1. Perform a hybrid analysis of the circuit below

(a) both with and without the effect of hre
(b) change the collector resistor to 2 k and repeat (a), so why does hre not have much effect now ?
(c) find a value for the emitter resistor to make the DC collector current 1.2mA

2. Investigate the advantage of Voltage Divider bias over Emitter Stabilised bias

For the two emitter follower circuits below, calculate the emitter and base currents (and voltages) using a transistor with beta = 100 and then a transistor with beta = 200.

Continue your analysis by finding the input and output impedances and the voltage and current gains.