Multi-Ability Ferrimagnetic Semiconductor Module for Use as a Protection and Supersonic Environmental Monitor in the Thyristor System

The ferrimagnetic semiconductor (FMS) is one kind of ferrite belonging to the n-type semiconductors with a ferromagnetic property below Curie temperature. The FMS is a multi-ability device, which in effect adds the functions of a magnetostrictive vibrator, a thermistor, a semiconductor capacitor and a temperature-sensitive magnetic core to a switching element. Techniques for applying the FMS module to protection and supersonic monitor sensors in the thyristor system are discussed.