Electronic Devices - Voltage Regulators - Discussion
Discussion Forum : Voltage Regulators - General Questions (Q.No. 9)
9.
A voltage regulator with a no-load output dc voltage of 12 V is connected to a load with a resistance of 10 
. If the load resistance decreases to 7.5 , the load voltage will decrease to 10.9 V. The load current will be ________, and the percent load regulation is ________.
. If the load resistance decreases to 7.5 , the load voltage will decrease to 10.9 V. The load current will be ________, and the percent load regulation is ________.Discussion:
3 comments Page 1 of 1.
Abhishek said:
1 decade ago
Voltage regulation = (VOLTAGE at minimum load) - (VOLTAGE at maximum load).
%voltage regulation = 100x[{ (VOLTAGE at minimum load) - (VOLTAGE at maximum load) }/{VOLTAGE at specified load}].
Here, voltage at minimum load i.e. no current i.e.open circuit is 12V. Voltage at maximum load is 10.9V. Voltage at specified load is not given so take it equal to voltage at any load not equal to zero;so let take it 10.9V again.
Now, ANS = 100 x [{12-10.9}/10.9] = 10.09.
%voltage regulation = 100x[{ (VOLTAGE at minimum load) - (VOLTAGE at maximum load) }/{VOLTAGE at specified load}].
Here, voltage at minimum load i.e. no current i.e.open circuit is 12V. Voltage at maximum load is 10.9V. Voltage at specified load is not given so take it equal to voltage at any load not equal to zero;so let take it 10.9V again.
Now, ANS = 100 x [{12-10.9}/10.9] = 10.09.
(1)
Sabya said:
1 decade ago
I = V/R, I = 10.9/7.5 = 1.45A.
Ankita said:
1 decade ago
Please describe it?
(1)
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