I responded to a local ad for a designer to create a flashing sport helmet. The advertiser attached several hundred LEDs to a helmet, laid out to require 45 volts per string.
His idea was to have a pocket-sized 9V-powered flasher with five extra 9V batteries for the output circuit. I know this could best be done with MOSFETs, a clock generator and any CMOS counter IC, but wouldn't the case get warm and uncomfortable? The five batteries would be worn on the waist.
His idea was to have a pocket-sized 9V-powered flasher with five extra 9V batteries for the output circuit. I know this could best be done with MOSFETs, a clock generator and any CMOS counter IC, but wouldn't the case get warm and uncomfortable? The five batteries would be worn on the waist.