Patent ID: 6630768
Filing Date: 2003-10-07
Classification: B06B,B08B,D06F

Abstract:
An ultrasonic cleaning apparatus which cleans a subject to be cleaned by utilizing oscillation generated by an ultrasonic oscillator, comprising:a power amplifier for amplifying an amplitude of a signal to supply the signal as power to said ultrasonic oscillator; a detector for detecting a state of said ultrasonic oscillator; and a controller for controlling a frequency of said signal depending on an output detected by the detector, a switching transistor connected between said power amplifier and said ultrasonic oscillator, a switch control section connected to said switching transistor, wherein said switch control section turns off said switching transistor until a phase difference becomes equal to a predetermined value, and turns on said switching transistor after said phase difference becomes equal to said predetermined value, and wherein said power supplied to said ultrasonic oscillator is set to a range from 1W to 10W.