Concept explainers
(a)
To sketch:The safe operating area for the transistor and the load line on the same graph.
(a)
Answer to Problem 8.5P
Thearea for the safe operation of the transistor and the load line for the transistor is shown in Figure 1.
Explanation of Solution
Calculation:
The sketch for the safe operating area of the transistor is shown below.
The required diagram is shown in Figure 1
The above figure shows the safe region under which the transistor must be operated. The graph is plotted under the linear current and voltage scale. The sketch for the load line is dotted and is given by
Conclusion:
Therefore, the area for the safe operation of the transistor and the load line for the transistor is shown in Figure 1
(b)
The value of the drain current.
(b)
Answer to Problem 8.5P
Thepower at
Explanation of Solution
Calculation:
The expression for the voltage
The expression for the drain current is given by,
Substitute
The expression for the drain to source voltage is given by,
Substitute
The expression for the power dissipation is given by,
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
The expression for the drain current in the non saturated region is given by,
Substitute
The expression for the drain current by ohm’s law is given by,
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Conclusion:
Therefore, the power at
(c)
Whether there is a possibility of transistor getting damage.
(c)
Answer to Problem 8.5P
Yes, thetransistor will get damaged at
Explanation of Solution
The power of the transistor at
The above power is greater than the rated power of the transistor this means that the transistor gets damaged at
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Chapter 8 Solutions
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