07396336 is referenced by 225 patents and cites 651 patents.

A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device. An output control circuit receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal, and generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal. A compensated drive circuit receives and processes the compensated clock signal for generating the divider reference signal, and for generating the driver output signal.

Title
Switched resonant ultrasonic power amplifier system
Application Number
10/974332
Publication Number
7396336 (B2)
Application Date
October 27, 2004
Publication Date
July 8, 2008
Inventor
James W McPherson
Boulder
CO, US
James H Orszulak
Nederland
CO, US
Assignee
Sherwood Services
CH
IPC
A61F 7/00
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