Re: Philips Bakelite BC-to-ES switched adaptor
Nick may have something there, Photoflood lamps used to simulate daylight for indoor photography are usually ES. Originally this was achieved by using a 115V bulb. Very bright light at the expense of a short life so a switched adapter would be useful. Professionals would use a series/parallel switched arrangement to prolong lamp life. In series for setting up the shot and then to parallel and quickly taking the photo.I
Peter
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