Abstract: A plasma applicator comprising an electrotechnical core for generating a cold atmospheric pressure or low-pressure plasma for the treatment of human and/or animal and/or technical surfaces, wherein the electrotechnical core has a side facing the surface to be treated and a side facing away from the surface to be treated and comprises the following layers, arranged above one another, starting from the side facing the surface to be treated, a first insulation layer, a first electrode structure which is provided with a first contact for establishing electrical contact between the first electrode structure and a power supply unit and which is grounded during operation, a second insulation layer, which is embodied to galvanically isolate the first electrode structure and a second electrode structure from one another, a second electrode structure which is provided with a second contact for establishing electrical contact between the second electrode structure and a power supply unit and which is driven during opera

Abstract: An electrotechnical core for generating a cold atmospheric pressure or low-pressure plasma for the treatment of human, animal, or technical surfaces. The core has a side facing the surface and a side facing away from the surface and comprises the following layers, starting from the side facing the surface: a first insulation layer, a first electrode structure with a first contact between the first electrode structure and a power supply unit, a second insulation layer to galvanically isolate the first electrode structure and a second electrode structure from one another, wherein the second electrode structure is driven during operation by a voltage signal sufficient to ignite a plasma, a third insulation layer to galvanically isolate the second electrode structure from a third electrode structure, wherein the third electrode structure grounds the third electrode structure during operation.