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Transistor circuit 15 Fading off an LED using 2N2222 NPN Bipolar Junction Transistor and capacitor - YouTube
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transistors - Attempt to use 2n2222 as a switch, but it seems to work below 5v (all the way down to < 1v). Why? - Electrical Engineering Stack Exchange
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transistors - GPIO failing to drive 2N2222 & LED simultaneously - Electrical Engineering Stack Exchange
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voltage - Driving a high power (200mA) LED with a GPIO and NPN transistor - Electrical Engineering Stack Exchange
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