Chapter 1, Problem 1.10TYU

Consider the circuit in Figure 1.28. Let $R=4\text{k}\Omega$ and $V_{\gamma }=0.7\text{V}$ . Determine $I_D$ for (a) $V_{PS}=0.5\text{V}$ , (b) $V_{PS}=2\text{V}$ , (c) $V_{PS}=5\text{V}$ , (d) $V_{PS}=-1\text{V}$ , and (e) $V_{PS}=-5\text{V}$ . (Ans. (a) 0, (b) 0.325 mA, (c) 1.075 mA, (d) 0, (e) 0).