Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_201

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Step of 1.045P Draw the circuit diagram of voltage gain amplifier. 100 + + 10 mV 10 kΩ 100 - 1000v, - Figure 1 Step of Determine the overall gain for voltage amplifier. = Substitute 1000 V/V for 10 for 100 for R, 100 for and for in the equation. 1100 (1000) =8.2645 V/V Therefore, the overall gain for voltage amplifier is 8.2645 V/V Step of 8 Voltage across the input resistance is calculated as = R, = = v, =0.909 mV Step of 8 Calculate the percentage of voltage drop across the input resistance. %Voltage drop 0.909 mV = x100 10 mV 0.909 = 10 =9.09% Determine the value of voltage drop in the internal =90.91% Therefore, remaining 90.91% of source voltage is lost in the internal resistance Step of 8 Determine the voltage across the output resistance. 100 100+1000 = =82.6363 mV Step of 8 Calculate the percentage of voltage drop across the output resistance. %Voltage x100 =0.0909x100 =9.09% Step of 8 Determine the value of voltage drop in the internal resistance 90.91% Therefore, remaining 90.91% of source voltage is lost in the output resistance of the amplifier Consider the source connected directly to load. 100 100+100x10 100 = 100.1x10 Therefore, the gain 0.999 mV/V Step of 8 Determine the ratio of voltage gains. 8.2645 0.999x10 = 8272.7 Therefore, the ratio of voltage gains is 8272.7 Therefore, it can be conclude that, the voltage gain due to amplifier is more beneficent than directly connected to the load.