Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1981-08-26
1983-06-21
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310313B, 333154, 358201, 358213, 330 46, 357 26, H01L 4108
Patent
active
043895905
ABSTRACT:
A waveform recorder wherein surface acoustic waves excited in a piezoelecc-insulator-semiconductor layered structure produce a traveling electric field in the semiconductor substrate. Charges stored in the traveling potential wells and representing the instantaneous amplitude of a waveform to be recorded are transferred at high speed and density to different respective spatial locations. Because each successive well represents a different time instant of the waveform, the different spatial locations correspond to different times. The output signal from each of the locations can be selectively delayed before application to a display oscilloscope to enable display of the waveform at a rate many times slower than the actual frequency of the signal waveform.
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Beers Robert F.
Budd Mark O.
Ellis William T.
Klein Alan P.
The United States of America as represented by the Secretary of
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