Photographic camera provided with flash means

Details Photographic camera provided with flash means Photographic camera provided with flash means

1979-02-14

1980-12-02

Griffin, Donald A.

354 33, 354234, 354246, G03B 716, G03B 908, G03B 940, G03B 1505

Patent

active

042367964

ABSTRACT:
A photographic camera provided with flash tube has a voltage detector for detecting the voltage level of a power supply; a control circuit controlled by the detector for preventing start of the photographing operation until the voltage source of the power supply recovers to a predetermined level during charging of a first capacitor for firing of the flash tube; and a second capacitor connected in parallel with the power supply and connected between a primary winding of an electric voltage boosting circuit and the power supply. By this arrangement, the start of the photographing operation is prevented until the voltage level of the power supply is fully recovered after firing of the flash tube and operation of the camera.

REFERENCES:
patent: 3675547 (1972-07-01), Uchimaya et al.
patent: 3768390 (1973-10-01), Kobori
patent: 3917395 (1975-11-01), Ogawa
patent: 3946414 (1976-03-01), Kitai
patent: 3953867 (1976-04-01), Kondo
patent: 3997815 (1976-12-01), Decker
patent: 4047194 (1977-09-01), Nakamura et al.
patent: 4084167 (1978-04-01), Iwata
Japanese Laid Open Patent Application No. 49-5618, K. Shiozawa.

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