Flash synchronization controlling means for program type electri

Details Flash synchronization controlling means for program type electri Flash synchronization controlling means for program type electri

1977-05-19

1979-03-13

Gellner, Michael L.

354 51, 354 60F, 354137, G03B 708, G03B 1505

Patent

active

041439554

ABSTRACT:
A flash synchronization controlling circuit for program type electric shutters. A first switching circuit is utilized for controlling the shutter closing and a second switching circuit is connected to the first switching circuit and utilized for controlling the flash actuation in order that the flash synchronization controlling circuit may be simplified and to provide a very positive and stable flash synchronizing operation. The flash synchronization controlling circuit is arranged so that the switching operation of the second switching circuit can be effected earlier by a predetermined time interval than that of the first switching circuit.

REFERENCES:
patent: 3587433 (1971-06-01), Yata
patent: 3675561 (1972-07-01), Schwarz
patent: 3683767 (1972-08-01), Sahara
patent: 3683769 (1972-08-01), Uchiyama et al.
patent: 3720144 (1973-03-01), Uchiyama
patent: 3721166 (1973-03-01), Yanagi
patent: 3745902 (1973-07-01), Taguchi
patent: 3776112 (1973-12-01), Wilwerding
patent: 3994007 (1976-11-01), Uchiyama et al.

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