Verizon Next Step Program Course Outline Course Title: Curriculum: ELECTRICAL CIRCUITS Telecommunications Technology: Verizon Credit Hours: 4 Contact Hours: 5 Date of Revision: 6/7-9/04 Valid for F 04 and S 05 Revision Entered By: Prepared By: Curriculum Leader: Electrical Faculty Subcommittee Rainer Weschke Suffolk C. C. 533 College Road Selden, NY 11784 Voice: 631-451-4276 Fax: 631-451-4650 Email: weschkr@sunysuffolk.edu Gary Mullett Springfield Technical C. C. 1 Armory Square Springfield, MA 01105 Voice: 413-755-4600 Fax: 413-734-0515 Email: gmullett@stcc.mass.edu Prerequisite(s): Co-requisite: Course Description: Math 1, Computer None In this course students learn to analyze DC and AC passive circuits using Ohm s Law, Kirchhoff s laws, Thevenin s and Norton s Theorem, and Superposition. RC and RL circuits are analyzed for impedance and phase angles; RLC circuits are analyzed for impedance and resonance. Transformers are used in step-up and step-down configurations. Troubleshooting and 1
analysis by computer simulation using CircuitMaker is stressed throughout. Text(s): 1. Principles of Electric Circuits 7/e, Floyd, Prentice Hall ISBN 0-13-098576-7 2. Optional Lab Manual Experiments in Basic Circuits: Theory and Application 7/e by Buchla / Prentice Hall ISBN: 0130986690 Hardware: Software: Supplemental Resources: Attendance Policy: Laptop computer, Scientific calculator CircuitMaker Microsoft Office Additional software as supplied by Next Step Program Blackboard and the internet are to be used as an integral part of the course delivery process Next Step students are expected to attend all classes. It is the responsibility of the student to make up any material missed due to absence. Course Objectives: Instructors shall make every effort to incorporate the following umbrella competencies: Problem solving, teamwork, project leadership, quality, contextual learning, technology and service delivery, and customer focus. NOTE THAT SUGGESTED TEAMWORK APPROACHES ARE GIVEN IN THE UMBRELLA COMPETENCIES COMMUNITY IN BLACKBOARD In addition students shall demonstrate the following competencies: 1. Use the computer as an analytical tool. Know how to use computer simulation software to solve DC and AC problems, and save or print solutions and graphs. 2. Identify the characteristics of DC and AC sources, and calculate their effect on voltage, current, and power in passive networks. 3. Describe the V-I characteristics of resistors, capacitors, inductors, and utilize these circuit elements with DC and AC excitation. AC circuit analysis shall be based on the use of complex numbers. 4. Given a series, parallel, or series-parallel circuit consisting of any combination of R-L- C components, choose and follow through on one or more of the following methods of circuit analysis: 2
(a) Ohm s Law, Kirchhoff s Voltage Law Kirchhoff s Current Law (b) Voltage divider rule, Current divider rule (c) Thevenin s Theorem, Norton s Theorem (d) Superposition Theorem (e) Internal resistance and the Maximum Power Transfer Theorem 5. Given an RC or RL series circuit driven by a switched DC source, calculate the time constant and any current or voltage at any time as required, using the universal time constant curve. 6. Given a series or parallel RLC circuit driven by a sinusoidal source, calculate: (a) the resonant frequency (b) all currents and voltages (c) circuit Q (d) bandwidth (e) corner frequencies (f) the value of resistance needed to increase the BW to a specified value 7. Explain conventional transformer action in terms of flux linkages, and, given an ideal transformer, calculate: (a) primary and secondary voltages, currents, and power (b) currents and voltages with multiple secondaries (c) currents and voltages for an ideal autotransformer (d) impedance transformations 8. Know how to follow and describe prescribed lab test procedures, set up equipment, take measurements, interpret results, and run computer simulations. Interpret schematic diagrams and construct breadboard circuits. Troubleshoot circuits. 9. Given a supplemental assignment or an activity assignment, know how to develop a technical report (using a computer) in one of the areas described above. (a) use the library, internet and other sources to collect supplemental information to write a technical report which includes an introduction, main body, summary. (b) know how to develop a formal laboratory report including objectives, theory, procedures, equipment, schematics, calculated/ measured data, and conclusion. 10. Given the specifications for a hardware project, students shall make every effort to: (a) select and work productively with other students as partners, using interpersonal skills, and conflict resolution. (b) practice problem solving via the planning and organizing of the project (c) obtain materials needed for the project and construct the unit using schematics, assembly drawings, and appropriate soldering or wiring techniques. 3
