ZXY EE22 High Frequency Ferrite Core Power Transformer Product Overview The ZXY EE22 High Frequency Ferrite Core Power Transformer is a vertical PCB mount switching power supply transformer professionally designed for SMPS (Switching Mode Power Supply) systems. Featuring high-quality high-permeability ferrite core material, this EE22 series transformer offers low core loss, high saturation magnetic flux density, and excellent high-frequency stability, making it ideal for