DC Circuits

Course Number: EET 111
Transcript Title: DC Circuits
Created: September 1, 2012
Updated: August 21, 2017
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
Repeats available for credit: 0


MTH 65 with a "B" or better, WR 115 and RD 115 or higher; or equivalent placement test.

Course Description

Covers SI units, engineering notation and prefixes, unit conversion, definitions of conductors and insulators, current, voltage, resistance, power, work/energy, capacity factor, and efficiency. Includes analysis of series, parallel, and series/parallel DC circuits using Ohm's and Kirchoff's Laws and Thevenin and Norton equivalent circuits. Introduces circuit simulation software, lab practices, soldering and de-soldering, schematic reading, circuit construction and troubleshooting, and lab equipment and instrumentation. Includes a 3-hour per week laboratory session. Prerequisites: MTH 65 (B or better), WR 115 and RD 115 or higher; or equivalent placement test scores. Audit available.

Intended Outcomes

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

  1. Apply basic electrical DC concepts and theorems to analyze circuits
  2. Build, simulate, and troubleshoot DC circuits and perform measurements with electronic test equipment.
  3. Write technical reports using collected experiment data.
  4. Use circuit simulation software to analyze DC circuits.
  5. Apply the concepts learned about DC circuits to compute current, voltage, power, energy, and efficiency of series, parallel, and series-parallel circuits using ohm’s law and network theorems.
  6. Identify the types, sizes and resistances of components and determine their application in a DC circuit.

Outcome Assessment Strategies

Evaluation is done via labs, quizzes, take home assignments, in class exercises, and exams.

Course Activities and Design

Lecture, discussion, online lessons, and in class and lab exercises are the instructional methods used.

Laboratory activity includes building, analyzing, and troubleshooting DC circuits on solderless protoboards and industrial trainers. Instrumentation will be used to measure resistance, voltage, and current. Theoretical predictions will be compared with observed values. Computer applications will be used to process lab data, write lab reports, and simulate circuits.

Course Content (Themes, Concepts, Issues and Skills)

  1. Introduction - SI units, significant figures, powers of 10, scientific and engineering notation, engineering prefixes, unit conversion, use of scientific calculator.
  2. Electrical quantities and instrumentation – voltage, current, charge, energy/work, power, capacity factor, efficiency, ammeters, ohmmeters, voltmeters, power supplies.
  3. Resistance - conductors and insulators, resistance and resistivity, wire tables, temperature effects, ohmmeters, potentiometers.      
  4. Ohm’s Law, Power, Energy – Ohm’s law, graphical analysis of resistance, voltage, and current.           
  5. Series DC Circuits - series circuits, series resistances, voltage and current sources in series, Kirchhoff’s voltage law, voltage dividers, opens and shorts in series circuits, voltage regulation, internal resistance of voltage sources, loading effects, computer simulation of series circuits.
  6. Parallel Circuits - parallel circuits, resistances and sources in parallel, Kirchhoff’s current law, current dividers, opens and shorts in parallel circuits, loading effects, computer simulation of parallel circuits.
  7. Series-Parallel Circuits - series-parallel networks, reduce and return, ladder networks, bridge circuits, shorts and opens in series-parallel circuits, loaded voltage divider circuits.
  8. Analysis Methods - current sources and source conversion, voltage sources and source conversion, bridge networks, delta-wye and wye delta conversion.
  9. Network Theorems – superposition theorem, Thevenin’s theorem, Norton’s theorem, maximum power transfer theorem.