CN202159972U - Signal lightning protection device - Google Patents
Signal lightning protection device Download PDFInfo
- Publication number
- CN202159972U CN202159972U CN2011202097821U CN201120209782U CN202159972U CN 202159972 U CN202159972 U CN 202159972U CN 2011202097821 U CN2011202097821 U CN 2011202097821U CN 201120209782 U CN201120209782 U CN 201120209782U CN 202159972 U CN202159972 U CN 202159972U
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- CN
- China
- Prior art keywords
- protection circuit
- output port
- proof device
- input port
- secondary protection
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a signal lightning protection device, which comprises an input port, a primary protective circuit, a secondary protective circuit and an output port and is characterized in that the input port is directly connected with the output port through a lead; the primary protective circuit and the secondary protective circuit are in parallel connection to the input port/the output port directly, and the secondary protective circuit is jointly formed by an inductance element or/and a resistor and a protective element together. The signal lightening protection device can be applied to protection of broadband signals, has the advantages of being wide in frequency band, small in attenuation and reliable in protective properties, and solves the problem of protection and attenuation of the broadband signals.
Description
Technical field
The utility model relates to a kind of surge protection device of communication equipment signaling interface, particularly a kind of broadband signal lightning protection device.
Background technology
Lightning protection device is claimed surge protector (SPD, Surge Protective Devices) again, is to be installed on device port, is used for the device that various lightning currents and overvoltage etc. are protected.Existing siganl thunder-proof device generally adopts the secondary protectiving scheme; Referring to shown in Figure 1; Comprise the two-stage protection circuit: elementary protection circuit generally is made up of gas discharge tube, piezo-resistance etc.; The thunderbolt energy that can release higher, secondary protection circuit adopt transient voltage suppressor (TVS) or solid discharging tube (TSS) etc. that residual voltage is reduced.Wherein, elementary protection circuit and secondary protection circuit, start prior to second level protection circuit to guarantee first order protection circuit or/and resistor L comes decoupling through inductance element, prevent that secondary protective circuit from damaging because relieving capacity is limited.The shortcoming of this scheme is: if adopt the inductance element decoupling, can produce very high attenuation to high frequency signals transmitted, cause high-frequency signal normally to pass through; If adopt the resistor decoupling, the pressure drop meeting on the resistor causes the signal attenuation transmitted.
The utility model content
The purpose of the utility model is to above deficiency, and a kind of siganl thunder-proof device that can be applicable to the broadband signal protection is provided, and solves the protection and the attenuation problem of broadband signal.
Based on above-mentioned purpose; The utility model provides a kind of siganl thunder-proof device; Comprise input port, elementary protection circuit, secondary protection circuit, output port; Be characterized in: input port directly is connected through lead with output port, and elementary protection circuit and secondary protection circuit are directly parallel on input port/output port, secondary protection circuit by inductance element or/and resistor and protective element constitute jointly.
Elementary protection circuit described in this siganl thunder-proof device is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor (TVS) or solid discharging tube (TSS) or discharge air-gap or said elements.
The described protective element of secondary protection circuit in this siganl thunder-proof device is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor (TVS) or solid discharging tube (TSS) or discharge air-gap or said elements.
The described inductance element of secondary protection circuit in this siganl thunder-proof device is not limited to the combination of inductance or magnetic bead or resistor or said elements or/and resistor comprises.
The utility model is because on the basis of original siganl thunder-proof device; Adopted input port and output port through lead directly be connected, elementary protection circuit and secondary protection circuit is directly parallel on input port/output port, secondary protection circuit is made up of inductive element and/or resistance element and protective element jointly structure; Siganl thunder-proof device is possessed through bandwidth, little, the barrier propterty reliable characteristics of decay; When thunderbolt occurs; The maximum output voltage of output port is lower than the maximum voltage that can be born by protective circuit, thereby realizes overvoltage protection.
