ELECTRONIC FLASH APPARATUS

The invention provides an electronic flash apparatus having a first switch adapted to selectively connect a plurality of power supply batteries in series or in parallel and operatively associated with a shutter release and a second switch for opening and closing the power source of a converter circu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MISAKI, SATORU, IWATA, HIROSHI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	The invention provides an electronic flash apparatus having a first switch adapted to selectively connect a plurality of power supply batteries in series or in parallel and operatively associated with a shutter release and a second switch for opening and closing the power source of a converter circuit, whereby the initial depression of said shutter release causes said first switch to change the connection of said plurality of power supply batteries from the parallel connection to the series connection, and the subsequent depression of said shutter release closes said second switch to switch on said power source of said converter circuit when the illumination of an object to be photographed is lower than a predetermined value.