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Bluish Flasher

This circuit is innovative in more than one way and therefore belongs per se in Elektor’s Small Circuits Collection. Firstly, it demonstrates how the combination of a blue and a white LED can be used to give a realistic imitation of a camera flashlight. Secondly, the good old 555 IC is used in a way many of you may never have seen before — alternately monostable / astable — without too much in the way of external parts.
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