Photographic camera with electronic flash having periodically di

Details Photographic camera with electronic flash having periodically di Photographic camera with electronic flash having periodically di

1985-10-30

1987-02-10

Gellner, Michael L.

3542381, G03B 1505, G03B 1740

Patent

active

046419438

ABSTRACT:
A photographic camera having a single source of internal electrical power, an electronic flash that includes a flashtube and a charging system for storing an electrical charge for subsequent discharge across the light emitting element of the flashtube, a manually actuatable self-timer for generating an exposure interval initiating electrical signal a predetermined time after the timing cycle of the self-timer has been actuated and apparatus for generating electrically produced visual and/or audible signals indicating that the self-timer is in operation is provided with apparatus for inhibiting the operation of the electronic flash charging system whenever such signals are generated in order to prevent the relatively large electrical load associated with the electronic flash charging system from changing the voltage and/or current levels available from the camera's power source and thereby preclude interferance with the proper operation of the self-timer operation indicators which are sensitive to such changes.

REFERENCES:
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patent: 3543662 (1970-12-01), Erlichman
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patent: 4040072 (1977-08-01), Johnson et al.
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patent: 4188103 (1980-02-01), Biber et al.
patent: 4199246 (1980-04-01), Muggli
patent: 4472041 (1984-09-01), Carcia et al.

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