I know the formula of collector current is:
But my RL is a potentiometer, if I adjust it to 0Ω, how do I calculate the current?
Micaela ポストする September 29, 2020
It's definitely not infinite. Let me give you a hint and think about it at another level.
Iman ポストする September 29, 2020
VB=VBE+VE=VBE+IE*RE, and because IC≈IB, it can be transformed into (VB-VBE)/RE=IC
Jagger ポストする September 29, 2020
So what you need to know is that the collector current is independent of the collector load.
Jana ポストする September 29, 2020
The simple constant current circuit Ur2-0.7 divided by RE.
