Sonic transducer and method for making the same

摘要

Sonic transducer and method for making the same. A sonic transducer of the type used in generating ultrasound frequencies for medical therapy includes a substantially planar circular piezoelectric crystal which is bonded to the rear surface of a circular metal diaphragm. The diaphragm front surface includes a substantially planar applicating face and an annular non-parallel surface surrounding the applicating face. The transducer may be excited to produce maximum ultrasound energy over a relatively broad frequency range.