Motor drive circuit and motor drive system using the circuit the

Details Motor drive circuit and motor drive system using the circuit the Motor drive circuit and motor drive system using the circuit the

1992-05-21

1994-02-22

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2908, H02P 602

Patent

active

052890899

ABSTRACT:
A motor drive circuit comprising, an amplifier which receives output signals of a Hall element for determining the phase of the rotor in a single phase DC motor and outputs the same after amplification; a drive signal generating circuit which receives the amplified signals of the amplifier, generates first and second pulses each having a duty of about 50% of which phases differ by about 180.degree. and outputs the same; a first drive circuit connected to a first terminal of the single phase DC motor and a second drive circuit connected to a second terminal of the single phase DC motor. The first and second drive circuits each including, a first transistor circuit which supplies a current to the single phase DC motor, a second transistor circuit which sinks a current from the single phase DC motor; and a diode which bypasses a current flown out from the single phase DC motor toward a power source line side.

REFERENCES:
patent: 4319170 (1982-03-01), Brent
patent: 4545004 (1985-10-01), Kade et al.
patent: 4584504 (1986-04-01), Lee et al.
patent: 4701683 (1987-10-01), Kikkawa
patent: 4859916 (1989-08-01), McCambridge
patent: 4924158 (1990-05-01), Kelley et al.
patent: 4972130 (1990-11-01), Rossi et al.
patent: 4988931 (1991-01-01), Tsukahara et al.

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