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Asked: 2023-07-24T11:25:37-04:00 In:

12.42 Figure P12.42 shows a class AB output stage equipped with protection against the effect of short-circuiting the output while the stage is sourcing current. Find the value of RE1 that causes Q5 to turn on and absorb all of the 2-mA bias current when the output current being sourced reaches 100 mA, robbing Q1 of its base current. For Q5, IS = 10−14 A. If the normal peak output current is 60 mA, find the voltage drop across RE1 and the collector current of Q5.

Venkyelectrical
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12.42 Figure P12.42 shows a class AB output stage equipped with protection against the effect of short-circuiting the output while the stage is sourcing current. Find the value of RE1 that causes Q5 to turn on and absorb all of the 2-mA bias current when the output current being sourced reaches 100 mA, robbing Q1 of its base current. For Q5, IS = 10−14 A. If the normal peak output current is 60 mA, find the voltage drop across RE1 and the collector current of Q5.

12.42 Figure P12.42 shows a class AB output stage equipped with protection against the effect of short-circuiting the output while the stage is sourcing current. Find the value of RE1 that causes Q5 to turn on and absorb all of the 2-mA bias current when the output current being sourced reaches 100 mA, robbing Q1 of its base current. For Q5, IS = 10−14 A. If the normal peak output current is 60 mA, find the voltage drop across RE1 and the collector current of Q5.

microelectronics by sedra & smith chapter 12 questions

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