CN105896503A - Surge protection device - Google Patents
Surge protection device Download PDFInfo
- Publication number
- CN105896503A CN105896503A CN201410614875.0A CN201410614875A CN105896503A CN 105896503 A CN105896503 A CN 105896503A CN 201410614875 A CN201410614875 A CN 201410614875A CN 105896503 A CN105896503 A CN 105896503A
- Authority
- CN
- China
- Prior art keywords
- surge protection
- protection circuit
- mov3
- mov2
- piezoresistor
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a surge protection device. The surge protection device comprises a first surge protection circuit and a second surge protection circuit. The first surge protection circuit comprises piezoresistors MOV1, MOV2 and MOV3 and a gas discharge tube GDT. The piezoresistor MOV2 and the piezoresistor MOV3 are connected in series and then are connected in parallel with the piezoresistor MOV1 so as to connect to an input terminal of a power supply. One end of the gas discharge tube GDT is grounded and the other end is connected to a joint point where the piezoresistor MOV2 and the piezoresistor MOV3 are connected. The second surge protection circuit comprises suppression diodes TVS1, TVS2 and TVS3. The suppression diodes TVS2 and TVS3 are connected in series and then are connected in parallel with the suppression diode TVS1. A decoupling device is arranged between the first surge protection circuit and the second surge protection circuit. The surge protection device adopts a secondary protection circuit and achieves a time-delay effect so that the MOVs carry out action firstly and then the TVSs carry out action.
Description
Technical field
The invention belongs to surge protector technical field, be specifically related to a kind of surge protection device.
Background technology
Safety be a kind of basic social demand, and this demand along with social economy reform deep
Enter and develop and the raising of living standards of the people and growing.Organization Behavior thinks the need of people
Seeking Truth is with different levels, be constantly growth and to high-level development, when surviving, this primary demand obtains
After meeting, safety and stability is the demand necessarily led to.This " safely " is the concept of broad sense, it
Comprise work, the stablizing of income, healthy guarantee etc., closer in the concept of public safety, but
The safety of life, the particularly safety of lives and properties is most important content.We are being in one
In the epoch of individual change, these epoch will bring unprecedented view of time and space, information view, valency to us
Value is seen.Social structure, economic activity, Information Communication, interpersonal communication etc. all can occur unprecedented
Change, at public safety field it would appear that new concept, new demand.Along with safety China
The iterative method built, the application of monitoring device and be fit into the universalness stage, and subject to
The long distance control system of indirect lightning strike is badly in need of installing simple-to-maintain lightning protection device easily.Monitoring system master
Will be made up of front end, transmission and terminal three part, thunderbolt destruction approach is divided into direct lightning strike, lightning wave
Invade and lightning induction.The most simple guarantor to power supply of common lightning protection device that oneself exists in the market
Protecting, when thunder and lightning is attacked, holding wire and control line are all by seriously damaged, and its ground path meeting
Transmission generation to vision signal has a strong impact on.Prior art discloses a kind of single channel video lightning protection
Device, including route one-level repid discharge pipe, Ultrafast recovery diode discharge circuit and piezo-resistance group
Becoming, the two ends of described one-level repid discharge pipe are respectively by resistance and Ultrafast recovery diode electric discharge electricity
The two ends on road connect, and described one-level repid discharge pipe earth terminal is by the ungrounded end of piezo-resistance and ground
Connecting, concrete, i.e. its video lightning protection circuit is by one-level repid discharge pipe GAPI, Ultrafast recovery
Diode discharge circuit and piezo-resistance R3 composition, the two of described one-level repid discharge pipe GAPI
End is connected with the two ends of Ultrafast recovery diode discharge circuit by resistance R1, resistance R2 respectively,
Described one-level repid discharge pipe GAPI earth terminal is by the ungrounded end of piezo-resistance R3 with ground even
Connect.Its Ultrafast recovery diode discharge circuit is reverse by two Ultrafast recovery diode D1 and D2
A diode D5 is passed through reverse with two other Ultrafast recovery diode D3 and D4 after parallel connection
Parallel circuit in series.Although this technical scheme solves its problem proposed, but structure is the most multiple
Miscellaneous, relatively costly, it is necessary to be improved.
Summary of the invention
It is an object of the invention to solve above-mentioned technical problem and a kind of simple in construction and lightning protection are provided
Effective surge protection device.
