Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1985-04-12
1986-04-22
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310366, 310352, 310319, H01L 4108
Patent
active
045844992
ABSTRACT:
A piezoelectric transformer signal coupler utilizes a drive circuit including an oscillator constructed to excite the primary of a piezoelectric transformer at its characteristic anti-resonant frequency. Positive feedback signals modulated by the time domain response characteristic of the particular piezoelectric transformer force the oscillator to lock onto its characteristic anti-resonant frequency despite variations thereof due to temperature drift and secondary loading. The resulting drive circuit is implementable as a miniature, low mass integrated circuit mountable on the transformer's piezoceramic wafer to create a signal coupler of a single integrated structure.
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Burman Orvar B.
Davenport John M.
Leskovec Robert A.
Budd Mark O.
General Electric Company
Jacob Fred
McDevitt J. F.
Schlamp Philip L.
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