Concept explainers
a.
The expression for the frequency of the oscillation in the terms of C, R and Rv.
a.
Answer to Problem 15.31P
The frequency of oscillation:
Explanation of Solution
Given:
The circuit is given for the phase shift oscillator:
Redrawing the given circuit
Nodal analysis at the node
Nodal analysis at the node
Nodal analysis at the node
Now, solving the equation 2 and 3:
Nodal analysis at the inverting terminal:
From equation (3):
From equation 4:
Substituting values of
Now simplifying more:
Now equating imaginary part to 0:
Now simplifying:
Squaring on the both sides:
Since, the frequency is given as:
Hence, the required frequency of oscillation is
b.
The range in the frequency of the oscillation.
b.
Answer to Problem 15.31P
The range of frequency of oscillation:
Explanation of Solution
Given:
The circuit is given for the phase shift oscillator:
The expression for the frequency of the oscillation is given as:
Substitute the known values in the above expression:
More simplifying:
If,
Substitute the known values:
More simplifying:
Hence, the required range of frequency of oscillation:
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Chapter 15 Solutions
Microelectronics: Circuit Analysis and Design
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