Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1991-07-12
1993-03-30
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310317, H01L 4108
Patent
active
051987139
ABSTRACT:
In an ultrasonic transducer apparatus, one of ultrasonic transducer probes of a plurality of types is selectively connected to a driving unit. The ultrasonic probe includes an ultrasonic transducer having a series connection of an inductor, a resistor, and a capacitor, and a dumping capacitor connected in parallel with the series connection. The driving unit includes a driving circuit for supplying to the ultrasonic transducer a driving signal having a frequency where a phase difference between a voltage applied to the ultrasonic transducer and a current supplied to the ultrasonic transducer is substantially set to be zero, and an inductor connected to an output terminal of the driving circuit to be connected in parallel with the ultrasonic transducer. The inductor includes a plurality of intermediate taps having a different inductances, and each tap is connected to a connection terminal of the probe. The probe includes wiring for selecting the connection terminal so that an inductance corresponding to capacitive susceptance of the dumping capacitor of the ultrasonic transducer is connected in parallel with the ultrasonic transducer in a connector for connecting the probe and the driving unit.
REFERENCES:
patent: 2683866 (1954-07-01), Samsel
patent: 3363117 (1968-01-01), Mondot et al.
patent: 3409787 (1968-11-01), Agalides et al.
patent: 3666599 (1972-05-01), Obeda
patent: 3746897 (1973-07-01), Karatjas
patent: 3975650 (1976-08-01), Payne
patent: 4168447 (1979-09-01), Bussiere et al.
patent: 4582067 (1986-04-01), Silverstein
patent: 4692672 (1987-09-01), Okuno
patent: 4770185 (1988-09-01), Silverstein
patent: 4957100 (1990-09-01), Herzog et al.
patent: 4965532 (1990-10-01), Sakurai
patent: 4970656 (1990-11-01), Lo et al.
patent: 4979952 (1990-12-01), Kubota et al.
patent: 4996502 (1991-02-01), Endo
patent: 5026387 (1991-06-01), Thomas
Budd Mark O.
Dougherty Thomas M.
Olympus Optical Co,. Ltd.
LandOfFree
Ultrasonic transducer apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic transducer apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic transducer apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1283290