| http://www.w3.org/ns/prov#value | - Referring to FIG. 32, according to a preferred embodiment, the ultrasonic system includes an ultrasonic power generator 153 for transforming a commercial supply of electric power (e.g. typically provided at low frequency such as 60 Hz) to an ultrasonic frequency range (approximately 120 kHz), a transducer element 150 for converting the high frequency electrical energy provided by generator 153 int
|
