Electricity: motive power systems – Nonmagnetic motor
Patent
1990-10-11
1992-08-18
Budd, Mark O.
Electricity: motive power systems
Nonmagnetic motor
310316, H01L 4108
Patent
active
051402319
ABSTRACT:
This invention concerns with a drive circuit for a vibratory-wave motor and, in particular, is to provide a motor drive circuit in which there is provided a voltage variable circuit for automatically varying the voltage applied to the motor to follow up the variation of the frequency of a driving high-frequency signal to the motor, whereby the voltage that affords an optimum drive efficiency in response to the frequency variation is applied to the motor.
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Budd Mark O.
Canon Kabushiki Kaisha
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