(a)
The value of
(a)
Answer to Problem 17.5P
The value of the resistance is
Explanation of Solution
Calculation:
The given diagram is shown in Figure 1
Mark the currents and redraw the circuit.
The required diagram is shown in Figure 2
The transistor number two is off and the value of the current
The expression for the value of the emitter voltage
Substitute
The expression for the value of the emitter current
Substitute
Substitute
The expression for the value of the capacitance of resistance
Substitute
Conclusion:
Therefore, the value of the resistance is
(b)
The value of the resistance
(b)
Answer to Problem 17.5P
The value of the resistance is
Explanation of Solution
Calculation:
The first transistor is on and the second is off.
The expression for the voltage
Substitute
The expression for the value of the emitter current
Substitute
The expression for the value of the current
Substitute
The expression for the value of the resistance
Substitute
Conclusion:
Therefore, the value of the resistance is
(c)
The value of the output voltage
(c)
Answer to Problem 17.5P
The case when the input voltage is
Explanation of Solution
Calculation:
Consider the case when the input voltage is
The expression to determine the value of the voltage
Substitute
The expression to determine the value of the voltage
Substitute
Consider the case when the input voltage is
The expression to determine the value of the voltage
Substitute
The expression to determine the value of the voltage
Substitute
Conclusion:
Therefore, the case when the input voltage is
(d)
The expression for the power dissipated in the circuit.
(d)
Answer to Problem 17.5P
The value of the power dissipated in the circuit for the input voltage
Explanation of Solution
Calculation:
Consider the case when the input voltage is
The expression for the value of the current through the resistance
Substitute
The expression for the value of the current through the resistance
Substitute
The expression for the value of the power dissipated in the circuit is given by,
Substitute
Consider the case when the input voltage is
The expression for the value of the current through the resistance
Substitute
The expression for the value of the current through the resistance
Substitute
The expression for the value of the power dissipated in the circuit is given by,
Substitute
Conclusion:
Therefore, the value of the power dissipated in the circuit for the input voltage
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Chapter 17 Solutions
Microelectronics: Circuit Analysis and Design
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