1.68 Figure P1.68 shows a signal source connected to the input of an amplifier. Here Rs is the source resistance, and R i and Ci are the input resistance and input capacitance, respectively, of the amplifier. Derive an expression for Vi (s)/Vs(s), and show that it is of the low-pass STC type. Find the 3-dB frequency for the case Rs = 10 k, Ri = 40 k, and C i = 5 pF.

68 9 - 1.68 Figure P1.68 shows a signal source connected to the input of an amplifier. Here Rs is the source resistance, and R i and Ci are the input resistance and input capacitance, respectively, of the amplifier. Derive an expression for Vi (s)/Vs(s), and show that it is of the low-pass STC type. Find the 3-dB frequency for the case Rs = 10 k, Ri = 40 k, and C i = 5 pF.

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images - 1.68 Figure P1.68 shows a signal source connected to the input of an amplifier. Here Rs is the source resistance, and R i and Ci are the input resistance and input capacitance, respectively, of the amplifier. Derive an expression for Vi (s)/Vs(s), and show that it is of the low-pass STC type. Find the 3-dB frequency for the case Rs = 10 k, Ri = 40 k, and C i = 5 pF.

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