Chapter 1, Problem 1.57P

Consider the Zener diode circuit shown in Figure P1.57. The Zener break down voltage is $V_Z=5.6\text{V}$ at $I_Z=0.1\text{mA}$ , and the incremental Zener resistance is $r_z=10\Omega$ . (a) Determine $V_O$ with no load $\left(R_L=\infty \right)$ . (b) Find the change in the output voltage if $V_{PS}$ changes by $\pm \text{ 1 V}$ . (c) Find $V_O$ if $V_{PS}=10\text{V}$ and $R_L=2\text{kΩ}$ .

Figure P1.57