Patent ID: 8655204

Claim:
An induction heating device comprising: a resonance circuit including an exciting coil and a resonance capacitor, the exciting coil applying magnetic flux to a heated body, the resonance capacitor being connected to the exciting coil in parallel; a switching unit that turns on and off a high-frequency current flowing through the switching unit; a temperature detector that detects a temperature of the heated body; a power amount detector that detects a power amount at the exciting coil; a turned-on time setting unit that sets a turned-on time duration of the switching unit; a timing generation unit that generates a signal indicating a timing when a voltage between both ends of the switching unit is zero; and a timing setting unit that sets a turned-on timing of the switching unit based on the signal generated by the timing generation unit, and wherein the switching unit remains on for the turned-on time duration set by the turned-on time setting unit, and the switching unit is turned off when the turned-on time duration elapses.