-sensitive electricity
It hinders the connection of unit 21 and is grounded.
Referring to fig. 4, a kind of circuit diagram of the surging protection circuit proposed for another embodiment of the utility model, You Tuke
Know, which includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode
Carrying out surge protection unit 20 includes varistor unit 21 and solid discharge pipe unit 22.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connection.
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
For connecting with firewire L and connecting with solid discharge pipe unit 22, third varistor RV3 is used to connect with zero curve N quick resistance RV2
It connects and is connect with solid discharge pipe unit 22.
Further, solid discharge pipe unit 22 includes multiple solid state discharge tube TSS, multiple solid state discharge tube TSS series connection
It is connected between varistor unit 21 and ground terminal.By connecting, surging protection circuit is can be improved in multiple solid state discharge tube TSS
Pressure voltage.
Further, it is connected in parallel to a capacitor C in the two sides of each solid state discharge tube TSS, thus may make each solid
The voltage at the both ends discharge tube TSS is more uniform, and voltage is avoided to concentrate on the both ends of a certain solid state discharge tube TSS and put the solid
Fulgurite TSS is burnt out.
Referring to Fig. 5, for a kind of circuit diagram for surging protection circuit that another embodiment of the utility model proposes, You Tuke
Know, which includes differential mode surge protective unit 10, common mode carrying out surge protection unit 20 and security unit 30.Common mode
Carrying out surge protection unit 20 includes varistor unit 21 and solid discharge pipe unit 22.
Differential mode surge protective unit 10 includes the first varistor RV1, the first varistor RV1 for respectively with firewire L
And zero curve N connection.
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, and described the
For connecting with firewire L and connecting with solid discharge pipe unit 22, third varistor RV3 is used for and 0 two varistor RV2
It line N connection and is connect with solid discharge pipe unit 22.
Further, solid discharge pipe unit 22 includes that multiple groups are connected in parallel between varistor unit 21 and ground terminal
Solid state discharge tube group 221, solid state discharge tube group 221 include at least one solid state discharge tube TSS.In solid state discharge tube group 221
When including multiple solid state discharge tube TSS, multiple solid state discharge tube TSS of solid state discharge tube group 221 are connected in series.
By multiple groups solid state discharge tube group 221 in parallel, the current carrying capability of surging protection circuit can be improved.
It should be noted that in the present embodiment, it can be connected in parallel a capacitor in the two sides of each solid state discharge tube TSS, by
This may make the voltage at the both ends each solid state discharge tube TSS more uniform, and voltage is avoided to concentrate on the two of a certain solid state discharge tube TSS
It holds and burns out solid state discharge tube TSS.
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, reference can be made to the related descriptions of other embodiments.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.In this way, even these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
The above is specific embodiment of the present utility model, but the protection scope of the utility model is not limited to
This, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in various etc.
The modifications or substitutions of effect, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this is practical new
The protection scope of type should be subject to the protection scope in claims.
Claims (9)
1. a kind of surging protection circuit characterized by comprising
Differential mode surge protective unit, for being connect respectively with firewire and zero curve；
Common mode carrying out surge protection unit, including varistor unit and solid discharge pipe unit；The varistor unit is used for
It is connect respectively with firewire and zero curve, the solid discharge pipe unit connect and is grounded with the varistor unit；It is described solid
Body electric discharge pipe unit includes at least one solid state discharge tube.
2. 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.
3. 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.
4. 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 with firewire for connecting and connecting with the solid discharge pipe unit
It connects, the third varistor with zero curve for connecting and connecting with the solid discharge pipe unit.
5. surging protection circuit according to claim 1, which is characterized in that the solid discharge pipe unit includes a solid
Discharge tube, the solid state discharge tube connect and are grounded with the varistor unit.
6. surging protection circuit according to claim 1, which is characterized in that the solid discharge pipe unit includes multiple solid
Body discharge tube, multiple solid state discharge tubes are connected in series between the varistor unit and ground terminal.
7. surging protection circuit according to claim 1, which is characterized in that the solid discharge pipe unit include multiple groups simultaneously
Connection is connected to the solid state discharge tube group between the varistor unit and ground terminal, and the solid state discharge tube group includes at least one
A solid state discharge tube.
8. surging protection circuit according to claim 7, which is characterized in that the solid state discharge tube group includes multiple solids
Multiple solid state discharge tubes of discharge tube, the solid state discharge tube group are connected in series.
9. the surging protection circuit according to claim 6 or 8, which is characterized in that the two sides of each solid state discharge tube
It is connected in parallel to a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821292241.8U CN208638022U (en) | 2018-08-09 | 2018-08-09 | A kind of surging protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821292241.8U CN208638022U (en) | 2018-08-09 | 2018-08-09 | A kind of surging protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208638022U true CN208638022U (en) | 2019-03-22 |
Family
ID=65741823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821292241.8U Active CN208638022U (en) | 2018-08-09 | 2018-08-09 | A kind of surging protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208638022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767829A (en) * | 2018-08-09 | 2018-11-06 | 茂硕科技有限公司 | A kind of surging protection circuit |
-
2018
- 2018-08-09 CN CN201821292241.8U patent/CN208638022U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767829A (en) * | 2018-08-09 | 2018-11-06 | 茂硕科技有限公司 | A kind of surging protection circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220714 Address after: No.1061, xilizongbai Road, Nanshan District, Shenzhen, Guangdong 518000 Patentee 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 Patentee before: MAOSHUO TECHNOLOGY Co.,Ltd. |