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Asked: 2023-07-23T10:20:31-04:00 In:

D ***12.35 Consider the circuit of Fig. 12.16 in which Q1 and Q2 are matched, and Q3 and Q4 are matched but have three times the junction area of the others. Resistors R3 and R4 also are matched. For VCC = 10 V, find values for resistors R1 through R4 that allow for a base current of at least 10 mA in Q3 (and Q4) at vI = +5 V (vI = −5 V), when a load demands it, with at most a 2-to-1 variation in currents in Q1 (and Q2). The quiescent current in Q3 is to be 40 mA. Let β1,2 ≥ 150 and β3,4 ≥ 50. For input voltages around 0 V, estimate the output resistance of the overall follower driven by a source having zero resistance. For an input voltage of +1 V and a load resistance of 2 Ω, what output voltage results? Q1 and Q2 have |VBE| of 0.7 V at a current of 10 mA.

Venkyelectrical
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D ***12.35 Consider the circuit of Fig. 12.16 in which Q1 and Q2 are matched, and Q3 and Q4 are matched but have three times the junction area of the others. Resistors R3 and R4 also are matched. For VCC = 10 V, find values for resistors R1 through R4 that allow for a base current of at least 10 mA in Q3 (and Q4) at vI = +5 V (vI = −5 V), when a load demands it, with at most a 2-to-1 variation in currents in Q1 (and Q2). The quiescent current in Q3 is to be 40 mA. Let β1,2 ≥ 150 and β3,4 ≥ 50. For input voltages around 0 V, estimate the output resistance of the overall follower driven by a source having zero resistance. For an input voltage of +1 V and a load resistance of 2 Ω, what output voltage results? Q1 and Q2 have |VBE| of 0.7 V at a current of 10 mA.

D ***12.35 Consider the circuit of Fig. 12.16 in which Q1 and Q2 are matched, and Q3 and Q4 are matched but have three times the junction area of the others. Resistors R3 and R4 also are matched. For VCC = 10 V, find values for resistors R1 through R4 that allow for a base current of at least 10 mA in Q3 (and Q4) at vI = +5 V (vI = −5 V), when a load demands it, with at most a 2-to-1 variation in currents in Q1 (and Q2). The quiescent current in Q3 is to be 40 mA. Let β1,2 ≥ 150 and β3,4 ≥ 50. For input voltages around 0 V, estimate the output resistance of the overall follower driven by a source having zero resistance. For an input voltage of +1 V and a load resistance of 2 Ω, what output voltage results? Q1 and Q2 have |VBE| of 0.7 V at a current of 10 mA.

microelectronics by sedra & smith chapter 12 questions

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