Common-mode inductance

Common-mode inductance

8 month ago

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Xuzhou Jiuli Electronics Co., Ltd

 10 month year

Product details

Introduction to common mode inductors

A common mode inductor, also called a common mode choke, is a coil with the same direction and the same number of turns wound on a closed magnetic ring.

Common-mode inductors can suppress common-mode interference, but have no inhibition on differential mode signal.

Working principle

When a differential mode current flows through a common mode inductor, two magnetic fields cancel each other out. If a common-mode interference signal flows through the coil, a mutually reinforcing magnetic field is generated between the two groups of coils, so that the entire coil presents a high resistance state to attenuate the interference signal.

A. When the normal current in the circuit flows through the common mode inductor, the current produces a reverse magnetic field in the inductor coil wound in the same phase and cancles each other out, and the normal signal current is mainly affected by the coil resistance (and a small amount of damping caused by leakage); Common-mode inductance

B. When there is a common mode current flowing through the coil, due to the homotropy of the common mode current, the magnetic field in the same direction will be generated in the coil and the inductance of the coil will be increased, so that the coil will show high impedance, resulting in strong damping effect, so as to attenuate the common mode current and achieve the purpose of filtering.

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Xuzhou Jiuli Electronics Co., Ltd

 Audited supplier

10 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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