Dryer and controlling method thereof

Abstract

A dryer is provided. The dryer includes an alternating current (AC) power supply configured to supply an input voltage, a rectifier configured to rectify the supplied input voltage, a power amplifier configured to amplify the rectified input voltage to provide an output voltage, a plurality of electrodes to which the output voltage is applied, a matching circuit, connected between the power amplifier and the plurality of electrodes, configured to correct a waveform of the output voltage provided from the power amplifier, memory storing instructions, and at least one processor, wherein the instructions, when executed by the at least one processor individually or collectively, cause the dryer to obtain a magnitude of the output voltage provided from the power amplifier, and detect a power value corresponding to the rectified input voltage, based on the magnitude of the output voltage provided from the power amplifier being less than or equal to a defined reference voltage.

Dependencies are inferred from the claim text.