Common mode choke inductors (CMC) are used in switching power supplies and power supply circuits for eliminating AC line-conducted common mode noise across a wide range of frequencies.
The Advantages of Using Common Mode Choke Inductors
A CMC might be more expensive than a differential choke, but its functionality and reliability are unmatched. Here are more specific advantages of using common mode choke inductors:
- They are highly efficient, so they can handle much higher currents.
- They have a high inductance value, meaning EMI radiation is kept low.
- They offer an extensive frequency range.
- They can often solve noisy connections by suppressing or blocking high-frequency signals.