High Quality Content by WIKIPEDIA articles! An induction heater is a key piece of equipment used in all forms of induction heating. Typically an induction heater operates at either medium frequency (MF) or radio frequency (RF) ranges. Three main components form the basis of a modern induction heater including the power unit (power inverter), the work head (transformer) and the coil (inductor). Induction heating is a non contact method of heating a conductive body by utilising a strong magnetic field. Supply (mains) frequency 50/60 Hz induction heaters incorporate a coil directly fed from the electricity supply, typically for lower power industrial applications where lower surface temperatures are required.