1. NuttapongHansiriwattanakit submitted a weekly report for their multidisciplinary workshop group on their product design. 2. The group tested a water heater circuit using variable resistors and measured the temperature at different resistor values. 3. In their engineering analysis, their strong point was understanding how the water heater circuit operates using a variable resistor to control voltage and temperature, while their weak point was needing to study the boiler datasheet to determine the proper voltage for temperature control.

1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] April 5, 2012
Name-Surname NuttapongHansiriwattanakit
Student ID. 54261508
Group Name Is
Engineering Team Jane , Best ,Not ,Su ,Jum-O ,Love , Tew ,Go ,Mut and
Members Benz
Product Design
Sa-tang ,Ped ,Fon ,Tip ,Earng[ID] and Mind [interior]
Team Members
Weekly Progress
I ,Jum-O and Love the test circuit of Toshiba. Result, when resistor Increase to be the lowest
temperature C and when resistor decrease to be maximum temperature C. We have a
fixed value resistor but we change to variable resistor. Which do not affect the temperature.
Figure 1.Water heater circuit Figure 2.Test circuit
Engineering Analysis
Strong Point
- I know operation water heater circuit. Machine works by using the variable resistor to
control the voltage to boiler.
Week Point
- I think must study that the boiler datasheet because will I know to must use voltage for
control temperature.
Next Week Job
Next week I will use display circuit and the control circuit is connected water heater circuit.
Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI