Hi Guys,
I need to control a 2N3904 npn transistor with a 12V PS and a switch. I know the current I need at the transisotor base is between 40 and 50 mA.
Ohms law states resistance is V/I. Using this, I get 0.24R. This doesn't make sense, or does it? Did I miss something along the way?
Angie
I need to control a 2N3904 npn transistor with a 12V PS and a switch. I know the current I need at the transisotor base is between 40 and 50 mA.
Ohms law states resistance is V/I. Using this, I get 0.24R. This doesn't make sense, or does it? Did I miss something along the way?
Angie