Motor drive unit used for camera and accessory thereof

Details Motor drive unit used for camera and accessory thereof Motor drive unit used for camera and accessory thereof

1996-04-05

1998-06-02

Martin, David S.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318379, 3889072, 396133, H02P 122

Patent

active

057605556

ABSTRACT:
A motor drive unit is provided with a bridge circuit including series connected first and second MOS transistors, series connected third and fourth MOS transistors, a DC motor connected between a junction of the first and second MOS transistors and a junction of the third and fourth MOS transistors, a power supply line connected to the first and third MOS transistors and a ground line connected to the second and fourth MOS transistors. The state of the DC motor is controlled by on/off controlling the MOS transistors of the bridge circuit. The MOS transistors are controlled such that the motor is continuously short-circuited when a power is supplied to the motor drive unit and the motor is not driven.

REFERENCES:
patent: 4680513 (1987-07-01), Kennedy
patent: 4705997 (1987-11-01), Juzswik
patent: 4710686 (1987-12-01), Guzik
patent: 4816726 (1989-03-01), Novis et al.
patent: 4879641 (1989-11-01), Rossi et al.
patent: 4902444 (1990-02-01), Daggett et al.
patent: 4924158 (1990-05-01), Kelley et al.
patent: 5032774 (1991-07-01), Juzswik
patent: 5119006 (1992-06-01), Schultz

Affiliated with

Also associated with

Rating

Motor drive unit used for camera and accessory thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor drive unit used for camera and accessory thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor drive unit used for camera and accessory thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1464069