Removable knob switch device and induction heating cooker using knob switch
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United States of America Patent
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Mar 5, 2024
Grant Date -
Jul 29, 2021
app pub date -
Jun 11, 2019
filing date -
Jul 13, 2018
priority date (Note) -
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Abstract
The present disclosure relates to an induction heating device comprising: a heating coil provided in a main body; a knob switch, detachable from and attachable to a knob area formed on one surface of the main body, for adjusting a heating power of the heating coil by rotation when attached to the knob area; a resonance detecting unit for outputting a frequency pulse corresponding to an impedance inflection point that varies according to a degree of rotation of the knob switch; and a controller for controlling the heating power of the heating coil according to the frequency pulse.
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