Hi I'm investigating the efficiency of using a BJT as a current source to power an LED.
Let's say I have a base resistor who's gain provides 10ma to an LED, what are the losses in this circuit?
Aside from exactly matching an LED to a battery.. what is the most efficient way to power an LED with a forward voltage of 3v from a 5v source?
Thanks
Let's say I have a base resistor who's gain provides 10ma to an LED, what are the losses in this circuit?
Aside from exactly matching an LED to a battery.. what is the most efficient way to power an LED with a forward voltage of 3v from a 5v source?
Thanks