Response to the following :
The transistor in the circuit shown in Figure (a) is biased to operate in the active mode. Assuming that β is very large, find the collector bias current IC. Replace the transistor with the small-signal equivalent-circuit model of Fig.(b) (remember to replace the dc power supply with a short circuit). Analyze the resulting amplifier equivalent circuit to show that
(a):
(b):
Find the values of these voltage gains (for α? 1). Now, if the terminal labeled vo1 is connected to ground, what does the voltage gain vo2/vi become?