An electrostatic precipitator including: a collecting electrode in a gas passage; a discharge electrode in the gas passage and separated by a gap from the collecting electrode; a power supply applying a voltage to the discharge electrode, wherein the voltage establishes an electric field between the...http://www.google.se/patents/US7704302?utm_source=gb-gplus-sharePatent US7704302 - Electrostatic precipitator having a spark current limiting resistors and method for limiting sparking
