I generally use a 1k on the base, and around 200 - 250ohms from a 5v supply to power a small 5mm LED.
5/1000
0.005 amps at the base of the transistor (it can handle up to 40ma (0.040amps)
I generally use a 1k on the base, and around 200 - 250ohms from a 5v supply to power a small 5mm LED.
5/1000
0.005 amps at the base of the transistor (it can handle up to 40ma (0.040amps)