Ferrite Core Transformers
Ferrite cores are pressure molded ceramic structures of various shapes, made by mixing iron oxides with oxides or carbonates of metal such as nickel, magnesium, or zinc. The cores are pressed into shapes then fired in a kiln and machined as needed to meet various operational requirements.
Manganese-Zinc type ferrite core transformers are used for a wide variety of communication and power applications such as switching power supplies, filters, converters and inverters, adjustable inductors, and other high frequency applications up to 1,000 KHz.
Nickel-Iron-Molybdenum (MMP) type power core transformers, though more expensive, are the preferred choice for frequencies below 300 KHz. Applications include high Q filters, resonant circuits, RFI filters, low loss inductors for switch mode power supplies, switching regulators, and noise filters.
Ferrites have low eddy current losses over a wide frequency range, high permeability, and excellent temperature stability.
Custom Magnetics typically produces ferrite core transformers up to 3 KW at 50 KHz and up to 9 KW at 250 KHz. Typical frequencies range from 1KHz up to 1 MHz.
Ferrite cores are available in many shapes including E, EC, EP, ETD, PC (Pot), PQ, RM, RS (Slab), Rods, TC (toroidal), and U. Typical sizes produced at Custom Magnetics range from 1/8" cube to 4" cube. Various standard mounting styles are available including PCB pin mounting and surface mounting. Tape/Reel packaging is also available.