Abstract: The invention relates to a high voltage source to be coupled to an electrode arrangement for a dielectric barrier discharge plasma treatment. It has a high voltage transformer device including a primary and secondary inductor coupled via a magnetic circuit. A feed circuit including a power capacitor, the power capacitor coupled with the primary inductor and a first controllable conductor in series. A controller is arranged to intermittent switching of the first controllable conductor in on- and off-states; and a second controllable conductor is coupled in parallel to the primary windings; the controller arranged to switch the second controllable conductor to a conducting on-state when the first controllable conductor is in an on-state to short the resonating current in the primary inductor.

Abstract: An electrode arrangement is described that is configured to be coupled to a high voltage source for a dielectric barrier discharge plasma treatment of an irregularly three-dimensionally shaped surface of an electrically conducting body. The three-dimensionally shaped surface is used as a counter electrode. A first planar electrode is coupled to the high voltage source via a first lead, fitted to the object to be treated and brought in contact with a dielectric. A second electrode is contacted with the surface to be treated as reference electrode. The second electrode is provided in an edge portion that is circumferential to the first planar electrode and configured to be coupled to a reference voltage source via a second lead. An isolating cover layer covers the electrode and a third electrode covers the isolating cover layer as a ground electrode.

Abstract: The invention relates to an electrode arrangement to be coupled to a high voltage source for a dielectric barrier discharge plasma treatment of an irregularly three-dimensionally shaped surface of an electrically conducting body, which surface is used as a counter electrode. A first electrode is coupled to the high voltage source via a first lead, fitted to the object to be treated and brought in contact with a dielectric. A second electrode is contacted with the surface to be treated as reference electrode, said second electrode provided in an edge portion being circumferential to the first electrode and to be coupled to a reference voltage source via a second lead. An isolating cover layer covers the electrode and a third electrode covers said isolating cover layer as a ground electrode.