Abstract: There is provided a drive circuit for a dielectric barrier discharge device. The drive circuit comprises: a power supply connectable in use across a dielectric discharge gap, the dielectric discharge gap providing a capacitance; and an inductance between the power supply and the dielectric discharge gap when connected thereby establishing a resonant tank in use, wherein power is provided in use to the tank in pulse-trains and only during a pulse-train, a pulse frequency of each pulse-train being tuneable in use to a resonant frequency of the tank, power provided by each pulse-train charging and maintaining the tank to a threshold at which discharge ignition occurs, discharge ignition events per pulse-train being limited to a maximum number based on the drive circuit being arranged in use to prohibit each pulse-train transferring power to the resonant tank after the maximum number has occurred.

Abstract: There is provided a dielectric barrier electrical discharge apparatus, system and method. The apparatus comprises at least two electrodes arranged in use to provide at least one anode and at least one cathode an electric field thereby being establishable therebetween, the at least two electrodes being separated to allow a fluid to be present between the electrodes in use. At least one of the electrodes has a dielectric portion connected to at least part of said electrode, and a sub-macroscopic structure is connected to at least one of the electrodes or dielectric portion.