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A transformer is a device with two or more coupled windings used to convert a quantity of electric energy at one voltage to and equal quantity at another voltage. Switchmodes Transformers (Switchers) are very flexible and can be used in many applications. Switchers are used in a wide variety of industries such as telecommunications, biomedical, and aerospace. In these industries they make up the bulk of the communication and power application transformers.
Toroidal inductor offer is a lower EMI signature than any other inductor type. A toroidal inductor that’s fully wound to 360 degrees is very symmetrical, which results in an almost complete magnetic field cancellation outside of its coil. A toroidal inductor with a circular core cross-section performs better in this situation than a toroidal inductor with a rectangular cross-section, yet both are still far superior to bobbin or axial lead wound inductors.
