______________________________________________________________ Solid State Power Supplies
CHAPTER 4
CHECK-ON-LEARNING QUESTIONS
When you are satisfied that you have answered every question to the best of your ability,
check your answers using Appendix A. If you missed eight or more questions, you should
review the chapter, paying particular attention to the areas in which your answers were
incorrect.
What are the four basic sections of a power supply?
1.
What is the purpose of the rectifier section?
2.
What is the purpose of the filter section?
3.
What is the purpose of the regulator section?
4.
What is the name of the simplest type of rectifier?
5.
Is the peak value higher or lower than the RMS value?
6.
What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?
7.
What is the main disadvantage of the full-wave rectifier?
8.
What is the name of the rectifier that has four diodes connected?
9.
What main advantage does a bridge rectifier have over a conventional full-wave rectifier?
10.
Does a bridge rectifier produce a higher or lower output voltage than the conventional full-
11.
wave rectifier circuit?
For proper operation, what do most electronic circuits require?
12.
Will the XC increase or decrease if you increase the value of the capacitor?
13.
What is produced when there is a change of current through an inductor?
14.
In a capacitor filter, is the capacitor in series or in parallel with the load?
15.
The value of capacitance and the value of the load resistance determine what for the
16.
capacitor?
How do you reduce the impedance of the capacitor by one-half?
17.
How many times does conduction occur during each cycle for a full-wave rectifier?
18.
What is the range of values usually chosen for a choke?
19.
The filtering action of the LC choke-input filter is improved when the filter is used in
20.
conjunction with what?
What protects the filter capacitor in the LC choke-input filter from extreme voltage surges?
21.
What must you use at all times when the capacitor is electrolyte?
22.
Why would you add a second stage of RC filtering?
23.
What is the most commonly used filter?
24.
What are the two disadvantages of the LC filter?
25.
What results in a leaky or open capacitor in the filter circuit?
26.
What should be the ideal output of most power supplies?
27.
23 June 2005
TC 9-62
4-53
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