Frequency modulated ultrasonic generator

Details Frequency modulated ultrasonic generator Frequency modulated ultrasonic generator

1997-04-22

1999-04-20

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

134 1, 134184, H01L 4108

Patent

active

058959971

ABSTRACT:
A generator for driving an ultrasonic transducer for use in ultrasonic cleaning. The generator is capable of maintaining substantially constant real output to a load while the output frequency of the generator is square wave frequency modulated about a wide bandwidth. Thus, the generator is capable of maintaining substantially constant real output to the load even if the output frequency is modulated substantially away from the load's resonant frequency. The square wave modulation of the output frequency causes improved cavitation of semi-aqueous cleaning solutions used in the load, and thus improves the cleaning action of the ultrasonic transducer.

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patent: 5462604 (1995-10-01), Shibano et al.
patent: 5496411 (1996-03-01), Candy
patent: 5534741 (1996-07-01), Smith

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