HIGH POWER FULL BRIDGE INDUCTION HEATING COOKER FOR MAGNETIC AND NON-MAGNETIC LOADS

摘要

PURPOSE: A magnetic and non-magnetic full bridge induction heating cooker is provided to output a plurality of resonant loads by using one switch. CONSTITUTION: A smoothing section(101) increases a power factor of an input power supply. A switch(102) is alternatively switched according to a plurality of switching signals and outputs a voltage from the smoothing section(100) at a time division. A load selecting switch(104) performs a switching operation according to the first control signal. The first and second heaters(106,108) selectively receive and are resonant the voltage from the smoothing section(101) according to switching of the switch(102) and the load selecting switch(104), and selectively heat a plurality of heating plates in response to the second and third control signals to a magnetic or non-magnetic mode.