Soft magnetic materials are those materials that are easily magnetised and demagnetised. They are used primarily to enhance and/or channel the flux produced by an electric current. Soft magnetic materials are used extensively in power electronic circuits, as voltage and current transformers, saturable reactors, magnetic amplifiers, inductors, and chokes. These magnetic devices may be required to operate at only 50/60 Hz, or at frequencies down to dc or over 1 MHz. 更多
