(a) Prove that any load line tangent to a power hyperbola makes contact with the hyperbola at the midpoint of the load line.

(b) Calculate the maximum possible instantaneous power dissipation in Q₁ for the circuit of Problem 5.1 with R_L = 2 kΩ and R_L = 10 kΩ.

(c) Calculate the average power dissipated in Q₁ for the circuit of Problem 5.1 with R_L = 2 kΩ and R_L = 10 kΩ. Assume that V_o is sinusoidal with an amplitude equal to the maximum possible before clipping occurs.

Data from Prob. 5.1:

A circuit as shown in Fig. 5.1 has V_CC = 15 V, R₁ = R₂ = 0, R₃ = 5 kΩ, R_L = 2 kΩ, V_CE(sat) = 0.2 V, and V_BE(on) = 0.7 V. All device areas are equal.

Fig. 5.1:

Transcribed Image Text:

+Vcc CC +o R3 RL3 V. 02 Q3 R2 R4 -Vcc