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Need help determining if a 2n2222 transistor is suitable for my LED application. : r/diyelectronics
What really is the difference between a 2N2222 and a 2N3904 NPN transistor? - Quora
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
2N2222 Transistor and Its Applications
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Is it safe to use a GPIO output to control an NPN transistor used a switch for the 5V Power out?