Motor control circuit and method with digital level shifting

Details Motor control circuit and method with digital level shifting Motor control circuit and method with digital level shifting

1997-11-26

2000-05-16

Masih, Karen

Electricity: motive power systems

Induction motor systems

Primary circuit control

318254, 318138, 364457, 327109, H02P 534

Patent

active

060641746

ABSTRACT:
A motor control circuit control the operation of a motor that includes a motor coil. The motor control circuit includes an analog driver structured to supply the motor coil with a supply voltage in response to receiving an analog driver input signal. Coupled to the analog driver is a digital-to-analog converter that is structured to convert a digital motor control signal to the analog driver input signal. Coupled to the digital-to-analog converter is a lever shifter that is structured to receive a low voltage digital command signal from a digital motor controller. The level shifter is also structured to increase the voltage of the digital command signal to produce the digital motor control signal and provide the digital motor control signal to the digital-to-analog converter.

REFERENCES:
patent: 4384665 (1983-05-01), Waddington
patent: 4777602 (1988-10-01), Wesner
patent: 5297024 (1994-03-01), Carobolante
patent: 5376834 (1994-12-01), Carobolante
patent: 5572156 (1996-11-01), Diazzi

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