Timing circuits for camera shutters

Details Timing circuits for camera shutters Timing circuits for camera shutters

1975-07-25

1977-08-09

Griffin, Donald A.

G03B 708

Patent

active

040415066

ABSTRACT:
A memory capacitor in an electric shutter circuit has one terminal coupled to a voltage responsive element such as a diode, which operates to effectively reduce the level to which the capacitor is charged to thereby attain a decrease in discharge time of the capacitor enabling rapid shutter operation.

REFERENCES:
patent: 3712194 (1973-01-01), Yoshimura
patent: 3849786 (1974-11-01), Nanka et al.
patent: 3863263 (1975-01-01), Itagalci
patent: 3864701 (1975-02-01), Krause
patent: 3879740 (1975-04-01), Mori et al.
patent: 3936843 (1976-02-01), Kurei et al.

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