(d) (e) (f) test the unit to project specifications, and create necessary documentation, i.e. theory of operation, schematics, assembly drawings, test procedure(s) and instructions on how to use the project. assess the overall quality of the teamwork, and of the project. develop and deliver to his/her colleagues a 10-minute oral presentation. 11. Listen and think critically. Apply mathematical procedures and quantitative methods, logically troubleshoot electronic circuits and propose corrective measures. Course Delivery: Faculty are encouraged to use all available technologies and methodologies to create an active, student centered learning environment appropriate for the adult learner. Evaluation: 1. Three tests on material to date (60 min.) 35% 2. Comprehensive final exam (120 min.) 20% 3. Technical reports 25% 4. Homework 10% 5. Project 10% Topical Outline Notes: 1. Section 4.2.xx of the CID contains extensive information about each of the units listed below. Included are unit goals, performance objectives, key words, and activities that are linked to the course objectives. 2. Section 4.5.1 of the CID identifies Math concepts associated with each of the units listed below. The student may wish to refresh on these concepts prior to class. Week (hrs) Topics Reading Assignment [1 week] VOLTAGE, CURRENT AND Floyd. Sections 2.1 2.8 RESISTANCE Sections 1.1 1.5 Definitions Charge Voltage Current Resistance Color code Electrical and magnetic quantities and their units Review of Scientific notation Protective and control devices Wire 4
Using meters [1 week] OHM S LAW, ENERGY AND Floyd. Sections 3.1-3.8 POWER Ohm s Law Solving problems using Ohm s Law Energy and power Power ratings for resistors Voltage drop Ampere-hour rating [1 1/3 week] SERIES CIRCUITS Floyd. Sections 4.1 4.11 Total resistance Applying Ohm s Law to series circuits Voltage sources in series Kirchhoff s Voltage Law Voltage divider rule Potentiometers and rheostats Grounds Troubleshooting Signal-tracing Opens and shorts [1 2/3 weeks] TEST 1 PARALLEL CIRCUITS Floyd. Sections 5.1 5.10 Nodes and branches Kirchhoff s Current Law Total current Total resistance Conductance Applying Ohm s Law in solving parallel circuits problems Signal tracing Current divider rule Power Troubleshooting [2 weeks] SERIES-PARALLEL Floyd. Sections 6.1 6.9 Total resistance 5
Calculating currents, voltages and power Voltage dividers with resistive loads Bipolar voltage dividers Voltmeter loading Wheatstone bridge Superposition theorem Thevenin s theorem (Norton s theorem) Troubleshooting : Signal tracing a PC board, redrawing circuits [2 weeks] TEST 2 THE SINE WAVE Floyd Chapter 8 Cycle, period, frequency Radians, degrees Peak, peak-peak, rms, effective, average 360, average 180, phase Applying Ohm s Law Applying KCL and KVL Dc and ac superimposed Oscilloscope measurements Function generator : It is suggested that this section is performed with hands-on [1 week] CAPACITORS Floyd. Sections 9.1 9.9 [1 week] TEST 3 Structure and characteristics Energy storage Coulomb s Law Voltage rating, temperature coefficient, leakage Physical characteristics and capacitance Types Labeling In series In parallel Time constant Capacitor in dc circuits Reactance and complex number representation Phase shift Power Testing capacitors LC meter 6
INDUCTORS Floyd. Sections 10.1 10.9 Structure and characteristics Energy storage Faraday s Law Lenz s Law Physical characteristics and inductance Winding resistance and winding capacitance Types In series In parallel Induced voltage Time constant Inductor in dc circuits Reactance and complex number representation Phase shift Power Testing inductors LC meter [1 week] REACTANCE, IMPEDANCE, AC ANALYSIS AC analysis of simple RLC circuits using complex numbers [1 week] RESONANCE Floyd. Section 21.6 Series Resonance: Q CKT, Q COIL, and bandwidth Parallel Resonance: Q CKT, Q COIL, and bandwidth [1 Week] TRANSFORMERS The Basic Transformer Step-Up Transformers Step-Down Transformers Loaded Secondary Reflected Load Matching Load and Source Resistances The Transformer as an Isolation Device [1 Week] REVIEW AND FINAL EXAM 7
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Recommended Laboratory Activities Note: The Lab activities should be modified by the instructor to match progress of the course. Lab Number Description Reference 1. Metric Prefixes, Scientific (Buchla Lab 1 or equiv.) Notation and Graphing Laboratory Meters and Power Supply (Buchla Lab 2 or equiv.) 2. Measurement of Resistance (Buchla Lab 3 or equiv.) Voltage Measurement and Circuit Ground (Buchla Lab 4 or equiv.) 3. Ohm s Law (Buchla Lab 5 or equiv.) Power in DC Circuits (Buchla Lab 6 or equiv.) 4. Series Circuits (Buchla Lab 7 or equiv.) The Voltage Divider (Buchla Lab 8 or equiv.) 5. Parallel Circuits (Buchla Lab 9 or equiv.) Series-Parallel Combination Circuits (Buchla Lab 10 or equiv.) 6 The Superposition Theorem (Buchla Lab 11 or equiv.) Thevenin s Theorem (Buchla Lab 12 or equiv.) 7. The Sine Wave and AC Circuits I 8. The Sine Wave and AC Circuits II 9. The Sine Wave and AC Circuits III 10. Signal-Tracing and Trouble-shooting I (if time permits) 11. Signal-Tracing and Trouble-shooting II (if time permits) 12. Signal-Tracing and Trouble-shooting III (if time permits) 13. Lab Practical Exam (if time permits) 9