Abstract: An apparatus (100) for generating a high voltage or high field strength and a component (200) for generating a high voltage or high field strength are disclosed. A means (20) that is provided in a defined area (23) of the cylindrical and dielectric housing (11) or the sleeve (202) of the component (200). The means (20) ensures that, in a space (15) of the defined area (23), between the piezoelectric transformer (1) and an inner wall (14) of the dielectric housing (11), an essentially symmetrical field distribution (16) prevails. Even with an external influence (80), the field distribution (16) is influenced in such a way that an ignition field strength in space (15) of the defined area (23) is avoided.

Abstract: A device for producing a non-thermal atmospheric pressure plasma and an active space including such a device are disclosed. In an embodiment a device includes a first housing, in which a piezoelectric transformer is arranged and a second housing, in which a control circuit is arranged, the control circuit configured to apply an input voltage to the piezoelectric transformer, wherein the first housing comprises a coating configured to eradicate irritant gases.

Abstract: A plasma generator is disclosed. In an embodiment a plasma generator includes a piezoelectric transformer subdivided into an input region and an output region in a longitudinal direction, wherein the piezoelectric transformer comprises an output-side end face facing away from the input region, wherein the plasma generator comprises a passive load arranged permanently in front of the output-side end face, and wherein the plasma generator is configured to generate non-thermal atmospheric-pressure plasma.

Abstract: A device for producing a non-thermal atmospheric-pressure plasma are a method for frequency control of a piezoelectric transformer are disclosed. In an embodiment a device includes a piezoelectric transformer, an activating circuit configured to apply an AC voltage at an activating frequency to the piezoelectric transformer as an input voltage and a field probe configured to measure a field strength of an electric field produced by the piezoelectric transformer, wherein the activating circuit is configured to adapt the activating frequency based on the measurement results of the field probe such that a field strength is maximized.

Abstract: A device and a method for improving combustion are disclosed. In an embodiment the device includes a combustion chamber including at least one combustion chamber inlet for feeding in fuel or air or the fuel/air mixture, a reactor chamber connected upstream of the combustion chamber, the reactor chamber comprising a plasma generator, wherein the plasma generator is a piezoelectric transformer configured to operate with a low voltage and a control apparatus for the plasma generator, wherein the device is configured in such a way that even before a start of an actual combustion process at least one gaseous component in the reactor chamber is enriched with radicals and ions by the plasma generator.

Abstract: The invention relates to an assembly for treating wounds and to a hand held unit for treating wounds. The assembly and the hand held unit comprise a device for producing a plasma and/or an excited gas or gas mixture by means of a piezoelectric transformer, which is housed together with a circuit board in a housing of the device, and the assembly comprises an expansion element. A control circuit, to which the piezoelectric transformer is electrically connected, is realized on the circuit board. A second end of the expansion element surrounds a wound region to be treated. A first end of the expansion element is detachably connected to the housing of the device at the opening of the housing. The produced plasma and/or excited gas or gas mixture thus enters the expansion element from the opening of the housing.

Abstract: Disclosed is a system for reducing germs by means of plasma. To this end, a piezoelectric transformer is associated with a dielectric film. The peripheral edge of the dielectric film encloses an area to be sterilized, a cavity being formed thereby. A high-voltage end of the piezoelectric transformer is facing a side of the dielectric film facing away from the cavity. The plasma is ignited within the cavity.