Network interface protection circuit and terminal equipment
A technology of network interface and protection circuit, applied in the field of electronics, can solve the problem of burning board parts
Inactive Publication Date: 2020-02-07
SHENZHEN WEIBU INFORMATION
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Problems solved by technology
[0004] In view of the above technical problems, the embodiment of the present invention provides a network interface protection circuit and terminal equipment to solve the problem that the existing high-level instantaneous abnormal voltage is directly added to the board end through the network interface, causing the board end parts to be burned
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts, all belong to the protection scope of the present invention.
[0030] see figure 1 , the terminal device provided by the embodiment of the present invention includes a mainboard, and the mainboard is provided with a network interface protection circuit 10, a network interface 20, and a network chip 30; the network interface protection circuit 10 is connected to the network interface 20 and the network chip 30, so The network interface protection circuit 10 converts the network signal output by the network chip 30 into a network data signal ...
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The embodiment of the invention discloses a network interface protection circuit and terminal equipment. The circuit comprises a main board, wherein a network interface, a network chip and a network interface protection circuit are arranged on the main board, the network interface protection circuit converts a network signal outputted by a network chip into a network data signal and transmits thenetwork data signal to the network interface, and the network interface protection circuit further converts a network voltage into a working voltage and outputs the working voltage to the network chipfor power supply so as to carry out anti-surge and anti-static protection. The network interface protection circuit can further carry out anti-surge and anti-static protection of an instantaneous abnormal voltage with a relatively high level, so a problem that the instantaneous abnormal voltage is directly applied to a board end through the network interface to cause burnout of board end parts can be solved.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a network interface protection circuit and terminal equipment. Background technique [0002] Due to the development of modern technology, network technology has been widely used in various fields, and computer network systems have been applied to various fields. Its network equipment has high integration, low overvoltage resistance, and is extremely sensitive to lightning electromagnetic pulses. The loss of computer network equipment caused by lightning and static electricity every year is difficult to estimate. Therefore, the design of the protection circuit of computer network equipment has become the top priority. The protection circuit is also the research direction of various motherboard designers, requiring stable performance and low cost. lower. [0003] At present, the traditional network interface voltage protection circuit includes: discharge gap, gas discharge t...
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IPC IPC(8): H02H9/04H02M1/14H04L12/10
CPCH02H9/041H02M1/14H04L12/10
Inventor 丁永波宋长春甘胜滨
Owner SHENZHEN WEIBU INFORMATION