Question

Question1 Figure 1 represents a shunt-shunt feedback amplifier circuit. The resistors' values and the transistors parameters are also indicated in Figure 1 Voo 8100 Rci 28 KS2 Rci D10 | R.-S㏀ Hint: in DC analysis; gl -11.538mA/V and 0 R0.2k2 822.85mA/V IE 0.3mA Figure- 1) For R, -10 k2, determine the small-signal closed-loop current-gain A, 2) Determine the small-signal open-loop current-gain.4,- 3) From the results of 2) and 3), determine the loop-gain T Kint: If you did not solve a), assume A, -3 If you did not solve s), assume A -600 Question 2 Consider the following three-pole feedback amplifier with a loop gain function (10 marks) 5432× β 3 x 10 2x103 4x 10 If B-38.66x10 determine the phase margin and the gain margin of this system (if it is stable)

Answer 1

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