Determine the power dissipated in the diode - find the

Question

Question 1: Find I and V_o in each circuit shown in Figure if (i) Vγ = 0.7 V and (ii) Vy = 0.6 V.

Figure

Question 2: In the circuit shown in Figure, find the diode voltage V_D and the supply voltage V such that the current is I_D = 0.4 mA. Assume the diode cut-in voltage is V_y = 0.7 V. (b) Using the results of part (a), determine the power dissipated in the diode.

Figure

Question 3:  (a) Consider a pn junction diode biased at I_DQ = 1 mA. A sinusoidal voltage is superimposed on V_DQ such that the peak-to-peak sinusoidal current is 0.05I_DQ. Find the value of the applied peak-to-peak sinusoidal voltage. (b) Repeat part (a) if I_DQ = 0.1 mA.

Question 4: Design a circuit to produce the characteristics shown in Figure. where i_p is the diode current and v_i is the input voltage. Assume diode piecewise linear parameters of V_y = 0.7 V and r_f = 0.

Figure