However, the high permeability of the ferrite makes it unstable at high temperatures, and saturates easily. It is suitable for applications such as DC to DC converters, magnetics amplifiers, etc. It must be noted that driving ferrites with excessive current may cause permanent damage to the core. Ferrites are widely used as attenuators of unwanted high frequency signals. They are typically available as beads, split cores, flat ribbon core and toroidal cores.
Ferrite tiles are also available for use in anechoic chambers.
Another application of ferrites are in transformers, inverters and inductors in the 5KHz to 100 KHz range. It is cheaper than tape wound cores and are used in applications where high flux density and high temperature stability are not critical. For high power application, use tape wound core as saturating core and ferrite core as output transformers. Ferrite cores can be gapped to avoid saturation under DC bias conditions. These cores are manufactured by using different steel grades with different widths and thickness, wound in circular manner.