Electronic flash apparatus

Details Electronic flash apparatus Electronic flash apparatus

H - Electricity

05

B

315/12

H05B 41/04 (2006.01) H05B 41/29 (1980.01)

Patent

CA 1037551

ABSTRACT OF THE DISCLOSURE 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 con- verter circuit when the illumination of an object to be photo- graphed is lower than a predetermined value.

252066

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