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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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Simple Touch Switch using 2n2222 Transistors | Electronics projects for beginners, Electronic circuit projects, Electronic circuit design
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voltage - Can this transistor (2N2222) take 6 V on emitter-base? Am I reading the datasheet incorrectly? - Electrical Engineering Stack Exchange
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Using 2n2222 to switch relay on/off with 3.3v - #18 by SteveMann - General Electronics - Arduino Forum
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Si Lab - Bipolar Transistor as a Switch | Discrete Semiconductor Circuit Projects | Electronics Textbook
How to connect a 2n2222 transistor as a switch without frying it (a circuit diagram will be very helpful) - Quora
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