Common-mode inductance

Common-mode inductance

8 month ago

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Xuzhou Jiuli Electronics Co., Ltd

 9 month year

Product details

The functions of common-mode inductors

What are the functions of common-mode inductors?

The size of common-mode inductors will directly affect the performance of EMC. Its main function is to isolate common-mode signals and attenuate external common-mode interference, thereby reducing the impact on the power supply. It can also attenuate internal common-mode signals and reduce the impact on the power grid.

However, a large common-mode inductor has a good suppression effect on low-frequency disturbances, but may deteriorate on high frequencies, while a small inductance has a poor suppression effect on low-frequency disturbances.

Usually, we often see X capacitors, Y capacitors and a common-mode inductor added to the input end of the power module. The capacitor has low impedance to the signal and plays the role of bypassing and decoupling the signal. The inductor has high impedance to the signal and plays the role of reflecting and absorbing high-frequency interference signals.

The interference between the two power lines to the ground is called common-mode interference, and the interference between the two power lines is called differential-mode interference. When the inductor and capacitor are combined into a filter, the filtering effect is better, and the frequency bands in which the inductor and capacitor work will also be different. The Y capacitor plays the role of filtering out common-mode interference, and the X capacitor mainly plays the role of short-circuiting the signal, reducing the path of the differential-mode signal, and thus reducing the oscillation caused by parasitic parameters in the circuit. High-frequency emission.

Our main products are Differential Mode Inductor、I-type Inductor、Common Mode Inductor and so on.

Please contact us if necessary. Look forward to your sincere cooperation.

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Xuzhou Jiuli Electronics Co., Ltd

 Audited supplier

9 month

Address: Xuzhou, China

Main Product: Electronic Transformer, High-frequency Transformer , Switching Power Supply Transformer, Differential Mode Inductor, I-type Inductor, Common Mode Inductor

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