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AC Circuits

Course Number: EET 112
Transcript Title: AC Circuits
Created: September 1, 2012
Updated: August 15, 2014
Total Credits: 5
Lecture Hours: 40
Lecture / Lab Hours: 0
Lab Hours: 30
Satisfies Cultural Literacy requirement: No
Satisfies General Education requirement: No
Grading options: A-F (default), audit

Prerequisites

MTH 111
EET 111

Course Description

Introduction of capacitance, inductance, RC/RL transient response, sinusoidal waveforms, reactance and impedance, AC power, phasor analysis of RLC circuits, node voltage and mesh current analysis, superposition, Thevenin's and Norton's network theorems. Includes a 3-hour per week laboratory. Prerequisite: MTH 111, EET 111. Audit available.

Intended Outcomes

Upon successful completion of this course, students will be able to:

  1. Apply basic electrical DC and AC concepts and theorems to analyze circuits.
  2. Build and troubleshootDC and AC electrical circuits and perform measurements with electronic test equipment.
  3. Write technical reports using collected experiment data.
  4. Use circuit simulation software to analyze AC circuits.
  5. Identify the types of capacitors and inductors in a circuit, and what their electrical characteristics are in a DC or AC environment with respect to frequency, phase, ohms law, current and voltage.

Outcome Assessment Strategies

Evaluation is by exams, homework, and lab work.

Course Activities and Design

Lecture and discussion are the instructional methods used. Weekly homework is assigned. Laboratory activity includes building circuits on solder-less breadboards, making circuit measurements using test equipment, analyzing test data, comparing predictions to theory.

Lab exercises also involve using a PC with spreadsheet, word processor, and circuit simulation software.

Course Content (Themes, Concepts, Issues and Skills)

The student is expected to learn the following in the lab:

  • Use the DMM (digital multi-meter) to measure AC voltage, and current.
  • Use the Oscilloscope to measure AC waveforms in the time domain.
  • Use the oscilloscope to measure phase angles between two AC waveforms.
  • Use the function generator to generate sinusoidal waveforms of specific frequency and amplitude.
  • Build circuits on a solder-less breadboard.
  • Use the DC power supply.
  • Use the spreadsheet and word processor to process lab data and to write lab reports.
  • Use circuit simulation software to simulate circuits built in the lab.
  1. Inductors
    1. Inductance and the magnetic field.
    2. Induced voltage RL circuit transient response.
    3. Inductors in series and parallel.
    4. Energy storage in an inductor.
  2. Sinusoidal waveforms
    1. Graphical and mathematical representation of a sinusoid.
    2. Frequency spectrum
    3. Phase relationships, average values, rms values.
    4. AC measurements
  3. Phasors and circuit elements in the phasor domain
    1. R, L, and C response to sinusoidal voltages and currents.
    2. Frequency response of R, L, and C circuit elements.
    3. Complex numbers, rectangular and polar forms.
    4. Conversion between polar and rectangular forms.
    5. Complex number math and use of calculator.
  4. Series, parallel, and Series-Parallel AC Circuits Reactance and Susceptance.
    1. Impedance, Admittance, and the phasor diagram.
    2. Series circuit, voltage divider.
    3. Frequency response of series circuits.
    4. Parallel circuit, current divider.
    5. Frequency response of parallel circuits.
    6. Series and parallel equivalent circuits.
    7. Example by combining series and parallel concepts.
  5. Analysis Methods and Theorems
    1. Sources and source conversions.
    2. Node voltage and mesh current methods.
    3. Bridge networks.
    4. Delta-wye and wye-delta circuits and conversions.
    5. Superposition Theorem.
    6. Tfhevenin’s and Norton’s Theorem.
    7. Maximum power transfer theorem.
  6. Capacitors
    1. Electric field and capacitance.
    2. Capacitors
    3. Charging and discharging capacitors through a resistance.
    4. RC time constant and the exponential function.
    5. Capacitors in series and parallel.
    6. Energy storage