US Patent No. 10,772,182

DEVICE FOR PRODUCING A NON-THERMAL ATMOSPHERIC-PRESSURE PLASMA AND METHOD FOR THE FREQUENCY CONTROL OF A PIEZOELECTRIC TRANSFORMER


Patent No. 10,772,182
Issue Date September 08, 2020
Title Device For Producing A Non-thermal Atmospheric-pressure Plasma And Method For The Frequency Control Of A Piezoelectric Transformer
Inventorship Michael Weilguni, Hagenberg (AT)
Stefan Nettesheim, Regensburg (DE)
Assignee TDK ELECTRONICS AG, Munich (DE) RELYON PLASMA GMBH, Regensburg (DE)

Claim of US Patent No. 10,772,182

1. A device for producing a non-thermal atmospheric-pressure plasma, the device comprising: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 in such a way that the field strength is maximized when the device is switched on.