Common mode inductor is a passive component used to suppress common mode noise, usually used in electronic circuits to eliminate common mode noise in the circuit. Common mode noise refers to interference signals that appear on two or more signal pins at the same time, usually caused by power supply interference, poor grounding, electromagnetic radiation, etc.
The working principle of common-mode inductors is to use their high inductance value to effectively suppress the propagation of common-mode noise by blocking the current in the common-mode signal path. The main features include:
1. High inductance: With a higher inductance value, it can effectively isolate common mode noise.
2. Wide bandwidth: It has a wider frequency response range, suitable for common mode noise suppression at different frequencies.
3. Small size: Small size makes it easy to integrate into the circuit board.
4. High sensitivity: Highly sensitive to common mode noise and can accurately suppress noise signals.
Common-mode inductors are widely used in consumer electronics, communication equipment, industrial control systems and other fields to improve the anti-interference ability of circuits and ensure accurate signal transmission and stability. Common common-mode inductors include magnetic ring common-mode inductors , coil common-mode inductors, etc. The specific choice depends on the actual application scenario and requirements.