
20222023 College Catalog [ARCHIVED CATALOG]

ENG 282IN  Basic Electric Circuits 5 Credits, 7 Contact Hours 4 lecture periods 3 lab periods
Introduction to the fundamentals of alternating current (AC) and direct current (DC) circuits. Includes circuit variables, circuit elements, simple resistive circuits, techniques of circuit analysis, the operational amplifier; inductance, capacitance, and mutual inductance; response of firstorder resistorinductor (RL) and resistorcapacitor (RC) circuits, natural and step responses of RLC circuits, and sinusoidal steadystate analysis.
Prerequisite(s): MAT 231 and PHY 216IN . Corequisite(s): MAT 262
Course Learning Outcomes
 Demonstrate competence to apply Kirchhoff’s voltage law/Kirchhoff’s current law (KVL/KCL) to solve single node/loop circuit problems, such a finding an unknown voltage, current of power.
 Demonstrate the ability to apply vi formulae for inductors and capacitors to find voltage when current is specified, and viceversa.
 Demonstrate the ability to apply phasors to find Thevenin/Norton equivalents and solve mesh and mode problems in ac circuits.
 Demonstrate the ability to analyze all circuit responses using PSpice 16 and compare calculated values with laboratory measures values and explain the differences.
 Demonstrate the ability to analyze and test dimmer circuits, buffer circuits, current sources, RL, RC, and RLC circuits with transistors and operational amplifiers (OpAmps).
 Demonstrate the ability to organize and prepare written prelab papers and laboratory reports.
Performance Objectives:
 Apply the passive sign convention to calculate power in an ideal circuit element and state whether the power is being absorbed or delivered.
 Apply parallel, series, and deltawye relationships to find the equivalent resistance of complex resistor networks, and the equivalent source when sources are corrected in series and parallel.
 Use the principles of current and voltage division to design D’Arsonval voltmeters and ammeters, given the desired fullscale readings and any two of the meter movement parameters.
 Apply Kirchhoff’s voltage law/Kirchhoff’s current law (KVL/KCL) to solve single node/loop circuit problems, such as finding an unknown voltage, current or power.
 Write and solve Node Voltage Analysis and Mesh Current Analysis equations for circuits containing dependent and independent sources and resistors.
 Discuss opportunities for applying source transformations and explain why source transformations are useful in circuit analysis.
 Reduce complex circuits to Thevenin (or Norton) equivalent circuits, and explain the physical significance of the internal resistance and voltage (or current) quantities.
 List the essential terminal characteristics of an ideal opamp, and apply these to calculate voltage and current quantities in opamp circuits with and without feedback resistance connected.
 Apply vi formulae for inductors and capacitors to find voltage when current is specified, and viceversa; and find the equivalent component value when multiple capacitors and inductors are connected in series/parallel.
 Explain in both qualitative and quantitative terms why the state variable in an inductor or capacitor resists abrupt change.
 Apply the “FIFE” formula to find the value of any current or voltage in RL and RC circuits with switching events.
 Find the node voltage (parallel RLC) or loop current (series RLC) given a parallel or series resistor/inductor/capacitor (RLC) circuit, the circuit’s initial conditions, and a step excitation.
 Write any given sinusoid as a phasor, and viceversa; and draw phasor diagrams for circuits with R, L and C components.
 Apply phasors to find Thevenin/Norton equivalents and solve mesh and node problems in ac circuits.
 Write the KCL equations for a mutually coupled transformer circuit with source and load.
 Find the unknown currents, voltages, and powers in a given circuit for an ideal transformer circuit with a given turns ratio.
 Calculate the load impedance for an ideal transformer circuit with a given turns ratio to achieve maximum power transfer and explain the concept of transformer use for impedance matching.
 Build simple breadboard circuits consisting of resistors, capacitors, inductors, opamps, and power supplies. Use digital multimeters and oscilloscopes to measure dc and ac currents and voltages, frequency of a periodic waveform, and phase shift between ac waveforms.
 Perform design exercises to satisfy simple specifications (such as a prescribed voltage, current or gain factor), taking into account component tolerances and reasonable measurement accuracy.
 Write programs in PSpice 16 (for Windows) to the level of DC and AC sweeps, parameter sweeps, transient analysis, and switching with initial conditions.
 Organize and prepare written laboratory reports.
 Construct and test, on breadboard, circuits that contain resistors, potentiometers, capacitors, inductors, diodes, transistors, operational amplifiers, D’Arsonval meters, light emitting diodes (LEDs), photodiodes, ac and dc power supplies, voltamp meters, oscilloscopes, frequency generators, and microphones.
 Analyze all circuit responses using PSpice 16 and compare calculated values with laboratory measured values and explain differences.
 Breadboard, analyze and test dimmer circuits, buffer circuits, current sources, RL, RC, and RLC circuits with transistors and operational amplifiers (OpAmps).
 Measure the gain and phase response of simple audio filters and specific discrete frequencies.
 Design and verify an LC crossover network for use with tweeter and woofer loudspeakers.
 Organize and prepare written prelab papers and laboratory reports.
Outline:
 Circuit Variables
 Electrical engineering: an overview
 The international system of units
 Circuit analysis: an overview
 Voltage and current
 The ideal basic circuit element
 Power and energy
 Circuit Elements
 Voltage and current sources
 Electrical resistance (Ohm’s law)
 Construction of a circuit model
 Kirchhoff’s laws
 Analysis of a circuit containing dependent sources
 Simple Resistive Circuits
 Resistors in series
 Resistors in parallel
 The voltagedivider circuit
 The currentdivider circuit
 Measuring voltage and current
 The Wheatstone bridge
 Deltato wye (pito tee) equivalent circuits
 Techniques of Circuit Analysis
 Terminology
 Introduction to the modevoltage method
 The nodevoltage method and dependent sources
 The nodevoltage method: some special cases
 Introduction to the meshcurrent method
 The meshcurrent method and dependent sources
 The meshcurrent method: some special cases
 The modevoltage method verses the meshcurrent method
 Source transformations
 Thevenin and Norton equivalents
 More on deriving a Thevenin equivalent
 Maximum power transfer
 Superposition
 The Operational Amplifier
 Operational amplifier terminals
 Terminal voltages and currents
 The invertingamplifier circuit
 The summingamplifier circuit
 The noninvertingamplifier circuit
 The differenceamplifier circuit
 A more realistic model for the operational amplifier
 Inductance, Capacitance, and Mutual Inductance
 The inductor
 The capacitor
 Seriesparallel combinations of inductance and capacitance
 Mutual inductance
 A closer look at mutual inductance
 Response of FirstOrder RL and RC Circuits
 The natural response of an RL circuit
 The natural response of an RC circuit
 The step response of RL and RC circuits
 A general solution for step and natural responses
 Sequential switching
 Unbounded response
 The Integrating amplifier
 Natural and Step Responses of RLC Circuits
 Introduction to the natural response of a parallel RLC circuit
 The forms of the natural response of a parallel RLC circuit
 The step response of a parallel RLC circuit
 The natural and step response of a series RLC circuit
 A circuit with two integrating amplifiers
 Sinusoidal SteadyState Analysis
 The sinusoidal source
 The sinusoidal response
 The phasor
 The passive circuit elements in the frequency domain
 Kirchhoff’s laws in the frequency domain
 Series, parallel, and deltatowye simplifications
 Source transformations and TheveninNorton equivalent circuits
 The nodevoltage method
 The meshcurrent method
 The transformer
 The ideal transformer
 Phasor diagrams

