An electrostatic precipitator circuit has an input terminal supplied DC voltage, an output terminal connected to a precipitating capacitor, a storage capacitor connected between ground potential and the input terminal, and a recovery capacitor whose one electrode is applied with ground potential. The circuit further includes a current path switching unit having a common terminal and first and second switch terminals to be connected to the common terminal, the common terminal being connected to a non-ground electrode of the storage capacitor. The circuit further includes a first current path having a serial circuit of an inductor and a diode for connecting the first switch terminal to the output terminal, a second current path having a serial circuit of an inductor and a diode for connecting the output terminal to the non-ground electrode of the recovery capacitor, and a third current path having a serial circuit of an inductor and a diode for connecting the non-ground electrode of the recovery capacitor to the second switch terminal.