Is there a difference between common mode inductors and common mode choke coil ? Often hear someone ask this, the answer is yes. First look at the common mode inductance and choke is what?
Is there a difference between common mode inductors and chokes from common mode choke manufacturers ?
Common mode inductance is commonly used in computer switching power supply filter common mode electromagnetic interference signal. In the board design, the common mode inductor is also the role of EMI filtering, used to suppress the high-speed signal lines generated by electromagnetic radiation emitted outward. The choke coil is a common-mode interference suppression device with ferrite as the core, which is symmetrically wound on the same ferrite toroidal core by two coils of the same size and the same number of turns to form a four-terminal Device, for the common mode signal shows a large inductance has a inhibitory effect, and for the differential mode signal showing a small leakage inductance almost does not work. The use of choke coil in the balance line can effectively inhibit the common mode interference signal (such as lightning interference), and the normal transmission of the differential signal signal no effect.
The difference between them is: common mode inductance is two sets of coils, choke is a set of coils, choke is a kind of inductor, coil resistance is slightly higher or iron loss is large, in order to save its reactivity and its Ability to shock.
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