NNIN Education Portal
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National Nanotechnology Infrastructure Network
Nanotechnology Education
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Introducing LEDs, Thermistors, and Transistors A lesson in five consecutive parts. Introduction: Units of LEDs, Thermistors and Transistors Lesson 1: Ohm's Law With Light Bulbs and LEDs The purpose of this activity is to illustrate ohmic and non-ohmic materials in a simple series circuit. Lesson 2: The Effect of Temperature on the Electrical Resistance Properties of a Thermistor A thermistor is a semiconductor, a group of materials classified as having properties of both conductors and insulators. This experiment illustrates how temperature affects electrical resistance of a semiconductor. Lesson 3: Thermistor Circuit The purpose of this activity is to show a thermistor’s usefulness within a circuit. This activity will introduce thermistors in a circuit so that future activities may build upon this idea to conclude with micro/nano-circuits. Lesson 4: LED Circuit Combination The purpose of this activity is to show an LED in a circuit. This activity will introduce diodes in simple circuits so that future activities may build upon this idea to conclude with micro/nano-circuits. Lesson 5: Transistors as Switches and Amplifiers The purpose of this activity is to become familiar with transistors and their uses as switches and amplifiers. |
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