ATT Test 8
Study online at https://quizlet.com/_d12r7k
1. What are 5 parts of a power supply? Input, rectifier, filter, regulator, protection
2. Which two parts of a power supply are op- Regulator and protection
tional?
3. What is the purpose of a power supply? To convert AC power into smooth DC
power
4. What does the input of a power supply do? Step up or down the AC input voltage
5. What does the rectifier do in a power supply? Changes AC into pulsating DC
6. What does the filter do in a power supply? Changes pulsating DC into smooth DC
7. How type of components do filters use? Reactive components
8. What does a regulator do in a power supply? maintains the output voltage at a con-
stant level despite changes in load cur-
rent
9. What does the protection circuit do in power Prevents damage to power supply if load
supply? becomes faulty, limits or disables output
10. The half wave rectifier is the same as what Series limiter
circuit?
11. Which rectifier is the least efficient using only Half-wave
half the input?
12. Which two rectifiers require two input signals Full-wave and bridge
180 degrees out of phase?
13. Which rectifier uses a center tapped trans- Full wave
former?
1/9
, ATT Test 8
Study online at https://quizlet.com/_d12r7k
14. How is frequency determined for half wave Output frequency is same as input fre-
rectifier? quency
15. How is frequency determined for full wave Output is twice the input frequency
rectifier?
16. How is frequency determined for bridge rec- Output is twice the input frequency
tifier?
17. What is the purpose of series voltage regula- To adjust voltage drop to maintain V out
tors? at constant level
18. In a series voltage regulator, V out INCREAS- Load current decreases OR DC input in-
ES when what happens? creases
19. In series voltage regulator, V out DECREASES Load current increases OR DC input de-
when what happens? creases
20. If load current decreases or DC input increas- Increase R1 resistance to increase voltage
es, what needs to be done to maintain con- drop on R1
stant level of V out (series volt regulator)?
21. If load current increases or DC input decreas- Increase R1 resistance to decreases volt-
es, what needs to be done to maintain con- age drop on R1
stant level of V out (series voltage regulator)?
22. What is the purpose of parallel voltage regu- Adjust current flow to maintain V out at
lator? constant level
23. In parallel voltage regulator, V out increases DC input increases or load current de-
when what happens? creases
24. In parallel voltage regulator, V out decreases When DC input decreases or load current
when what happens? increases
2/9
Study online at https://quizlet.com/_d12r7k
1. What are 5 parts of a power supply? Input, rectifier, filter, regulator, protection
2. Which two parts of a power supply are op- Regulator and protection
tional?
3. What is the purpose of a power supply? To convert AC power into smooth DC
power
4. What does the input of a power supply do? Step up or down the AC input voltage
5. What does the rectifier do in a power supply? Changes AC into pulsating DC
6. What does the filter do in a power supply? Changes pulsating DC into smooth DC
7. How type of components do filters use? Reactive components
8. What does a regulator do in a power supply? maintains the output voltage at a con-
stant level despite changes in load cur-
rent
9. What does the protection circuit do in power Prevents damage to power supply if load
supply? becomes faulty, limits or disables output
10. The half wave rectifier is the same as what Series limiter
circuit?
11. Which rectifier is the least efficient using only Half-wave
half the input?
12. Which two rectifiers require two input signals Full-wave and bridge
180 degrees out of phase?
13. Which rectifier uses a center tapped trans- Full wave
former?
1/9
, ATT Test 8
Study online at https://quizlet.com/_d12r7k
14. How is frequency determined for half wave Output frequency is same as input fre-
rectifier? quency
15. How is frequency determined for full wave Output is twice the input frequency
rectifier?
16. How is frequency determined for bridge rec- Output is twice the input frequency
tifier?
17. What is the purpose of series voltage regula- To adjust voltage drop to maintain V out
tors? at constant level
18. In a series voltage regulator, V out INCREAS- Load current decreases OR DC input in-
ES when what happens? creases
19. In series voltage regulator, V out DECREASES Load current increases OR DC input de-
when what happens? creases
20. If load current decreases or DC input increas- Increase R1 resistance to increase voltage
es, what needs to be done to maintain con- drop on R1
stant level of V out (series volt regulator)?
21. If load current increases or DC input decreas- Increase R1 resistance to decreases volt-
es, what needs to be done to maintain con- age drop on R1
stant level of V out (series voltage regulator)?
22. What is the purpose of parallel voltage regu- Adjust current flow to maintain V out at
lator? constant level
23. In parallel voltage regulator, V out increases DC input increases or load current de-
when what happens? creases
24. In parallel voltage regulator, V out decreases When DC input decreases or load current
when what happens? increases
2/9
