A Flyback transformer differs from other true transformers in that it temporarily stores energy that it gets from the voltage and current. The energy from the s is stored in a magnetic field to be released to the outputs at a slightly later time. The Flyback transformer performs a kickback action to transform the s to a needed output voltage and current. Typically, a Flyback transformer operates at frequencies from *0 KHz to **0 KHz.

Given these frequencies, ferrite cores are the core of choice for such transformers, especially in discontinuous mode operations. Ferrite cores are available in several different geometries and are custom gaped based on the requirements of the application. Transformers of different wattage can use ferrite cores from really small geometries like E*6 and P*1 Potcores up to very large U*4 and U***6 cores.

To ensure the consistent performance of high voltage Flyback transformers, their windings are encapsulated with high-quality insulation systems such as epoxy compounds and silicone based compounds.