31-10-2012, 02:30 PM
ECE 212 ELECTRICAL ENGINEERING LABORATORY II
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Faculty Coordinator Responsibilities
The faculty coordinator should insure that the laboratory is properly equipped, i.e., that the teaching
assistants receive any equipment necessary to perform the experiments. The coordinator is
responsible for supervising the teaching assistants and resolving any questions or problems that
are identified by the teaching assistants or the students. The coordinator may supervise the format
of the final exam for the lab. He/she is also responsible for making any necessary corrections
to this manual. The faculty coordinator is responsible for insuring that the software version of the
manual is continually updated and available.
Lab Policy and Grading
The student should understand the following policy.
ATTENDANCE: Attendance is mandatory and any absence must be for a valid excuse and must
be documented. If the instructor is more than 15 minutes late, students may leave the lab.
LAB RECORDS: The student must:
1. Perform the Pre-Lab assignment by the beginning of each lab, and
2. Keep all work in preparation of and obtained during the lab in an approved NOTEBOOK,
and
3. Prepare a lab report on selected experiments.
GRADING POLICY: The final grade of this course is based on the following:
Laboratory notebook and in-class work
Lab Pre-lab
Lab reports
Final exam
In-class work will be determined by the teaching assistant, who, at his/her discretion may use
team evaluations to aid in this decision. The final exam should contain a written part and a practical
(physical operations) part.
PRE- and CO-REQUISITES: The lab course is to be taken during the same semester as ECE
262, but receives a separate grade. If ECE 262 is dropped, the ECE 212 must be dropped
also. Students are required to have completed ECE 202, MTHSC 206 and PHYS 221 with a
C or better grade in each. Students are also assumed to have completed a programming class
and be familiar with the use of a computer-based word processor application program.
THE INSTRUCTOR RESERVES THE RIGHT TO ALTER ANY PART OF THIS
INFORMATION
AT HIS/HER DISCRETION IF CIRCUMSTANCES SHOULD DICTATE. Any changes
should be announced in class and distributed in writing to the students prior to their effect.
ECE 212 ix January 2010
Course Goals and Objectives
The Electrical Circuits Laboratory II is designed to provide the student with the knowledge to
use basic measuring instruments and techniques with proficiency. These techniques are designed
to complement the concepts introduced in ECE 262. In addition, the student should learn how to
effectively record experimental results and present these results in a written report. More explicitly,
the class objectives are:
1. To gain proficiency in the use of common measuring instruments;
2. To enhance understanding of advanced electric circuit analysis concepts.
Inductance, Capacitance, and reactance
AC voltage and current addition. Phasors
AC power (real and reactive, instantaneous and average)
Series and parallel resonant circuit behavior
Passive Filters
Transfer functions
Transformers
Two-port network analysis;
3. To develop communication skills through
a) maintenance of succinct but complete laboratory notebooks as permanent, written
descriptions of procedures, results, and analyses,
b) verbal interchanges with the Laboratory Instructor and other students, and
c) preparation of succinct but complete laboratory reports;
4. To compare theoretical predictions with experimental results and to resolve any apparent
differences.
Use of Laboratory Instruments
One of the major goals of this lab is to familiarize the student with the proper equipment and
techniques for making electrical measurements. Some understanding of the lab instruments is
necessary to avoid personal or equipment damage. By understanding the device's purpose and
following a few simple rules, costly mistakes can be avoided. You have already, in ECE 211,
learned these rules, but they are repeated for convenience and emphasis below. Most of the instrumentation
used in this laboratory is implemented through National Instruments NI-ELVIS II
breadboard and circuit analysis system.
For details about the NI-ELVIS instruments, refer to the ELVIS Operation Manual at
In general, all devices have physical limits. These limits are specified by the device manufacturer
and are referred to as the device RATING. The ratings are usually expressed in terms of voltage
limits, current limits, or power limits. It is up to the engineer to make sure that these ratings
(limit valves) are not exceeded in device operation. The following rules provide a guideline for
instrument protection.
Instrument Protection Rules
1. Set instrument scales to the highest range before applying power.
2. When using an oscilloscope, especially one with a cathode ray tube, do not leave a bright dot
or trace on the screen for long periods of time. To avoid burning the image into the screen,
reduce the intensity until the dot or trace is barely visible.
3. Be sure instrument grounds are connected properly. Avoid accidental grounding of "hot"
leads, i.e., those that are above ground potential. (See especially “Avoiding Grounding Errors
with Oscilloscope” in Appendix C.)
4. Check polarity markings and connections of instruments and components carefully before
connecting or turning on power.