Chapter 2, Problem 2.11TYU

The cut−in voltage of each diode in the circuit shown in Figure 2.43 is $V_{\gamma }=0.7\text{V}$ . Determine $I_{D1},I_{D2},I_{D3},V_A$ , and $V_B$ . (Ans. $I_{D1}=1.22\text{mA}$ , $I_{D2}=I_{D3}=0$ , $V_A=7.2\text{V}$ , $V_B=1.1\text{V}$ )