
Concept explainers
(a)
The value of the collector current, base current and the node voltages for the given values.
(a)

Answer to Problem 17.38P
The value of the base voltage
Explanation of Solution
Calculation:
The given diagram is shown in Figure 1
The expression for the voltage
Substitute
The expression for the base current of the first transistor is given by,
Substitute
The expression for the voltage
Substitute
The first transistor are forward biased and the other transistor are operating in the cut off region therefore the value of the different collector current is given by,
The expression for the current
The conversion from
The conversion from
The expression for the value of the current
Substitute
The expression for the value of the current
Substitute
The expression for the base voltage of the fourth transistor is given by,
Substitute
Conclusion:
Therefore, the value of the base voltage
(b)
The value of the collector current, base current and the node voltages for the given value.
(b)

Answer to Problem 17.38P
The value of the base voltage
Explanation of Solution
Calculation:
The expression for the value of voltage
Substitute
The expression for the base current of the first transistor is given by,
Substitute
The expression for the voltage
Substitute
The expression for the value of the second transistor is given by,
Substitute
The expression for the value of the current
Substitute
The expression for the voltage
Substitute
The expression for the value of the current
Substitute
The expression for the value of the voltage
The expression for the value of the current
The expression for the value of the current
The expression for the value of the voltage
Substitute
The expression for the value of the current
Substitute
The expression for the value of the current
Substitute
Conclusion:
Therefore, the value of the base voltage
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Chapter 17 Solutions
Microelectronics: Circuit Analysis and Design
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