a.
The expression for the frequency of the oscillation.
a.
Answer to Problem 15.29P
The expression for the frequency of oscillation:
Explanation of Solution
Given:
The circuit is given as:
The circuit is redrawn by labeling the voltages as shown below:
Assuming:
Considering
Nodal analysis at the node
The amplifier gain of
Now, the output of
The nodal analysis at the node
Applying the nodal analysis at the inverting terminal of the
Solving equation (3):
Now, solving the equation (1):
Evaluating the frequency of the oscillation, use
Now, equating the imaginary values to 0:
Squaring the both sides:
Hence, the needed expression for the frequency of oscillation:
b.
The condition for the oscillation.
b.
Answer to Problem 15.29P
The condition for oscillation:
Explanation of Solution
Given:
The circuit is given as:
When,
The condition for oscillation:
Taking
Hence, the needed condition for oscillation:
c.
The condition for the oscillation.
c.
Answer to Problem 15.29P
The condition for oscillation:
Explanation of Solution
Given:
The circuit is given as:
Now substituting the values in equation 4:
Hence, the condition for the oscillation:
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Chapter 15 Solutions
Microelectronics: Circuit Analysis and Design
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