Consider the circuit shown in Figure 10.37(a). Let (V^{+}=3 mathrm{~V}) and (R_{1}=) (47 mathrm{k} Omega). The transistors

Question:

Consider the circuit shown in Figure 10.37(a). Let $V^{+}=3 \mathrm{~V}$ and $R_{1}=$ $47 \mathrm{k} \Omega$. The transistors $Q_{1}$ and $Q_{2}$ are matched with $V_{E B}(\mathrm{on})=0.6 \mathrm{~V}$. Neglect base currents, and assume $V_{A P}=90 \mathrm{~V}$ and $V_{A N}=120 \mathrm{~V}$. Determine the small-signal voltage gain for

(a) $R_{L}=\infty$,

(b) $R_{L}=300 \mathrm{k} \Omega$, and

(c) $R_{L}=150 \mathrm{k} \Omega$.

Figure 10.37(a):-

image text in transcribed