An electric working machine comprising: a motor; a rectifier circuit configured to rectify an AC power inputted from an AC power supply and to output a rectified power, the AC power fluctuating periodically; a capacitor configured to be charged by the rectified power outputted from the rectifier circuit and to smooth the rectified power; a series switching element, which is a switching element coupled in series with the capacitor; a resistive element coupled in parallel with the series switching element; a drive circuit configured to drive the motor based on a power smoothed by the capacitor; a peak voltage value acquirer (42, 38) configured to acquire a peak voltage value, which is a maximum absolute value of a voltage of the AC power; and a capacitor voltage value acquirer (42, 38) configured to acquire a capacitor voltage value, which is a value of a charging voltage across the capacitor, characterized in that: the electric working machine further comprising a controller configured to bring the series switching element into conduction in a case where the AC power is inputted to the rectifier circuit and where a specified conducting condition based on the peak voltage value acquired by the peak voltage value acquirer is satisfied; and the conducting condition comprises a condition that a difference between the peak voltage value acquired by the peak voltage value acquirer (42, 38) and the capacitor voltage value acquired by the capacitor voltage value acquirer (42, 38) is smaller than or equal to a difference threshold value. a motor; a rectifier circuit configured to rectify an AC power inputted from an AC power supply and to output a rectified power, the AC power fluctuating periodically; a capacitor configured to be charged by the rectified power outputted from the rectifier circuit and to smooth the rectified power; a series switching element, which is a switching element coupled in series with the capacitor; a resistive element coupled in parallel with the series switching element; a drive circuit configured to drive the motor based on a power smoothed by the capacitor; a peak voltage value acquirer (42, 38) configured to acquire a peak voltage value, which is a maximum absolute value of a voltage of the AC power; and a capacitor voltage value acquirer (42, 38) configured to acquire a capacitor voltage value, which is a value of a charging voltage across the capacitor, characterized in that: the electric working machine further comprising a controller configured to bring the series switching element into conduction in a case where the AC power is inputted to the rectifier circuit and where a specified conducting condition based on the peak voltage value acquired by the peak voltage value acquirer is satisfied; and the conducting condition comprises a condition that a difference between the peak voltage value acquired by the peak voltage value acquirer (42, 38) and the capacitor voltage value acquired by the capacitor voltage value acquirer (42, 38) is smaller than or equal to a difference threshold value. the electric working machine further comprising a controller configured to bring the series switching element into conduction in a case where the AC power is inputted to the rectifier circuit and where a specified conducting condition based on the peak voltage value acquired by the peak voltage value acquirer is satisfied; and the conducting condition comprises a condition that a difference between the peak voltage value acquired by the peak voltage value acquirer (42, 38) and the capacitor voltage value acquired by the capacitor voltage value acquirer (42, 38) is smaller than or equal to a difference threshold value.