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Q.1. For the output stage shown in (Figure 1), the transistors parameters are: npn BJT's : B= 150 &VA=100 V pnp BJT's : B- 50 &VA-60 V a) Draw the transfer C/Cs for (R2 large resistor) and (R2 small resistor). b) Calculate R2 so that the maximum output limit = 8 V. c) Calculate the maximum efficiency corresponding to part-b 15V PR2 Q1 Q2 Q3 R1 143kQ D1 Vo D2 RL Q4 10k Vi 15V

Q.1. For the output stage shown in (Figure 1), the transistors parameters are: npn BJT's : B= 150 &VA=100 V pnp BJT's : B- 50 &VA-60 V a) Draw the transfer C/Cs for (R2 large resistor) and (R2 small resistor). b) Calculate R2 so that the maximum output limit = 8 V. c) Calculate the maximum efficiency corresponding to part-b 15V PR2 Q1 Q2 Q3 R1 143kQ D1 Vo D2 RL Q4 10k Vi 15V

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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11:32 &d步. A N O ll l 2_5253461708... Class AB output stage Q.1. For the output stage shown in (Figure 1), the transistors parameters are: npn BJT's : B = 150 &VA=100 V pnp BJT's : B = 50 &VA-60 v a) Draw the transfer C/Cs for (R2 large resistor) and (R2 small resistor). b) Calculate R2 so that the maximum output limit = 8 V. c) Calculate the maximum efficiency corresponding to part - b 15V R2 Q1 Q2 03 R1 $143ka D1 - Vo D2 RL Q4 10ka Vi - 15V Figure 1 Q.2.The transistors of the circuit shown in Figure 2 have the following parameters: FET: VT=1V, K=0.1mA/V?, VA=15V and (W/L) is shown beside each BJT: VA= (50V for npn and 10V for pnp) and B= (100 for npn and 40 f i) Select R to yield a quiescent drain current in Qs of 0.1 mA. i) Draw the transfer C/Cs showing all voltage limits. ii) Calculate the ina cimum efficiency correspnding to the given RL, iii) Determine the required value of (W/L)s to make Ri follow the situation of RL1.
Transcribed Image Text:11:32 &d步. A N O ll l 2_5253461708... Class AB output stage Q.1. For the output stage shown in (Figure 1), the transistors parameters are: npn BJT's : B = 150 &VA=100 V pnp BJT's : B = 50 &VA-60 v a) Draw the transfer C/Cs for (R2 large resistor) and (R2 small resistor). b) Calculate R2 so that the maximum output limit = 8 V. c) Calculate the maximum efficiency corresponding to part - b 15V R2 Q1 Q2 03 R1 $143ka D1 - Vo D2 RL Q4 10ka Vi - 15V Figure 1 Q.2.The transistors of the circuit shown in Figure 2 have the following parameters: FET: VT=1V, K=0.1mA/V?, VA=15V and (W/L) is shown beside each BJT: VA= (50V for npn and 10V for pnp) and B= (100 for npn and 40 f i) Select R to yield a quiescent drain current in Qs of 0.1 mA. i) Draw the transfer C/Cs showing all voltage limits. ii) Calculate the ina cimum efficiency correspnding to the given RL, iii) Determine the required value of (W/L)s to make Ri follow the situation of RL1.
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