Specify the structure and the operation principle of the utility model below in conjunction with accompanying drawing:
Description of drawings
Accompanying drawing 1 is the lightning protection device structural representation of existing employing secondary protectiving scheme;
Accompanying drawing 2 is siganl thunder-proof device structural representations of the utility model;
Embodiment
As shown in Figure 2; The described siganl thunder-proof device of the utility model; Constitute by signal input port, elementary protection circuit, secondary protection circuit, output port; Input port directly is connected through lead with output port, and elementary protection circuit and secondary protection circuit are directly parallel on input port/output port, secondary protection circuit by inductive element or/and resistor and protective element constitute jointly.Wherein, elementary protection circuit is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor (TVS) or solid discharging tube (TSS) or discharge air-gap or said elements; The described protective element of secondary protection circuit is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor (TVS) or solid discharging tube (TSS) or discharge air-gap or said elements; The described inductance element of secondary protection circuit is not limited to the combination of inductance or magnetic bead or resistor or said elements or/and resistor comprises.
Front end string at equipment has under the situation of the described siganl thunder-proof device of the utility model; When producing the surge overvoltage because of thunder and lightning or other reasons; When surpassing the discharge voltage of the described siganl thunder-proof device of the utility model; Siganl thunder-proof device can be in the extremely short time and the earth conducting, powerful surge current is introduced the earth, thereby protected the equipment that is connected with the siganl thunder-proof device output not to be compromised.
The utility model can also carry out some variations on the basis of the above, such as: other elements such as series diode, rectifier bridge in secondary protection circuit constitute secondary protection circuit jointly; Perhaps remove output port, the mode of the described circuit of the utility model through PCB layout is connected with other circuit, get up to use with other combination of circuits.
In a word, any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (4)
1. a siganl thunder-proof device comprises input port, elementary protection circuit, secondary protection circuit, output port; It is characterized in that: input port directly is connected through lead with output port, and elementary protection circuit and secondary protection circuit are directly parallel on input port/output port, secondary protection circuit by inductance element or/and resistor and protective element constitute jointly.
2. siganl thunder-proof device according to claim 1 is characterized in that, its described elementary protection circuit is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor or solid discharging tube or discharge air-gap or said elements etc.
3. siganl thunder-proof device according to claim 1; It is characterized in that the protective element in its described secondary protection circuit is the combination of gas discharge tube or piezo-resistance or transient voltage suppressor or solid discharging tube or discharge air-gap or said elements.
4. siganl thunder-proof device according to claim 1 is characterized in that, the inductance element in its described secondary protection circuit is or/and resistor comprises the combination of inductance or magnetic bead or resistance or said elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202097821U CN202159972U (en) | 2011-06-21 | 2011-06-21 | Signal lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202097821U CN202159972U (en) | 2011-06-21 | 2011-06-21 | Signal lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159972U true CN202159972U (en) | 2012-03-07 |
Family
ID=45767595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202097821U Expired - Fee Related CN202159972U (en) | 2011-06-21 | 2011-06-21 | Signal lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159972U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050959A (en) * | 2013-01-05 | 2013-04-17 | 深圳顺络电子股份有限公司 | Surge protection circuit for signal circuit |
| CN103248029A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Surge protector with simple structure |
| CN103248030A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | MP4 player with interference prevention function |
| CN103368163A (en) * | 2012-03-30 | 2013-10-23 | 深圳市威尔利实业有限公司 | A surge protection circuit and a 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 |
-
2011
- 2011-06-21 CN CN2011202097821U patent/CN202159972U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368163A (en) * | 2012-03-30 | 2013-10-23 | 深圳市威尔利实业有限公司 | A surge protection circuit and a surge protector |
| CN103050959A (en) * | 2013-01-05 | 2013-04-17 | 深圳顺络电子股份有限公司 | Surge protection circuit for signal circuit |
| CN103050959B (en) * | 2013-01-05 | 2015-03-11 | 深圳顺络电子股份有限公司 | Surge protection circuit for signal circuit |
| CN103248029A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Surge protector with simple structure |
| CN103248030A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | MP4 player with interference prevention function |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20130621 |