For achieving the above object, the present invention is by the following technical solutions:
A kind of surge protection device, including the first anti-surge protection circuit and the second surging prevention
Circuit, described first anti-surge protection circuit include piezo-resistance MOV1, MOV2, MOV3 and
Gas-discharge tube GDT, after described piezo-resistance MOV2, MOV3 series connection with piezo-resistance MOV1 also
Being connected in power input, described gas-discharge tube GDT one end ground connection, the other end is connected on described pressure
At the node that quick resistance MOV2, MOV3 are connected, described second anti-surge protection circuit includes pressing down
Diode TVS1, TVS2, TVS3 processed, wherein, described suppression diode TVS2, TVS3 connect
Rear described suppression diode TVS1 is in parallel, described first anti-surge protection circuit and the second wave resistance
Gush and between protection circuit, be equipped with decoupling device, including inductance L1, L2, described inductance L1,
L2 is in parallel, and the two ends of described inductance L1, L2 connect with power input and output respectively.
Surge protection device of the present invention uses safe secondary protection circuit, and the first order absorbs bigger surge,
The second level absorbs residual voltage, and middle employing inductance component, as decoupling device, serves time-lag action,
Ensure that MOV is than the action of TVS elder generation.
Accompanying drawing explanation
Fig. 1 show the circuit structure of a kind of surge protection device that the embodiment of the present invention provides and shows
It is intended to.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features and the advantage of the present invention are further described, but
The invention is not limited in listed embodiment.
Referring to Fig. 1, this illustrates the embodiment of the present invention and provides the knot of a kind of surge protection device
Structure, for convenience of description, illustrate only the part relevant with the embodiment of the present invention.
Shown in Figure 1, a kind of surge protection device, including the first anti-surge protection circuit with
And second anti-surge protection circuit, described first anti-surge protection circuit include piezo-resistance MOV1,
MOV2, MOV3 and gas-discharge tube GDT, with pressure after described piezo-resistance MOV2, MOV3 series connection
Quick resistance MOV1 is also connected in power input, described gas-discharge tube GDT one end ground connection, separately
At the node that one end is connected on described piezo-resistance MOV2, MOV3 is connected, described second Anti-surging
Protection circuit includes suppressing diode TVS1, TVS2, TVS3, wherein, described suppression diode
After TVS2, TVS3 series connection, described suppression diode TVS1 is in parallel, described first surging prevention electricity
It is equipped with decoupling device between road and the second anti-surge protection circuit, including inductance L1, L2,
Described inductance L1, L2 is in parallel, the two ends of described inductance L1, L2 respectively with power input
And output connects.
Surge protection device of the present invention uses safe secondary protection circuit, and the first order absorbs bigger surge,
The second level absorbs residual voltage, and middle employing inductance component, as decoupling device, serves time-lag action,
Ensure that MOV is than the action of TVS elder generation.
The above is only the preferred embodiment of the present invention, it is noted that for the art
Those of ordinary skill for, under the premise without departing from the principles of the invention, it is also possible to make some
Improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (1)
1. a surge protection device, it is characterised in that include the first anti-surge protection circuit and second
Anti-surge protection circuit, described first anti-surge protection circuit includes piezo-resistance MOV1, MOV2, MOV3
And gas-discharge tube GDT, with piezo-resistance MOV1 coupling after described piezo-resistance MOV2, MOV3 series connection
At power input, described gas-discharge tube GDT one end ground connection, the other end is connected on described piezo-resistance
At the node that MOV2, MOV3 are connected, described second anti-surge protection circuit include suppress diode TVS1,
TVS2, TVS3, wherein, described suppression diode TVS1 after described suppression diode TVS2, TVS3 series connection
Parallel connection, is equipped with decoupler between described first anti-surge protection circuit and the second anti-surge protection circuit
Part, including inductance L1, L2, described inductance L1, L2 is in parallel, and the two ends of described inductance L1, L2 are divided
