REVERSE DRIVING METHOD FOR ULTRASONIC WAVE TRANSDUCER

摘要

The method improves the axial resolution of ultrasonic transducer using reverse exciting the transducer. The ultrasonic transducer is excited and then reversely excited having a delay (Td). A coil (L) is connected in parallel to a terminal of the ultrasonic transducer to obtaine a transducer terminal voltage and the terminal is shorted after a delay time using a switching device.