Induction heat cooking apparatus and method for controlling output level thereof

An induction heat cooking apparatus comprising:

• a rectifier that rectifies an input voltage to output a DC voltage;
• an inverter that switches the DC voltage outputted through the rectifier to generate an AC voltage;
• a first heating element operated by the AC voltage applied from the inverter;
• a second heating element connected in parallel to the first heating element, the second heating element being operated by the AC voltage applied from the inverter;
• and
• a switching signal generator that generates control signals for the inverter to control an operational state of each of the first and second heating elements according to a received operational mode signal,
• wherein the inverter includes a first switch, a second switch, and a third switch which are connected in series between a positive power terminal and a negative power terminal of the rectifier,
• wherein the switching signal generator includes a first pulse transformer and a second pulse transformer that controls the first to third switches of the inverter,
• wherein the first pulse transformer generates a control signal for operating the first and third switches, and the second pulse transformer generates a control signal for operating the second switch.