Industry News

What are the common types of communication ports？

A transformer is a device that transforms AC voltage, current and impedance. When an AC current is passed through the primary coil, an AC magnetic flux is generated in the iron core (or magnetic core), so that a voltage (or current) is induced in the secondary coil.

RJ45 refers to a physical interface, which is generally used for Ethernet access. The common network access methods are RJ45 ports, such as the network port of the computer, the network port of the switch, the router, and the information module you said. To put it bluntly, the interface that can only be inserted into the 8-core RJ45 crystal head can be called RJ45 port.

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Generally, there is a device behind the RJ45 port, which is black cuboid. After checking the description of this device, the internal structure is something similar to a transformer. Judging from the schematic diagram of the device, this device seems to be used to filter out common mode interference. At the same time, I also found a problem: I made an RJ45 adapter board, and after adding a network transformer mentioned above between the two RJ45 connectors, I found that the computer could not recognize it. Why?

The order of the RJ45 plug rj45 jack modular

Gigabit Ethernet has perfect standards, good compatibility and good performance-price ratio. As more and more new network technologies are applied to Gigabit Ethernet, Gigabit Ethernet has brought vigorous development opportunities. We have entered the civilian era of Gigabit Ethernet. Yu Bing, vice president of technology of Shenzhen Jizhao Communication Company, said that rapid market changes and user needs have put forward higher requirements for Gigabit Ethernet equipment, and the development of new technologies that adapt to market changes and application needs is a reliable guarantee for the rapid growth of Gigabit Ethernet.

RJ45 usually refers to standardized by IEC (60)603-7, using 8 positions (8-pin) modular jack or plug defined by international connector standards, so RJ45 connector is also known as 8P8C crystal head or crystal head, and the crystal head is male. RJ45 network interface is widely used in LAN and ADSL broadband Internet users network equipment between the network cable (called five line or twisted pair) connection.