Driving circuit for a piezoelectric ultrasonic transducer and ultrasonic transducer system
US12407160B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Dec 15, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/55
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention refers to a driving circuit (2) for a piezoelectric ultrasonic transducer (4) in an ultrasonic transducer system (1), comprising: a transformer (21) having at least one primary-side winding (22, 22′, 22″); a switching unit having a semiconductor switch (24′, 24″) connected to the at least one primary-side winding (22, 22′, 22″) via a switched connection (A′, A″); and, a control unit (5) which is configured to alternately apply an operating voltage (UB) to the at least one primary-side winding (22, 22′, 22″) or to disconnect it therefrom, a protection circuit (25) which is electrically coupled to the switched connection (A′, A″) and which has a Zener diode (ZD1) which limits a switch-off voltage at the switched connection (A′, A″) in terms of magnitude to a limiting voltage (UG) which corresponds to at least twice the operating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.