Gigabit LAN (Local Area Network) lightning arrester with PoE (Power on Ethernet) function
A lightning protector and functional technology, which is applied in the direction of emergency protection circuit devices, electrical components, circuit devices, etc. for limiting overcurrent/overvoltage, and can solve problems such as inability and lack of PoE signal lines
Inactive Publication Date: 2011-02-16
SHENZHEN BENCENT ELECTRONICS CO LTD
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Problems solved by technology
[0004] refer to figure 1 At present, the PoE lightning protection is mainly to connect the first lightning protection module 12 and the second lightning protection module 13 between the PoE control chip 14 and the RJ45 interface 11, but the PoE lightning protection in this way can only be used for the 100M network at present. For the Gigabit network, since the 8 signal lines of the RJ45 interface 11 in the Gigabit network must be used for signal transmission at the same time, there is no signal line for PoE alone, and the above method cannot be used for equipment lightning protection
Therefore, the current Gigabit network equipment does not have PoE and PoE lightning protection
Method used
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[0019] The gigabit network lightning protector with PoE function provided by the present invention uses a transformer for signal transmission to connect the primary side of the transformer winding and the center tap of the secondary side with inductance to realize the PoE function of the gigabit network. Furthermore, a ceramic gas discharge tube is connected to the center tap of the primary side of the transformer to realize the PoE lightning protection of the gigabit network.
[0020] refer to figure 2 , propose an embodiment of the gigabit network lightning protection device with PoE function of the present invention, including a transformer connected to the signal line of the gigabit network, the transformer includes four windings T1, T2, T3 and T4, wherein at least two primary sides of the windings and the secondary side center tap are connected through an inductor.
[0021] In this embodiment, the transformer includes four windings T1, T2, T3 and T4, and the center taps...
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The invention discloses a gigabit LAN (Local Area Network) lightning arrester with a PoE (Power on Ethernet) function, comprising a transformer connected with the gigabit LAN through signal lines. The transformer comprises four windings, wherein the central taps of the primary sides and the secondary sides of at least two windings are connected through inductors. The gigabit LAN (Local Area Network) lightning arrester with the PoE (Power on Ethernet) function further comprises ceramic gas discharge tubes, the center taps of the primary sides of the windings of the transformer are grounded through the ceramic gas discharge tubes. The gigabit LAN (Local Area Network) lightning arrester with the PoE (Power on Ethernet) function can be used for transmitting signals and simultaneously supplying PoE for the gigabit LAN, and further protecting gigabit LAN equipment from lightning.
Description
technical field [0001] The invention relates to the field of lightning protection, in particular to a gigabit network lightning protection device with PoE function. Background technique [0002] Power over Ethernet (PoE) refers to 100 [0003] It is to transmit data signals for some IP-based terminals such as IP phones, wireless LAN access points or network cameras without any changes to the existing Ethernet Cat.5 cabling infrastructure. This type of equipment provides DC power supply technology. [0004] refer to figure 1 At present, the PoE lightning protection is mainly to connect the first lightning protection module 12 and the second lightning protection module 13 between the PoE control chip 14 and the RJ45 interface 11, but the PoE lightning protection in this way can only be used for the 100M network at present. For the Gigabit network, since the 8 signal lines of the RJ45 interface 11 in the Gigabit network must be used for signal transmission at the same time, ...
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IPC IPC(8): H02H9/06
Inventor 李亚文叶毓明何家朋张以警王久
Owner SHENZHEN BENCENT ELECTRONICS CO LTD