04. ) Brely deseribe the operation of IFET. Draw the small signal circuit model of a JFET (8 pts) b) For the JFET amplifier in Figure 3, assume that transconductance on-11.46mA/V and small signal output resistance ro-70 kS2 1) Draw the small signal circuit model of the following JFET amplifier. (5 pts) II) Determine the following parameters of the amplifier. i) input resistance Rin, ii) output resistance, Ro, ii) voltage gain with load, An(wn. iv) voltage gain without load, Av(NL)> (12 pts) Inss- 15 mA 2NS555 Figure 3. A JFET amplifier