Im working on a project that uses an electronic door lock. It needs a lot more power than an arduino can supply, so my thought was to use a transistor to switch on a second power source solely for the door lock. I've been trying to figure this out for hours. I thought transistors were just electrica…

TIP31A Transistor Help

system November 20, 2011, 8:19pm 3

will you marry me? thank you so much. it works perfectly.

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