@4 In the circuit shown below, you are given two amplifiers A and B, to connect

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@4

In the circuit shown below, you are given two amplifiers A and B, to connect in cascade between a source S with Vs 10 mV and Rs = 100 Ohm, and a 100 Ohm load. The amplifiers have voltage gain, input resistance Rx, and output resistance Ry as follows: For amplifier A: G = 100 V/V, Rx = 10 k Ohm, Ry = 10 k Ohm For amplifier B: G = 1V/V, Rx, = 100 Ohm, and Ry, = 100 Ohm Your problem is to decide how the amplifiers should be connected Find the voltage gain V0(s)/Vs(s) as a ratio and in dB for the case SABL where A precedes B (source S, then amplifier A, then amplifier B, then load L) Find the voltage gain V0(s)/Vs(s) as a ratio and in dB for the case SBAL where B precedes A Which amplifier arrangement is best?

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