Do not connect with power input and output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614875.0A CN105896503A (en) | 2014-11-05 | 2014-11-05 | Surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614875.0A CN105896503A (en) | 2014-11-05 | 2014-11-05 | Surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896503A true CN105896503A (en) | 2016-08-24 |
Family
ID=56697896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614875.0A Pending CN105896503A (en) | 2014-11-05 | 2014-11-05 | Surge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896503A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786469A (en) * | 2017-02-22 | 2017-05-31 | 庆安集团有限公司 | A kind of lightning protection circuit of ARINC429 buses |
| CN107508385A (en) * | 2017-08-18 | 2017-12-22 | 武汉泰可电气股份有限公司 | One kind utilizes the faradic electricity getting system of overhead ground wire and method |
| CN108923405A (en) * | 2018-08-14 | 2018-11-30 | 中国电子科技集团公司第三十八研究所 | A kind of captive balloon key valve safety control |
| CN110391647A (en) * | 2018-04-13 | 2019-10-29 | 上银科技股份有限公司 | The electric protective device of mechanical action equipment |
| CN111527662A (en) * | 2017-10-26 | 2020-08-11 | 恩德莱斯和豪瑟尔欧洲两合公司 | Electronic field device |
| CN112332390A (en) * | 2020-08-04 | 2021-02-05 | 深圳市海洋王照明工程有限公司 | Surge protector and LED low dome lamp |
| CN112952785A (en) * | 2021-01-27 | 2021-06-11 | 杭州爱科科技股份有限公司 | Surge protection circuit |
-
2014
- 2014-11-05 CN CN201410614875.0A patent/CN105896503A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786469A (en) * | 2017-02-22 | 2017-05-31 | 庆安集团有限公司 | A kind of lightning protection circuit of ARINC429 buses |
| CN107508385A (en) * | 2017-08-18 | 2017-12-22 | 武汉泰可电气股份有限公司 | One kind utilizes the faradic electricity getting system of overhead ground wire and method |
| CN111527662A (en) * | 2017-10-26 | 2020-08-11 | 恩德莱斯和豪瑟尔欧洲两合公司 | Electronic field device |
| US11233392B2 (en) | 2017-10-26 | 2022-01-25 | Endress+Hauser Se+ Co. Kg | Electronic field device with transceiver protecting circuit |
| CN111527662B (en) * | 2017-10-26 | 2022-08-12 | 恩德莱斯和豪瑟尔欧洲两合公司 | Electronic field device |
| CN110391647A (en) * | 2018-04-13 | 2019-10-29 | 上银科技股份有限公司 | The electric protective device of mechanical action equipment |
| CN110391647B (en) * | 2018-04-13 | 2021-09-24 | 上银科技股份有限公司 | Electrical protection device for mechanically operated equipment |
| CN108923405A (en) * | 2018-08-14 | 2018-11-30 | 中国电子科技集团公司第三十八研究所 | A kind of captive balloon key valve safety control |
| CN108923405B (en) * | 2018-08-14 | 2019-12-06 | 中国电子科技集团公司第三十八研究所 | captive balloon key valve safety control device |
| CN112332390A (en) * | 2020-08-04 | 2021-02-05 | 深圳市海洋王照明工程有限公司 | Surge protector and LED low dome lamp |
| CN112332390B (en) * | 2020-08-04 | 2023-12-15 | 深圳市海洋王照明工程有限公司 | Surge protector and LED low ceiling lamp |
| CN112952785A (en) * | 2021-01-27 | 2021-06-11 | 杭州爱科科技股份有限公司 | Surge protection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105896503A (en) | Surge protection device | |
| CN201018277Y (en) | Three-in-one lightning protection device dedicated for video monitoring system | |
| CN103515942B (en) | The protection circuit of communication interface | |
| CN201440607U (en) | Anti lightning circuit, power device and household appliances | |
| CN204030579U (en) | A kind of interface of protecting aircraft communication | |
| CN206559039U (en) | LED street lamp arrester circuit | |
| CN202014093U (en) | Novel two-in-one multifunctional lightning protection device | |
| CN202190050U (en) | Direct-current over-voltage and over-current protective circuit and direct-current power supply type electronic product | |
| CN202444559U (en) | Video optical transceiver | |
| CN202535065U (en) | Comprehensive surge protector of monitoring system | |
| CN201854022U (en) | Signal control surge protection circuit | |
| CN203553923U (en) | An intelligent protection circuit of a CAN transceiver | |
| CN202488126U (en) | Novel single-circuit video surge protection device | |
| CN105896502A (en) | Surge protector used for twisted pair | |
| CN202221891U (en) | Surge protector having photoelectric isolation function | |
| CN105896501A (en) | Video monitoring surge protector | |
| CN105896504A (en) | Computer network surge protection device | |
| CN202997553U (en) | Signal lightning protection device | |
| CN103259248A (en) | Safety grid | |
| CN211720271U (en) | USB charging wire short circuit self-recovery device | |
| CN203312789U (en) | Network-signal lightning arrester | |
| CN202488125U (en) | Novel single-power supply lightning protection device | |
| CN102761116B (en) | Triple suppression circuit of power grid abnormity | |
| CN104052017A (en) | Short message gateway allowing short-circuit protection | |
| CN204597472U (en) | A kind of lightning protection circuit for electronic equipment RS232 signaling interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |
|
| WD01 | Invention patent application deemed withdrawn after publication |