Question

1 Cascaded Amplifiers Consider a signal vs = V, sin wt, whe der a signal, = V, sin wt, where V. 50.00 mV and w = 27 (45.00 Hz). The signal resistance is Rs e have an arbitrary collection of resistors, as well as current amplifiers with Ais = 10.00 mA/mA, 0.00 k2, and R. = 200.0k Design a circuit to amplify the signal with a gain of 25.00. [10 marks]

Answer 1

In circuit Implementation Rs = 100k _AML Ro = cook ma Tout 1 - Somv = v i {R;= lok 1 Austin Y = 10 In --- - - --- current Amplifier by ohn's law & | Iin = 7 vs. , + 110 k Tout = 10 Tin = 10 v llok

Vo = Pload' Iout Vo = Pload y la Lo so = A vs = 25 = load Rime required is 25x11% = 275k_2 i Designed circuit is (to have voltage gain ve o = 25 - - - - - - ! - - R = rook Rs =look Emi my Vo Tout y tin Som V -'s V SR: -10K Y lo In I Road = 275k