Patent ID: 8443754

Claim:
An electrostatic coating apparatus comprising: a paint sprayer having a rotary atomizing head on a front end side thereof for spraying a paint which is supplied to said rotary atomizing head toward a coating object, a housing member formed of an insulating material and adapted to hold said paint sprayer at a front side thereof, a primary external electrode located at an outer peripheral side of said housing member, a secondary external electrode located closer to said rotary atomizing head than is said primary external electrode, a first high voltage source electrically connected to said primary external electrode for applying a first high voltage to said primary external electrode, and a second high voltage source electrically connected to said secondary external electrode for applying a second high voltage to said secondary external electrode, wherein said second high voltage source includes a pulse generator circuit configured to provide said second high voltage to said secondary external electrode as a pulsating voltage which varies intermittently in a range whose maximum value is lower than said first high voltage.