Common mode inductors are a very common inductor product with a wide range of applications. Common-mode inductors directly affect the stability of circuit operation and are an indispensable role in many electronic devices. So, do you know what role common-mode inductors play in circuits?
The main function of common-mode inductors in circuits is to suppress common-mode noise and improve the stability of the power supply system. Common-mode noise refers to noise that appears on both the positive and negative lines of the signal line or power line at the same time, which may cause problems such as circuit performance degradation, signal distortion, and interference with other devices.
Common-mode inductors are usually used in the following aspects:
1. Power filtering: Common-mode inductors are often used on power lines as part of power filters to reduce high-frequency common-mode noise. Common-mode inductors can suppress common-mode interference from power input to output, and can also prevent common-mode noise inside the circuit from propagating to the power line.
2. Signal transmission: In high-speed signal transmission lines (such as differential signal lines), common-mode inductors can suppress common-mode noise on signal lines and improve signal transmission quality and anti-interference capabilities.
3. Electromagnetic compatibility (EMC) optimization: Common-mode inductors can reduce electromagnetic interference (EMI) by suppressing common-mode noise, help circuits meet electromagnetic compatibility (EMC) requirements, and reduce interference with other electronic equipment.
4. Safety protection: Common-mode inductors can reduce common-mode interference caused by sudden voltage, lightning strikes, etc. in the circuit, and improve the safety and reliability of the circuit.
The function of common-mode inductors is to improve the performance of power and signal transmission lines by suppressing common-mode noise and interference, and enhance electromagnetic compatibility and system stability. When designing a circuit, selecting a suitable common-mode inductor according to actual needs can effectively improve the performance and reliability of the circuit.
Common mode inductors
Common mode choke
Coupled inductor RFT
Common mode filter
In simple terms, common mode inductors can effectively reduce the interference of external electromagnetic waves on the circuit and the electromagnetic radiation of the circuit to the outside world, which can ensure the integrity of data transmission and the stability of equipment operation.
This role of common mode inductors is fully reflected in the field of switching power supplies. Common mode inductors can effectively suppress the high-frequency noise generated by switching operations and effectively prevent it from being transmitted to other devices through the power line.
In addition to its application in the field of open-source power supplies, common mode inductors can be seen in network communications, audio and video equipment, security monitoring and other equipment.
In general, common mode inductors play an important protective role in the stability of circuit operation. When selecting common mode inductors, the functional requirements of the circuit for inductors should be fully considered, and then the inductors should be selected and tested.
