FABRICATING AN EXPERIMENTAL SYSTEM TO AUTOMATICALLY MEASURE I-V CURVES OF SOME DEVICES FOR TEACHING PHYSICS IN HIGH SCHOOL (GRADE 11)

Abstract

Ohm’s law and I-V curves of diode and transistor are some of the most important and basic knowledge in Physics- Grade 11 program. However, those are quite abstract and teachers found it difficult to deliver knowledge to students, therefore, fabricating demonstrative models is an urgent requirement. A new experimental toolkit was built which can measure the I-V curves of resistors, diodes and transistors in a short duration with high precision. In addition, it can also connect with a personal computer via Bluetooth for interacting with users. The measured data are updated automatically onto computer and demonstrated as a graph, which allows students to follow and acquire knowledge by themselves. This experimental system is expected to improve the learning excitement and practical capacity for students.