SEC 15 upgrades & another Light Multiplier.ASF

Here are two things– my old SEC 15-3 with Dr. Stiffler’s new upgrades and my second ‘Light Multiplier’. The SEC 15-3 has been enhanced with the addition of a second transistor and the use of the 12 volt source battery as an intergal part of the circuit. The second ‘Light Multiplier’ that I am showing here, is using a hand wrapped coil wound around a piece of cardboard.

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