QUIZ
In series voltage regulators, how does Eout remain constant if the load current decreases?
R1 increases in value, increasing ER1.
In a series voltage regulator, why does the voltage drop across RL remain constant when the input voltage increases or decreases?
The current through R1 depends on load current.
The formula used to calculate the DC output of a half-wave rectifier is _______.
VDC = Vpeak x 0.318
5.The formula used to calculate the average DC output of a full-wave rectifier is _______.
VDC = Vpeak x 0.636
The formula used to calculate the average DC output of a non-filtered bridge rectifier is _______.
Vavg = Vpeak x 0.636
How many diodes are used in a half-wave rectifier circuit?
1
.How many diodes are used in a full-wave rectifier circuit?
2
How many diodes are used in a bridge rectifier circuit?
4
.A parallel voltage regulator maintains a constant output under what type of varying conditions?
DC input voltage and load current
.A series voltage regulator maintains a constant output under what type of varying conditions?
DC input voltage and load currents
In a series voltage regulator, what causes Eout to increase?
DC input voltage increases or the load current decreases.
What type of rectifier circuit uses two diodes?
Full-wave
Which circuit in a power supply is optional?
Protection
In a series voltage regulator, how does Eout remain constant if the load current increases?
R1 decreases in value, decreasing 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, how does Eout remain constant if the load current decreases?
R1 decreases in value, increasing IR1 and ER2.
.In a parallel voltage regulator, how does Eout remain constant if the load current increases?
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 increases in value, decreasing IR1 and ER2.
In a series voltage regulator, if the DC input voltage increases, how does Eout remain constant?
R1 increases in value, increasing ER1
Which section of a power supply converts AC to pulsating DC?
Rectifier
Which circuit in a power supply is optional?
Regulator
In a parallel voltage regulator, what causes Eout to decrease?
The DC input voltage decreases or the load current increases.
In a series voltage regulator, what causes Eout to decrease?
The DC input voltage decreases or the load current increases.
Why is a bridge rectifier output voltage higher than a full-wave rectifier?
The output voltage is taken across the full potential of the transformer.
What type of test equipment is used for comparing the measured to the calculated output voltage of a rectifier circuit?
a multimeter
In a parallel voltage regulator, the first step to maintaining output voltage when the input voltage increases or decreases is to _______.
adjust the resistance of R1
The parallel voltage regulator operates by _______.
adjusting R1's branch current to maintain constant Eout
The efficiency of a full-wave rectifier is higher than a half-wave rectifier because _______.
an output is developed for the entire input waveform
The efficiency of a half-wave rectifier is low because _______.
an output is only developed for half of the input waveform
The purpose of a power supply's filter circuit is to _______.
change pulsating DC to smooth DC
The purpose of a power supply is to _______.
convert AC power to DC power
The purpose of a half/full-wave rectifier circuit is to _______.
convert AC to pulsating DC
The purpose of a power supply's rectifier circuit is to _______.
convert AC to pulsating DC
in full rectifier An output is developed across RL when _______.
either D1 or D2 is forward biased
The purpose of a power supply's protection circuit is to _______.
prevent damage to the power supply
The component/s used in a power supply filter circuit is/are the _______.
reactive components
The purpose of a power supply's input circuit is to _______.
step UP or DOWN the AC input power
An output is developed across RL when _______.
the anode of D1 is positive ➜
The component/s used in a power supply input circuit is/are the _______.
transformer
The ripple frequency of a bridge rectifier is _______.
twice the input frequency
The ripple frequency of a full-wave rectifier is _______.
twice the input frequency
The series voltage regulator operates by _______.
varying its voltage drop
The purpose of a parallel voltage regulator is to maintain a constant output _______.
voltage to a load
The purpose of a series voltage regulator is to maintain a constant output _______.
voltage to a load
