I came across a tutorial where I thought the above BJT NPN circuit is wrong because of the conclusions made.
But when I simulated this circuit I found out the conclusions were true.
I was completely puzzled and seems like I have some fundamental misconception about transistor behavior.
The above circuit is not powered. There is no Vcc.
There is an input voltage Vin which is increased from zero to 1V.
Below is the plot of the output voltage Vout with respect to Vin:
And here below plot is the current through the load I(Rload) and the collector current Ic with respect to Vin.
My confusion is how come any current forms and flows through collector and Rload when there is no potential difference between the transistor's collector and emitter terminals.
According to the plot it seems KCL is satisfied because I(Rload) + Ic = 0.
But what I don't understand how does the current forms and flows this way.
If someone would ask me I would say: "The current will flow from the base to the emitter hence to the ground. There will be no current through the load and there Vout will be zero."
I'm completely puzzled with this circuit. Obviously something is wrong in my view. Why does the current loop that way?