CN203491693U - Lightning protection circuit for router - Google Patents
Lightning protection circuit for router Download PDFInfo
- Publication number
- CN203491693U CN203491693U CN201320651575.0U CN201320651575U CN203491693U CN 203491693 U CN203491693 U CN 203491693U CN 201320651575 U CN201320651575 U CN 201320651575U CN 203491693 U CN203491693 U CN 203491693U
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- resistance
- electric capacity
- piezo
- circuit
- discharge tube
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Abstract
The utility model discloses a lightning protection circuit for a router. The circuit comprises six resistors, six capacitors, three voltage dependant resistors, three diodes, an optoelectronic coupler, a discharge tube and a transformer. The first end of the first voltage dependant resistor is connected with the first end of the first resistor and then connected with the positive voltage of the router. The second end of the first voltage dependant resistor is connected with the first end of the discharge tube. The circuit is a single-phase parallel connection anti-lightning surge circuit based on the voltage dependant resistors and the discharge tube. The circuit utilizes three voltage dependant resistors and a discharge tube to form a combined and symmetrical circuit with full protection of a common mode and a differential mode. The circuit allows the plurality of voltage dependant resistors to be in parallel connection to extend service lifetime of the circuit. When having a short circuit and are ineffective, the voltage dependant resistors is separated from the switch power supply, so that a fire is not caused and loss due to a lightning stroke is prevented.
Description
Technical field
The utility model relates to a kind of protective circuit, relates in particular to a kind of lightning-proof protection circuit for router.
Background technology
Router is the equipment that connects each local area network (LAN), wide area network in internet, and it can automatically be selected and set route according to the situation of channel, with optimal path, by the equipment of front and back order transmitted signal.At present router has been widely used in all trades and professions, the product of various different class become realize that various backbone networks innerly connect, main force that key internetworking and backbone network and the Internet interconnect business.To the security protection of router, be necessary, because when using router, there will be and be not related to for a long time the situation of closing router, but when thunderstorm weather, because router is in off-mode not, may be struck by lightning, initiation potential.
Utility model content
The purpose of this utility model provides a kind of lightning-proof protection circuit for router with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of lightning-proof protection circuit for router, comprise the first resistance to the six resistance, the first electric capacity to the six electric capacity, the first piezo-resistance to the three piezo-resistances, the first diode to the three diodes, photoelectrical coupler, discharge tube and transformer, the first end of described the first piezo-resistance is connected with the first end of described the first resistance and connects router cathode voltage, the second end of described the first piezo-resistance is connected with the first end of described discharge tube, the second end of described the first resistance respectively with the first end of described the second piezo-resistance, the first end of a winding of the first end of described the first electric capacity and described transformer is connected, the earth terminal ground connection of described discharge tube, the second end of described discharge tube is connected with the first end of described the 3rd piezo-resistance, the second end of described the 3rd piezo-resistance is connected with the first end of described the 5th electric capacity, the second end ground connection of described the 5th electric capacity, the second end of described the second piezo-resistance respectively with the second end of described the first electric capacity, the first end of described the 4th electric capacity, the first end of described the 3rd resistance, the emitter of described photoelectrical coupler, the negative pole of described photoelectrical coupler, ground connection after the first end of the first end of described the 4th resistance and described the 6th resistance is connected and is connected with router negative pole, the second end of described the 4th electric capacity respectively with the second end of described the 3rd resistance, the collector electrode of described photoelectrical coupler, the second end of a winding of described transformer is connected with the positive pole of described the first diode, the negative pole of described the first diode is connected with the first end of described the second electric capacity with the first end of described the second resistance respectively, the second end of described the second resistance is connected with the first end of described the 6th electric capacity with the second end of described the second electric capacity respectively, the second end ground connection of described the 6th electric capacity, the first end of the secondary winding of described transformer is connected with the positive pole of described the second diode, the second end of the secondary winding of described transformer is connected with the first end of described the 3rd electric capacity and ground connection, the negative pole of described the second diode respectively with the second end of described the 3rd electric capacity, the first end of described the 5th resistance is connected with the second end of described the 6th resistance, the second end of described the 5th resistance is connected with the negative pole of described the 3rd diode, the positive pole of described the 3rd diode is connected with the second end of described the 4th resistance and the positive pole of described photoelectrical coupler respectively.
The beneficial effects of the utility model are:
The utility model is for the lightning-proof protection circuit of router; parallel single-phase formula anti-lightning surge circuit based on piezo-resistance and discharge tube; adopt three piezo-resistances and a discharge tube to form combined type symmetric circuit; common mode, differential mode full guard; wherein adopt a plurality of piezo-resistances in parallel, increase the service life, separated with switching power circuit after piezo-resistance short-circuit failure; can not cause and catch fire, avoid the loss causing because of thunderbolt.
