ELT 368 - DC & AC Fundamentals

Credits: 3
Lecture Hours: 3
Lab Hours: 0
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech

An introductory course in DC and AC fundamentals. Subject matter includes Ohm’s law, series and parallel circuits and measuring instruments.
Competencies

Explain circuit components
1. Discuss the characteristics and appearance of resistors
2. Discuss the characteristics and appearance of capacitors
3. Discuss the characteristics and appearance of inductors
4. Discuss the characteristics and appearance of transformers
5. Discuss the characteristics and appearance of semiconductor devices
6. Discuss basic electronic instruments
7. List the names and abbreviations of electrical units
8. Use scientific notation in expressing quantities
9. Use metric prefixes
Explain basic electrical quantities
1. Describe the structure of atoms and their place in electronics
2. Explain electrical charge
3. Discuss voltage
4. Discuss current
5. Discuss resistance
6. Analyze electric circuits
7. Recite the procedures for making basic circuit measurements
Explain Ohm’s law and power
1. Recite Ohm’s law
2. Discuss the application of Ohm’s law
3. Recite the formula for power
4. Solve for power in an electric circuit
5. Discuss the power ratings of resistors
Explain series circuits
1. Identify series circuits
2. Explain current in series circuits
3. Calculate total series resistance
4. Apply Ohm’s law in series circuits
5. Explain voltage sources in series
6. Use Kirchoff’s voltage law in series circuits
7. Explain voltage dividers
8. Calculate power in series circuits
9. Define circuit ground
10. Explain the troubleshooting procedures used in series circuits
Explain parallel circuits
1. Identify parallel circuits
2. Explain voltage in parallel circuits
3. Use Kirchoff’s current law in parallel circuits
4. Calculate total parallel resistance
5. Use Ohm’s law in parallel circuits
6. Explain the current divider principle
7. Calculate power in a parallel circuit
8. Relate parallel circuit applications
9. Explain the troubleshooting procedures used in parallel circuits
Explain series-parallel circuits
1. Identify series-parallel relationships
2. Analyze series-parallel circuits
3. Explain loaded voltage dividers
4. Discuss the loading effect of a voltmeter
5. Explain the Wheatstone bridge
6. Use the superposition method in circuits with more than one voltage source
7. Explain Thevenin’s theorem
8. Explain the troubleshooting procedures used in series-parallel circuits
Explain magnetism
1. Discuss the magnetic field
2. Discuss electromagnetism
3. List electromagnetic devices
4. Discuss magnetic hysteresis
5. Describe electromagnetic induction
6. Review applications of electromagnetic induction
Explain alternating current and voltage
1. Explain the sine wave
2. Discuss the voltage and current values of a sine wave
3. Discuss sine wave voltage sources
4. Relate the angular relationships of a sine wave
5. Give the sine wave equation
6. Discuss phasors
7. Relate the use of Ohm’s law and Kirchoff’s laws in ac circuits
8. Discuss superimposed dc and ac voltages
9. Discuss nonsinusoidal waveforms
10. Relate the basic principles of the oscilloscope and its uses in ac measurements
Explain capacitors
1. Discuss the basic construction
2. Define capacitance
3. Discuss the unit of capacitance
4. Explain how a capacitor stores energy
5. Discuss voltage rating of capacitors
6. Discuss temperature coefficient of capacitors
7. Discuss leakage in capacitors
8. Relate the physical characteristics of a capacitor
9. Summarize the types of capacitors
10. Discuss series capacitors
11. Discuss parallel capacitors
12. Explain capacitors in dc circuits
13. Explain capacitors in ac circuits
14. Relate capacitor applications
15. Explain the procedures for testing capacitors
Explain inductors
1. Discuss self-inductance
2. Give the unit of inductance
3. Discuss the physical characteristics of inductors
4. List the various types of inductors
5. Explain series inductors
6. Explain parallel inductors
7. Explain inductors in dc circuits
8. Explain inductors in ac circuits
9. Relate inductor applications
10. Explain the procedures for testing inductors
Explain transformers
1. Discuss the basic transformer
2. Explain step-up transformers
3. Explain step-down transformers
4. Discuss loading the secondary
5. Explain reflected load in a transformer
6. Discuss matching the load resistance to the source resistance
7. Relate the use of the transformer for isolation
8. Discuss nonidezl transformer characteristics
9. Discuss variations of the basic transformer
Explain the frequency response of RL circuits
1. Explain the sinusoidal response of RC circuits
2. Summarize impedance and phase angle of a series RC circuit
3. Analyze series RC circuits
4. Calculate impedance and phase angle of a parallel RC circuit
5. Analyze parallel RC circuits
6. Analyze series-parallel RC circuits
7. Discuss power in RC circuits
8. Relate basic applications of RC circuits
9. Discuss troubleshooting procedures in RC circuits
Explain the frequency response of RL circuits
1. Explain the sinusoidal response of RL circuits
2. Summarize impedance and phase angle of a series RL circuit
3. Analyze series RL circuits
4. Calculate impedance and phase angle of a parallel RL circuit
5. Analyze parallel RL circuits.
6. Analyze series-parallel RL circuits
7. Discuss power in RL circuits
8. Relate basic applications of RL circuits
9. Discuss troubleshooting procedures in RL circuits
Explain RCL circuits and resonance
1. Explain impedance and phase angle of series RCL circuits
2. Analyze series RCL circuits
3. Discuss series resonance
4. Discuss series resonant filters
5. Analyze parallel RCL circuits
6. Discuss parallel resonance
7. Discuss parallel resonant filters
8. Relate system applications of resonant circuits

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