Difference between common mode inductance and differential mode inductance | GETWELL

What is the difference between common mode Choke and differential mode inductance?Gvey professional inductor manufacturer to say briefly.

Common mode Choke, also known as Common mode Choke, is often used to filter Common mode EMI signals in switching power supplies of computers.In board card design, common-mode inductor also plays the role of EMI filter, which is used to suppress the electromagnetic wave emitted by high-speed signal line.

Differential mode inductance is a kind of inductance which can resist high frequency interference of differential mode, also called differential mode choke coil.There are 3 kinds of core materials for differential mode inductors.The cost per unit volume of Fe-Si-Al magnetic powder core is the lowest, so it is most suitable for making civil differential mode inductors.The price of Fe-Ni 50 and Fe-Ni Mo magnetic powder core is much higher than that of Fe-Si Al magnetic powder core, which is more suitable for military use and some occasions with high volume and performance requirements.

Difference between common mode inductance and differential mode inductance

1.Common mode inductance winding is usually double-wire bidirectional;Differential mode inductors are wound in one direction.

2.The filter inductor that suppresses common-mode interference is called common-mode inductor;The filter inductor that suppresses differential mode interference is called differential mode inductor.

3.The common mode inductance of the two groups of coils with the same number of coils, the same diameter of wires and the opposite winding in the same core is the same;Differential mode inductance is a coil wound around a core.

4.Common mode signal: two identical new numbers are generated on the zero line and the fire line respectively;Differential mode signal: suitable for use in the same signal circuit.

5.Common mode inductance characteristics: because two groups of coils on the same core are wound in opposite directions, so the core is not afraid of saturation.High conductance ferrite material is the most widely used magnetic core material in the market.

Above is common mode choke and differential mode inductance difference, hope can help you.We are a professional inductor manufacturer from China, welcome to consult!