BJT Simulation

BJT Transistor Simulation

This simple simulation demonstrates the three states of a Bipolar Junction Transistor: off, active, and saturated. Use the and buttons to change the input voltage V_i. You may also enter in a voltage.

When doing this simulation, keep in mind the conditions for each state:

State Conditions Effects

Off V_BE < V_BEon No current flow

Active V_BE = V_BEon
V_CE >= V_CEsat i_C / i_B is constant, equal to Beta

Saturated V_BE = V_BEon
V_CE = V_CEsat i_C / i_B is not constant, and less than Beta

V_i =

State	Conditions	Effects
Off	V_BE < V_BEon	No current flow
Active	V_BE = V_BEon V_CE >= V_CEsat	i_C / i_B is constant, equal to Beta
Saturated	V_BE = V_BEon V_CE = V_CEsat	i_C / i_B is not constant, and less than Beta