Drive system for electromagnetically driven shutter

Details Drive system for electromagnetically driven shutter Drive system for electromagnetically driven shutter

1979-06-15

1981-04-28

Gellner, Michael L.

354235, G03B 7087, G03B 942

Patent

active

042641624

ABSTRACT:
In the drive system disclosed, a first power source supplies a driving current to drive a moving member of an electromagnetic shutter driving device in one direction or in the reverse direction a second power source device consisting of a DC booster circuit, a capacitor, etc.; a photo-to-electric converter circuit discerns the brightness level of an object to be photographed and controls the outputs of the first and second power source devices to shift between these two outputs. An automatic change-over supplies the output of the second power source to the electromagnetic shutter driving device when the level of the output of the photo-to-electric converter circuit is equal to or above a predetermined level and supplies the output of the first power source to the electromagnetic shutter driving device when the output level of the photo-to-electric converter circuit is lower than the predetermined level.

REFERENCES:
patent: 4012751 (1977-03-01), Espig
patent: 4072965 (1978-02-01), Kondo

Affiliated with

Also associated with

Rating

Drive system for electromagnetically driven shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive system for electromagnetically driven shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive system for electromagnetically driven shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-860715