Accompanying drawing explanation
Fig. 1 is that the utility model is for the circuit diagram of the lightning-proof protection circuit of router.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is for the lightning-proof protection circuit of router, comprise that the first resistance R 1 is to the 6th resistance R 6, the first capacitor C 1 is to the 6th capacitor C 6, the first piezo-resistance RV1 to the three piezo-resistance RV3, the first diode D1 to the three diode D3, photoelectrical coupler OC, discharge tube F and transformer T, the first end of the first piezo-resistance RV1 is connected with the first end of the first resistance R 1 and connects router cathode voltage, the second end of the first piezo-resistance RV1 is connected with the first end of discharge tube F, the second end of the first resistance R 1 respectively with the first end of the second piezo-resistance RV2, the first end of a winding of the first end of the first capacitor C 1 and transformer T is connected, the earth terminal ground connection of discharge tube F, the second end of discharge tube F is connected with the first end of the 3rd piezo-resistance RV3, the second end of the 3rd piezo-resistance RV3 is connected with the first end of the 5th capacitor C 5, the second end ground connection of the 5th capacitor C 5, the second end of the second piezo-resistance RV2 respectively with the second end of the first capacitor C 1, the first end of the 4th capacitor C 4, the first end of the 3rd resistance R 3, the emitter of photoelectrical coupler OC, the negative pole of photoelectrical coupler OC, ground connection after the first end of the first end of the 4th resistance R 4 and the 6th resistance R 6 is connected and is connected with router negative pole, the second end of the 4th capacitor C 4 respectively with the second end of the 3rd resistance R 3, the collector electrode of photoelectrical coupler OC, the second end of a winding of transformer T is connected with the positive pole of the first diode D1, the negative pole of the first diode D1 is connected with the first end of the second capacitor C 2 with the first end of the second resistance R 2 respectively, the second end of the second resistance R 2 is connected with the first end of the 6th capacitor C 6 with the second end of the second capacitor C 2 respectively, the second end ground connection of the 6th capacitor C 6, the first end of the secondary winding of transformer T is connected with the positive pole of the second diode D2, the second end of the secondary winding of transformer T is connected with the first end of the 3rd capacitor C 3 and ground connection, the negative pole of the second diode D2 respectively with the second end of the 3rd capacitor C 3, the first end of the 5th resistance R 5 is connected with the second end of the 6th resistance R 6, the second end of the 5th resistance R 5 is connected with the negative pole of the 3rd diode D3, the positive pole of the 3rd diode D3 is connected with the positive pole of photoelectrical coupler OC with the second end of the 4th resistance R 4 respectively.
The utility model is as follows for the operation principle of the lightning-proof protection circuit of router:
Voltage on the second piezo-resistance RV2 is mainly from voltage between power supply, ground connection after the first piezo-resistance RV1 and the 3rd piezo-resistance RV3 connect with discharge tube F, it is mainly the indirect lightning strike surge current of releasing that the first piezo-resistance RV1 connects with gas discharge tube F, it is mainly the energy of releasing by signal port string that the 3rd piezo-resistance RV3 connects with discharge tube F, after the first piezo-resistance RV1 and the 3rd piezo-resistance RV3 short-circuit failure, discharge tube F can be separated with power circuit by it, can not cause the phenomenon of catching fire.
Claims (1)
1. the lightning-proof protection circuit for router, it is characterized in that: comprise the first resistance to the six resistance, the first electric capacity to the six electric capacity, the first piezo-resistance to the three piezo-resistances, the first diode to the three diodes, photoelectrical coupler, discharge tube and transformer, the first end of described the first piezo-resistance is connected with the first end of described the first resistance and connects router cathode voltage, the second end of described the first piezo-resistance is connected with the first end of described discharge tube, the second end of described the first resistance respectively with the first end of described the second piezo-resistance, the first end of a winding of the first end of described the first electric capacity and described transformer is connected, the earth terminal ground connection of described discharge tube, the second end of described discharge tube is connected with the first end of described the 3rd piezo-resistance, the second end of described the 3rd piezo-resistance is connected with the first end of described the 5th electric capacity, the second end ground connection of described the 5th electric capacity, the second end of described the second piezo-resistance respectively with the second end of described the first electric capacity, the first end of described the 4th electric capacity, the first end of described the 3rd resistance, the emitter of described photoelectrical coupler, the negative pole of described photoelectrical coupler, ground connection after the first end of the first end of described the 4th resistance and described the 6th resistance is connected and is connected with router negative pole, the second end of described the 4th electric capacity respectively with the second end of described the 3rd resistance, the collector electrode of described photoelectrical coupler, the second end of a winding of described transformer is connected with the positive pole of described the first diode, the negative pole of described the first diode is connected with the first end of described the second electric capacity with the first end of described the second resistance respectively, the second end of described the second resistance is connected with the first end of described the 6th electric capacity with the second end of described the second electric capacity respectively, the second end ground connection of described the 6th electric capacity, the first end of the secondary winding of described transformer is connected with the positive pole of described the second diode, the second end of the secondary winding of described transformer is connected with the first end of described the 3rd electric capacity and ground connection, the negative pole of described the second diode respectively with the second end of described the 3rd electric capacity, the first end of described the 5th resistance is connected with the second end of described the 6th resistance, the second end of described the 5th resistance is connected with the negative pole of described the 3rd diode, the positive pole of described the 3rd diode is connected with the second end of described the 4th resistance and the positive pole of described photoelectrical coupler respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651575.0U CN203491693U (en) | 2013-10-22 | 2013-10-22 | Lightning protection circuit for router |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651575.0U CN203491693U (en) | 2013-10-22 | 2013-10-22 | Lightning protection circuit for router |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203491693U true CN203491693U (en) | 2014-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320651575.0U Expired - Fee Related CN203491693U (en) | 2013-10-22 | 2013-10-22 | Lightning protection circuit for router |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203491693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986586A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Lightning-protection router |
-
2013
- 2013-10-22 CN CN201320651575.0U patent/CN203491693U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986586A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Lightning-protection router |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |