Voltage Regulation Flashcards
Voltage regulators are circuits used in power supplies to _____.
maintain a constant DC output voltage to a load.
What is a series voltage regulator?
A series voltage regulator has the regulator circuit in series with the load.
In a series voltage regulator, if the DC input voltage increases, the output voltage is held constant by adjusting R1 to _______.
increase its voltage drop
If the DC input voltage increases, the output voltage increases. R1’s voltage drop must increase to lower Eout to its original value.
In a series voltage regulator, if the current drawn by the load decreases, the output voltage is held constant by adjusting R1 to _______.
increase its voltage drop
If the current drawn by the load decreases, the voltage drop across R1 decreases, increasing the output voltage. R1’s voltage drop must be increased to lower Eout to its original value.
What is a parallel voltage regulator?
The parallel voltage regulator has the regulator circuit in parallel with the load.
The purpose of the regulator circuit is to adjust current flow to maintain ______
Eout at a constant level.
Thia circuit operates by adjusting ______ to maintain a constant Eout when circuit conditions vary.
The circuit operates by adjusting R1’s voltage drop to maintain a constant Eout when circuit conditions vary.
In a series voltage regulator, what causes Eout to decrease?
The DC input voltage decreases or the load current increases.
The DC input voltage decreases or the load current decreases.
The DC input voltage increases or the load current increases.
The DC input voltage increases or the load current decreases.
The DC input voltage decreases or the load current increases.
In a series voltage regulator, how does Eout remain constant if the load current increases?
R1 increases in value, increasing ER1.
R1 increases in value, decreasing ER1.
R1 decreases in value, increasing ER1.
R1 decreases in value, decreasing ER1.
R1 decreases in value, decreasing ER1.
The purpose of a series voltage regulator is to maintain a constant output _______.
resistance to a load
voltage to a load
current to a load
power to a load
voltage to a load
In a series regulator, how does Eout remain constant if the DC input voltage decreases?
R1 increases in value, decreasing ER1.
R1 decreases in value, increasing ER1.
R1 increases in value, increasing ER1.
R1 decreases in value, decreasing ER1.
R1 decreases in value, decreasing ER1.
In series voltage regulators, how does Eout remain constant if the load current decreases?
R1 increases in value, increasing ER1.
R1 increases in value, decreasing ER1.
R1 decreases in value, increasing ER1.
R1 decreases in value, decreasing ER1.
R1 increases in value, increasing ER1.
In a parallel voltage regulator, how does Eout remain constant if the load current decreases?
R1 increases in value, decreasing IR1 and ER2.
R1 increases in value, increasing IR1 and ER2.
R1 decreases in value, decreasing IR1 and ER2.
R1 decreases in value, increasing IR1 and ER2.
R1 decreases in value, increasing IR1 and ER2.
n a parallel voltage regulator, how does Eout remain constant if the load current increases?
R1 decreases in value, decreasing IR1 and ER2.
R1 decreases in value, increasing IR1 and ER2.
R1 increases in value, decreasing IR1 and ER2.
R1 increases in value, increasing IR1 and ER2.
R1 increases in value, decreasing IR1 and ER2.
In a parallel voltage regulator, how does Eout remain constant if the DC input voltage decreases?
R1 decreases in value, decreasing IR1 and ER2.
R1 decreases in value, increasing IR1 and ER2.
R1 increases in value, decreasing IR1 and ER2.
R1 increases in value, increasing IR1 and ER2.
R1 increases in value, decreasing IR1 and ER2.
In a parallel voltage regulator, what causes Eout to decrease?
The DC input voltage decreases or the load current increases.
The DC input voltage decreases or the load current decreases.
The DC input voltage increases or the load current increases.
The DC input voltage increases or the load current decreases.
The DC input voltage decreases or the load current increases.
n a series voltage regulator, what causes Eout to decrease?
The DC input voltage decreases or the load current increases.
The DC input voltage decreases or the load current decreases.
The DC input voltage increases or the load current increases.
The DC input voltage increases or the load current decreases.
The DC input voltage decreases or the load current increases.
In a series voltage regulator, why does the voltage drop across RL remain constant when the input voltage increases or decreases?
ER1 remains the same.
The voltage drop depends on input voltage.
The current through R1 depends on load current.
The current through R1 depends on input current.
The current through R1 depends on load current.
In a series voltage regulator, if the DC input voltage increases, how does Eout remain constant?
R1 increases in value, decreasing ER1.
R1 decreases in value, increasing ER1.
R1 increases in value, increasing ER1.
R1 decreases in value, decreasing ER1.
R1 increases in value, increasing ER1.
In a parallel voltage regulator, how does Eout remain constant if the DC input voltage increases?
R1 decreases in value, increasing IR1 and ER2.
In a parallel voltage regulator, what causes Eout to increase?
DC input voltage decreases or the load current increases.
DC input voltage decreases or the load current decreases.
DC input voltage increases or the load current increases.
DC input voltage increases or the load current decreases.
DC input voltage increases or the load current decreases.
