(a) In the circuit of Fig. 4-66(a), determine the diodes DC operating point (I 0 , V...
Question:
(a) In the circuit of Fig. 4-66(a), determine the diode’s DC operating point (I0, V0). The diode’s characteristic is given in Fig. 4-61(b). Hint: Verify the Thévenin equivalent circuit shown in Fig. 4-66(b). Then use the result of Problem 4.57 (V0 = 1.1 V, I0 = 73 mA).
(b) A small AC voltage signal e = 0.6 sin t is added to the voltage source, as seen in Fig. 4-66(c), producing an additional small AC current i(t) in the diode. Find r, the small-signal model of the diode at the DC operating point and verify the small-signal model of the circuit shown in Fig. 4-66(d). Then determine the diode’s AC current i(t). Assume the diode’s terminal characteristic to be I = Is(e40V − 1), with n = 2.
Figure 4.6
Data from Problem 4.57
Find the diode’s DC operating point (I0, V0) in the circuit of Fig. 4-59(a) using the graph of Fig. 4-59(b).
Step by Step Answer:
Schaum S Outline Of Electric Circuits
ISBN: 9781260011968
7th Edition
Authors: Mahmood Nahvi, Joseph Edminister