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LEDs and Lighting Class
I made something similar and did not use any capacitor at all in my circuitJust had a Torid a NPN general purpose transistor a 2k ohm base resistor a on/off slide switch a battery holder and a LEDMy Torid had 8 turns one way and 4 turns the other way center tapped.I used a base from a old garden solar light it had the battery holder and the switch and I used magnet wire to connect every thing with and it works like a champ
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