Junction Transistor
An n-p-n transistor can be considered to be equivalent to two diodes connected. Which one of the following figure is correct?
Show answer and solution
Answer: (b)
- An n-p-n transistor is n (emitter), p (base), n (collector), so it has two p-n junctions sharing the p base.
- In each junction diode the arrow points from p to n, so both diodes point away from B: one from B to E and one from B to C.
- Only figure (b) shows E ◁ B ▷ C.
- So the answer is (b).