Mini-Projects*:

Christmas Ornament

Goal: To build simple circuits, which include flashing lights or/and simple sounds, that can be used as an ornament on an indoor Christmas tree.

Academic Level: Sophomore

Learning Outcomes:

· To learn and implement simple 555 timer circuits

· To learn and implement LED driver circuits: Both BJT and FET

· To learn and implement simple power supply design circuit

o Based on current requirement, which circuit will work?

· To build circuits on prototype boards for final implementation

o Soldering exercise

o System testing and troubleshooting

· To boost confidence, in circuit design, through simple experiential learning projects

Ornament 1:

· Creator: Christopher Eakins

o Advisor: Dr. Rohit Dua

· System

o 555 timer: Astable mode

o Two LED driver circuits

§ BJT

§ MOSFET

o Power supply: Series pass voltage regulator

YouTube Video: Click the above image

*Experiential learning projects for Sophomore level undergraduate students