Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_1496

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Step of 5 13.028E Refer to the circuit diagram of 741 operational amplifier input stage in figure 12.23 in the textbook. Output resistance of transistor is, = I, The value of early voltage for npn transistor is, = 125 V The value of early voltage V₁ for pnp transistor is, = 50 V The value of dc collector currents of the 741 circuit is I, = = 19 µA Substitute 50 for and for I, in the equation. = 2.63 MΩ Thus, output resistance of transistor is 2.63 MQ Step 2 of 5 Calculate the value of: Substitute 125 for and for I, in the equation. 125 = = 6.57 MΩ Step 3 of 5 Write the formula for trans-conductance. Substitute for and 0.025 for in the equation. = 0.025 =0.76 mA/V Step 4 of 5 Calculate the value of output resistance of transistor = = = Simplify further. = = 31.53 MΩ Thus, the value of output resistance of transistor is 31.53 Step 5 of 5 Calculate the output resistance of circuit. = Substitute for and for in the equation. R. = = 2.43 MΩ Thus, the value of output resistance is 2.43