Common mode and differential Inductors:

Please select from the following:

CA Series Common Mode Filter Chokes to filter in-phase supply line noise.
DM Series Differential Mode Toroids are designed for applications requiring a known inductance at various DC bias currents.
CA Series Common Mode Filter Chokes to filter in-phase supply line noise.
CP Series Noise Suppression Power Supply Plug with Cable.

What is a Common Mode Transformer?: 

A current compensated or common mode choke is one which is wired in such a way that the current in each winding produces opposing magnetic flux which cancel each other. The resultant flux is zero (or very nearly zero allowing for some degree of non-perfect coupling between windings). Therefore a current compensated choke is capable of carrying a high DC current without saturating. Noise which is common mode however, i.e. in phase on both lines, does not produce flux cancelation and is therefore attenuated. This is the basis of using common mode chokes as noise suppression devices. On the other hand, 'normal' or differential chokes are designed to support the full DC current, while providing a specific inductance, usually in energy storage applications in high frequency switching power supplies. 

>>Want to know more?- click here for a PDF with more Information on Current Mode Inductors 

 

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Transformer Request for Quote Updated 10 March 2002 12:00 AM