PHYS 30503 - PHYS 3050 Lab Report VI The Transistor as a...

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PHYS 3050 Lab Report VI The Transistor as a Switch Swapnil Agrawal 210049237 3rd December 2009
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Swapnil Agrawal - 210049237 1 Table of Contents 1. INTRODCTION 2 1. Background 2 2. Aim 2 3. Apparatus 2 2. ANALYSIS, CALCULATIONS AND OBSERVATIONS 3 1. Rise and Fall Times 3 2. A NOT Gate 7 3. SOURCES OF ERROR 8 4. CONCLUSION 8 5. REFERENCES 8
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2 INTRODUCTION 1. Background The transistor, like the diode, utilizes the property of the PN junction in a semiconductor. Unlike the diode, the transistor is a three-port device (with the three ports referred to as the Base (B), Collector (C), and Emitter (E). The collector and the emitter regions are similarly doped (either p-type or n-type) while the base is oppositely doped. Hence there are two types of transistors - so called NPN and PNP transistors. The main functions of transistors are as switches and amplifiers. A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits. Logic gates are primarily implemented electronically using diodes or transistors. 2. AIM The purpose of this lab is to understand the characteristics of a simple transistor when it is used as a switch and build a simple transistor logic gate. 3. APPARATUS a) Agilent 33120A function/Arbitrary Waveform Generator b) Agilent 3630A Triple Output DC Power Supply c) Tektronix TDS200 Digital Storage Oscilloscope (DSO) d) Breadboard, Resistors and 2N3904 (NPN) 2N3906 (PNP) Transistor. e)
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This note was uploaded on 12/11/2010 for the course PHYSICS 3050 taught by Professor Menary during the Fall '10 term at York University.

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PHYS 30503 - PHYS 3050 Lab Report VI The Transistor as a...

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