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View Resource What is Ohmic? I-V Characteristics of a Diode vs. a Resistor

The Materials Science and Technology Teacher's Workshop (MAST) provides this activity as a vehicle to examine the I-V characteristics of a diode versus a resistor. The exercise will measure the voltage drop across both a diode and a resistor as voltage is varied. The students will then discover the relationship between current and voltage. The lesson includes step by step directions for the...

View Resource Working with LEDs: Estimating Semiconductor Band Gap Using LEDs

The Materials Science and Technology Teacher's Workshop (MAST) provides this activity for classes learning about semiconductors and LEDs (light-emitting diodes). The class will observe visible LEDs in simple electrical circuits, relate the composition of semiconductor materials with their behavior and estimate the band gap of a semiconductor material. The lesson includes step by step...

View Resource Electronic Familiarity: Identification of Electronic Components Experiment

The Materials Science and Technology Teacher's Workshop (MAST) provides this lesson plan which will help students understand the characteristics of basic electronic devices such as diodes, rectifiers, photocells, thermistors, integrated circuits and transistors. The students will get the chance to examine different types of devices with a hand lens magnifier, microscope or stereoscope (depending...

View Resource Formation of a PN Junction Diode and its Band Diagram

This webpage includes an animation of a formation of a PN Junction Diode and its Band Diagram. This interactive applet is a good way to help students see the relationship.

View Resource Simple Diode Rectifier Circuit

This website from the Thayer School of Engineering at Dartmouth College features an animation of a simple diode rectifier circuit. A rectifier is an electrical device that converts alternating current (AC) to direct current (DC), a process known as rectification.

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