US Patent 7497893 Method of electrostatic acceleration of a fluid

A method for handling a fluid may be incorporated into the operation of, for example, a corona discharge device and an electric power supply. Such a corona discharge device typically includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. A relationship between alternating and direct (or constant, non-time varying) components of the voltage may be expressed as (Vac/Vdc)≦(Iac/Idc).