Ultrasound system
OwnerWilliam L. Puskasinventor
Life of this patent
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Abstract
An ultrasound system for providing megasonics and ultrasonics to a liquid at different frequencies and/or sweeping frequencies with associated generators, transducers, operations between resonance and anti-resonance, non-resistive output with phase shift, multiple/sweep/single frequency modes, individually controlled sections, gate drive power control, variable inductive compensation for temperature changes, parallel inductor matching, stacked ceramics and non-volatile memory storage of fault, error and failure history.
Claims6
A method of delivering multiple megasonic frequencies to a liquid, comprising the steps of:
- (a) providing a liquid;
- (b) providing a megasonic transducer or assembly of megasonic transducers configured to selectively produce megasonic energy in said liquid at a single megasonic frequency within a first megasonic frequency band and at sweeping frequencies in said first megasonic frequency band;
- (c) coupling said transducer to said liquid;
- and
- (d) driving said transducer with a megasonics generator configured to produce said single megasonic frequency and said sweeping frequencies.
A system for coupling megasonics to a liquid, comprising:
- a megasonic transducer adapted to couple to a liquid and configured and arranged so as to produce megasonics in said liquid at a first megasonic frequency within a first megasonic frequency band and at sweeping frequencies in said first megasonic frequency band;
- a megasonic generator coupled to said transducer and configured and arranged to produce a driver signal to said megasonic transducer at said first megasonic frequency and at said sweeping frequencies.
A method of delivering transient megasonic cavitation and stable megasonic cavitation to a liquid, comprising the steps of:
- (a) providing a liquid;
- (b) providing a megasonic transducer or assembly of megasonic transducers configured to selectively produce megasonic energy in said liquid at single frequencies and at sweeping frequencies within a first megasonic frequency band;
- (c) coupling said transducer to said liquid;
- and
- (d) driving said transducer with a megasonics generator configured to produce substantially all of a range of frequencies within said megasonic frequency band;
- (e) controlling said generator so as to produce megasonic sweeping frequencies that cause predominantly transient cavitation in said liquid during a first time period and so as to produce a megasonic frequency that causes predominantly stable cavitation during a second time period different from and non-contiguous to said first time period.
Dependencies are inferred from the claim text.