Patent ID: 11903321
Assignee: TDK ELECTRONICS AG
Field: Chemical engineering (Chemistry)
Classification: CPC H | IPC H

Claim 34:
35. A device comprising:
a piezoelectric transformer;
a driver circuit configured to apply an input signal to the piezoelectric transformer;
evaluation electronics connected to the driver circuit; and
a field probe comprising a metallization forming a measurement point, at which the field probe is configured to determine a local field strength of an electric field produced by the piezoelectric transformer,
wherein the field probe is configured to measure the field strength of the electric field at the measurement point,
wherein the driver circuit is configured to adapt the input signal while taking into account measurement results of the field probe,
wherein the driver circuit is configured so that a power sufficient for an ignition of a nonthermal atmospheric pressure plasma is applied to an input region of the piezoelectric transformer only when a load is detected in front of a output end side,
wherein the evaluation electronics are configured to:
further process measurement values recorded by the field probe, and
detect the load arranged in front of the output end side of the piezoelectric transformer with aid of a change in the field strength, and

wherein the device is configured to produce the nonthermal atmospheric pressure plasma.