An Interval Timer
(Designing a Printed Circuit Board)

Freshman Module 2
(Electrical Engineering)

Developed by
Robert J. Dirkman
Department of Electrical Engineering

Web Development by
Drew Pommet
Department of Electrical Engineering


Instructor's Guide


In this project, each student builds the following circuit on a prototype board:


Figure 1. Circuit for the Interval Timer

The completed circuit is shown in Figure 2. The three connections shown in black are those that the student is to find on his own. The other connections are given in the Student Guide.


Figure 2. Completed Interval Timer Prototype

In Part 3, the student is required to generate a nominal design graph on 4 cycle loglog paper which is provided. The final graph is shown in Figure 3.

Figure 3. Completed Nominal Design Graph

It is important that, in the competition to be held at the end of the project, enough assistants are available to measure the time intervals and supervise the activity. One assistant should keep track of the three current best times.

In the first running of this project, the three prizes were $25, $10, and $5 gift certificates to the University Bookstore.


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Last Updated: 8/15/96
Dr. Drew Pommet