This weekly report summarizes the progress of an engineering student group working on a water heater project. It discusses learning about the water heater's measurement and timer functions. It also covers studying LED circuitry, types of LEDs, and connecting an LED driver circuit to control components. The report lists common LED types and provides a brief overview of how LEDs work. It identifies the variety of available LEDs as a strength and challenges in finding some types as a weakness. The next steps are to learn more about LED driver circuits.

1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] March 8, 2012
Name-Surname Mutchima Bangkha
Student ID. 53211824
Group Name Is
Engineering Team Jane, Best, Not, Su, Jum-O, Love, Tew, Go, Nut
Members and Benz
Product Design Sa-tang, Ped, Fon, Tip, Earng [ID] and Mind
Team Members [interior]
Weekly Progress
This week we know about the most functions of our water heater’s that are measure
water using and timer or show time.
For my part ; I was assigned to group with other friends to find and study about the
circuit LED driver circuit and type of LEDs and then connect/support the control part.
LED [Light Emitting Diode] is a semiconductor light that can use as the lamp. There
are many types such as
 Miniature : use as indicators , various sizes and typical rating aroung 1mA to 20mA
 Mid-range : through-hole-mounted , used when output need of few lumen
 High-power : can drive in high current [from 1000mA]
LED Driver Circuit is used to power LED that is conect in series. The LED will have
a voltage drop, specified at the intended operating current.
Sample Type of LEDs How does LED work?
Engineering Analysis
Strong Point
- Variety LED that can choose
Week Point
- Some type hard to find for support
- Be careful about current
Next Week Job
I will learn more about LED driver circuit.
Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI