Download ELE 202 - Electrical, Computer & Biomedical Engineering

INTRODUCTION
About the Labs
There are eight required laboratories for ELE 202. Lab 1 begins on Monday of the second week of the
semester. We will proceed at a pace of one lab every 1-2 weeks. The duration for each lab is specified in the lab
description that follows. Depending on the enrollment you will likely have one or two classmates as your lab
partners. You will work as a team on one of the six benches in the Digital Electronics Lab (Kelley 120). However,
each of you must submit individual lab reports without collaboration with others. Therefore, you should
understand every detail although you work as part of the team. Make sure that you record all the data and graphs
necessary for the report. A lab report will be prepared for each lab and due one week after the completion of
each lab.
About the ELE202 Recitation
You need to register for one of the ELE 202 recitation sessions, because the 1 credit goes with a recitation
session, not the lab itself. Starting from the fall 2000 semester the recitations will be used as office hours of the
teaching assistants and instructors to answer student’s individual questions.
About the Design Project
After you finish the eight required laboratories, you will apply the knowledge you have learned to a design project.
The project specification may read something like this: Design the control logic for a programmable electronic
lock. At the moment this may not make much sense to you. Hopefully around midterm you will identify a topic for
your project and begin to specify the steps towards solving it. The procedure and ideas for the design project will
be given and discussed in the ELE202 recitation sessions. The project will be conducted in five phases: 1)
proposal, 2) abstract, 3) oral presentation, 4) demonstration, and 5) documentation (written report).
About Electrical Safety
Improper connection of circuitry or
improper use of electronic instruments can
cause severe consequences including
damage of circuit components, damage of
electronic instruments, fire, injury, and
even death. The table on the right
summarizes the hazards caused by the
different levels of electrical current flowing
through the human body.
Current Through
Human Body (Amperes)
1
burns - 1~5 A
severe burns
breathing stops
death
0.1
0.01
extreme breathing difficulties
breathing upset
labored breathing
severe shock
muscular paralysis
cannot let go
painful
mild sensation
ventricular fibrillation
100~300 mA
maximum let-go
current -10 mA
maximum harmless
current - 5 mA
threshold of sensation
0.001
perception threshold 1 mA