Exposure control circuit for camera

Details Exposure control circuit for camera Exposure control circuit for camera

1976-11-09

1978-08-01

Hix, L. T.

354271, G03B 902, G03B 908

Patent

active

041046668

ABSTRACT:
The disclosure describes an improved exposure control circuit for camera in which an electromagnet adapted for control of camera shutter or diaphragm is excited with a constant current stabilized against variation of source voltage so that the operation time of said shutter or diaphragm may be remained always constant.

REFERENCES:
patent: 3293505 (1966-12-01), Miller
patent: 3922693 (1975-11-01), Matsui
patent: 3977011 (1976-08-01), Matsuda

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