Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1976-11-10
1980-10-07
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310325, H01L 4110
Patent
active
042271100
ABSTRACT:
A control system for a Tonpilz transducer which is positioned between the transducer and the transducer drive amplifier. The control system determines the head velocity of the transducer from the input current and voltage and utilizes this determination in a feedback arrangement to maintain proper transducer excitation.
REFERENCES:
patent: 3293456 (1966-12-01), Shoh
patent: 3443130 (1969-05-01), Shoh
patent: 3489930 (1970-01-01), Shoh
patent: 3668486 (1972-06-01), Silver
patent: 3813616 (1974-05-01), Antonevich
patent: 3819961 (1974-06-01), Bourgeois et al.
patent: 3842340 (1974-10-01), Brandquist
patent: 3843897 (1974-10-01), Mishiro
Douglas George R.
Thompson John H.
Budd Mark O.
Schron D.
Westinghouse Electric Corp.
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