Ultrasonic motor driving circuit

Details Ultrasonic motor driving circuit Ultrasonic motor driving circuit

1990-12-11

1992-03-24

Budd, Mark O.

Electricity: motive power systems

Nonmagnetic motor

310316, H01L 4108

Patent

active

050991809

ABSTRACT:
An ultrasonic motor driving circuit has a drive duty generating circuit that intermittently outputs a drive request signal according to the battery voltage, and a drive signal output means that receives the drive request signal to output a drive signal. The drive signal is in the form of bursts with pause intervals, the pause intervals being variable with a change in the battery voltage thereby improving utilization of the battery capacity.

REFERENCES:
patent: 4727276 (1988-02-01), Izukawa et al.
patent: 4743788 (1988-05-01), Takagi et al.
patent: 4965481 (1990-10-01), Kashiyama

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