Determine the stability of amplifier, given the open loop transfer function. A two pole feedback amplifier...
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Determine the stability of amplifier, given the open loop transfer function. A two pole feedback amplifier with an open-loop transfer function is given as 100 A(s) = where s=jw and w=2af. 1+ 104 (a) Find the gain-crossover frequency @g and fg of the open-loop amplifier. (16 pts) (b) Find the phase-margin øMo of the open-loop amplifier. (16 pts) (c) Find the feedback ratio B so that the phase-margin of the closed-loop amplifier is øc = 40°. %3D Determine the stability of amplifier, given the open loop transfer function. A two pole feedback amplifier with an open-loop transfer function is given as 100 A(s) = where s=jw and w=2af. 1+ 104 (a) Find the gain-crossover frequency @g and fg of the open-loop amplifier. (16 pts) (b) Find the phase-margin øMo of the open-loop amplifier. (16 pts) (c) Find the feedback ratio B so that the phase-margin of the closed-loop amplifier is øc = 40°. %3D
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