Design a voltage regulator circuit such as shown in Figure P2.21 so that
a.
The value of the input resistance, Ri.
Answer to Problem D2.25P
The value of resistance
Explanation of Solution
Given:
In the circuit,
Evaluating the
Evaluating the value of
Evaluating the value of
Substituting
Substituting
Substituting
Therefore, the value of resistance
b.
The source regulation and the variation in the output voltage.
Answer to Problem D2.25P
The source regulation is 4.44% and the variation in the output voltage is
Explanation of Solution
Given:
In the circuit,
The voltage
Evaluating
Evaluating the
For no load condition evaluating the value
Evaluating the value of
Substituting
Evaluating the value of
Evaluating the value of
Substituting
Evaluating the source regulation:
Therefore, the source regulation is 4.44% and the variation in the output voltage is
c.
The variation in the output voltage and the load regulation.
Answer to Problem D2.25P
The load regulation is
Explanation of Solution
Given:
In the circuit,
The voltage
The load resistance
For
Evaluating the value of
Evaluating the value of
When,
Applying Kirchhoff s current law to determine the current:
Evaluating the value of
Evaluating the load regulation:
Therefore, the load regulation is
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