The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2025
Filed:
Mar. 29, 2023
Pepperl+fuchs SE, Mannheim, DE;
Mark Heinrich Ewald Rode, Lampertheim, DE;
Pepperl+Fuchs SE, Mannheim, DE;
Abstract
The invention refers to a driving circuit () for a piezoelectric ultrasonic transducer () in an ultrasonic transducer system (), comprising: a transformer () having at least one primary-side winding (″); a switching unit having a semiconductor switch (″) connected to the at least one primary-side winding (″) via a switched connection (A', A″); and, a control unit () which is configured to alternately apply an operating voltage (U) to the at least one primary-side winding (″) or to disconnect it therefrom, a protection circuit () which is electrically coupled to the switched connection (A′, A″) and which has a Zener diode (ZD) which limits a switch-off voltage at the switched connection (A′, A″) in terms of magnitude to a limiting voltage (U) which corresponds to at least twice the operating voltage.