The Ethernet transformer has multiple functions in the communication system. It mainly includes signal transmission, impedance matching, clutter suppression, electrical isolation and high-voltage isolation.

Signal transmission and impedance matching
The Ethernet transformer uses the principle of electromagnetic induction. It transfers the signal from the primary coil to the secondary coil to achieve signal transmission.
In addition, it can match different levels. This ensures the correct transmission of signals between different devices.
Clutter suppression and signal enhancement
The network transformer uses its unique winding structure-a combination of differential mode inductors and common mode inductors. This can effectively reduce the interference from common mode and differential mode signals.
It also improves the transmission waveform and strengthens the signal. This also means that the transmission distance and stability of the signal can be improved.
Electrical isolation and high-voltage isolation
The network transformer can isolate the DC component of the PHY and RJ45 ends. It does this by using electromagnetic signal propagation. This helps prevent interference from outside circuits.
At the same time, it can also build an isolation barrier between Ethernet and external circuits. This can enhance the system's anti-interference ability and protect the device from high voltage.
Application scenarios
Ethernet transformers are commonly used in digital business equipment. This includes high-performance digital switches and SDH/ATM transmission devices.
In summary, Ethernet transformers play a vital role in communication systems. Through its unique design and working principle, it significantly improves the transmission quality, stability and security of signals.