Device for generating an atmospheric-pressure plasma

A device for generating an atmospheric-pressure plasma comprising:

• a piezoelectric transformer comprising an input region and an output region, wherein the input region is designed to convert an applied alternating voltage into a mechanical oscillation, wherein the output region is designed to convert a mechanical oscillation into a voltage, wherein the output region adjoins the input region in a longitudinal direction, and wherein the piezoelectric transformer comprises a first lateral face, a second lateral face, a third lateral face and a fourth lateral face;
• a first contact element fastened to the first lateral face of the piezoelectric transformer at a position that corresponds to one quarter of a length of the piezoelectric transformer;
• a second contact element fastened to the second lateral face of the piezoelectric transformer at a position that corresponds to one quarter of the length of the piezoelectric transformer, the contact elements being designed to apply the alternating voltage to the input region;
• and
• a holder, wherein the contact elements are connected to the holder by a form-fit connection in such a manner that a movement of the piezoelectric transformer in the longitudinal direction, relative to the holder is prevented,
• wherein the holder has a first support element and a second support element, on which the piezoelectric transformer is supported and which prevent a movement of the piezoelectric transformer in a direction perpendicular to the longitudinal direction,
• wherein the first support element is arranged in such a manner that it bears against the third lateral face of the piezoelectric transformer, in the longitudinal direction, at a position that corresponds to one quarter of the length of the piezoelectric transformer, and
• wherein the second support element is arranged in such a manner that it bears against the fourth lateral face of the piezoelectric transformer, in the longitudinal direction, at a position that corresponds to one quarter of the length of the piezoelectric transformer.