Current supply device for plural loads

Details Current supply device for plural loads Current supply device for plural loads

1985-06-14

1987-06-02

Miller, Charles D.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Parallel connected motors

318 54, 3541731, 354400, H02P 768

Patent

active

046706933

ABSTRACT:
A photographic camera exposes a film to an image of an object through a lens. The camera comprises means provided with a first motor for controlling the optical characteristic of the lens through the function of the first motor, means provided with a second motor for advancing the motor through the function of the second motor, and first, second and third serial circuit means each of which is provided with a pair of serially connected switching means and which are mutually connected in parallel manner. The camera further comprises first connection means for connecting the first motor between the junction of the pair of switching means in the first serial circuit means and the junction of the pair of switching means in the second serial circuit means, second connection means for connecting the second motor between the junction of the pair of switching means in the second serial circuit means and the junction of the pair of switching means in the third serial circuit means, and control means for controlling the switching means in the first, second and third serial circuit means for current supply for driving the first and second motors. The control means renders conductive one of the switching means of the first serial circuit means and one of the switching means of the second serial circuit means for driving the first motor. The control means renders conductive one of the switching means of the second serial circuit means and one of the switching means of the third serial circuit means for driving the second motor.

REFERENCES:
patent: 3526818 (1970-09-01), Scheibel
patent: 4296361 (1981-10-01), Archer
patent: 4319171 (1982-03-01), Motoori

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