Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1978-02-27
1979-05-29
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310319, 73584, H01L 4110
Patent
active
041568230
ABSTRACT:
In an ultrasonic wave generator or receiver using an ultrasonic wave transducer, a negative immittance converter is inserted in a circuit of the generator or receiver in order to cancel components which impede the damping characteristics of the ultrasonic transducer.
REFERENCES:
patent: 2416337 (1947-02-01), Mason
patent: 3409787 (1968-11-01), Agalides et al.
patent: 3532911 (1970-10-01), Roberts et al.
patent: 3601712 (1971-08-01), Elazar
patent: 3903733 (1975-09-01), Murayama
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