Hall effect motor control circuit and motor drive system using t

Details Hall effect motor control circuit and motor drive system using t Hall effect motor control circuit and motor drive system using t

1992-08-07

1993-10-05

Wysocki, Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318439, H02P 700

Patent

active

052508811

ABSTRACT:
A motor control circuit, which includes an input amplifying circuit which receives a detection signal relating to the rotation of a motor from a Hall element and amplifies the same, and a motor drive circuit which generates a drive current upon receipt of an output signal from the input amplifying circuit and drives the motor and in which at least the input amplifying circuit and the motor drive circuit are formed in an IC, a resistor disposed between the power source line and the Hall element outside the circuit formed in an IC and a diode disposed between the Hall element and a reference line in the forward direction, and wherein the diode is formed in an IC together with the input amplifying circuit and the motor drive circuit, and the diode voltage of the diode induced at the connection side with the Hall element is set nearly equal to or higher than the lower limit voltage level of the input signal of the input amplifying circuit.

REFERENCES:
patent: 3903463 (1975-09-01), Kanamori
patent: 4047084 (1977-09-01), Ban
patent: 4114073 (1978-09-01), Uzuka
patent: 4626751 (1986-12-01), Doemen
patent: 4633150 (1986-12-01), Inaji et al.
patent: 4658190 (1987-04-01), Miyazaki et al.
patent: 4730150 (1988-03-01), Lee et al.
patent: 4734627 (1988-03-01), Koerner
patent: 4922513 (1990-05-01), Joichi
patent: 4958118 (1990-09-01), Pottebaum

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