There are two types of basic transistor out there: bi-polar junction (BJT) and metal-oxide field-effect (MOSFET). Applications II: Amplifiers - More application circuits, this time showing how transistors are used to amplify voltage or current.Applications I: Switches - Application circuits showing how transistors are used as electronically controlled switches.Operation Modes - An overview of the four possible operating modes of a transistor.Extending the Water Analogy - Going back to the water analogy to explain how a transistor acts like a valve.Symbols, Pins, and Construction - Explaining the differences between the transistor's three pins.This tutorial is split into a series of sections, covering: We won't dig too deeply into semiconductor physics or equivalent models, but we'll get deep enough into the subject that you'll understand how a transistor can be used as either a switch or amplifier. Covered In This TutorialĪfter reading through this tutorial, we want you to have a broad understanding of how transistors work. In quantities of thousands, millions, and even billions, transistors are interconnected and embedded into tiny chips to create computer memories, microprocessors, and other complex ICs. In small, discrete quantities, transistors can be used to create simple electronic switches, digital logic, and signal amplifying circuits.
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