Use the BJT inverter circuit with its transfer characteristi

Use the BJT inverter circuit with its transfer characteristic shown above to answer the following questions:

V_o1=10 V
V_o2=0.4 V
V_i1=0.9 V
V_i2=1.9 V
R_C=960
=100

Let V_i = 1.4 + B cos(t) volts. What is the maximum value of B such that the BJT remains in the active (linear) region?

B_max =

Let V_i = 1.5 + B cos(t) volts. What is the maximum value of B such that the BJT remains in the active (linear) region?

B_max =  V

Let V_i = 1.2 + B cos(t) volts. What is the maximum value of B such that the BJT remains in the active (linear) region?

B_max =  V

Solution

1) B =1.36

Vi = 1.4 + 1.36 coswt

2) B =1.25

Vi = 1.5 + 1.25 coswt

Vi = 1.7 + 1.25 coswt