PHYS3050 Lab 6 - PHYS3050 Lab 6 The Transistor as a Switch...

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PHYS3050 Lab 6 The Transistor as a Switch By: Aysar Khalid (209728866) Lab Partner: Hassan Chehaitli Submitted on: December 9 th , 2010
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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. Objective 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. Apparatus Item Description Tektronix TDS200 Digital Storage Oscilloscope (DSO) A digital oscilloscope that channels voltage in real-time. Agilent E3630A Triple Output DC Power Supply Provides a direct current power supply. Agilent 33120A Function/Arbitrary Waveform Generator A waveform/function generator. Breadboard, resistors, NPN 2N3904 and PNP 2N3906 transistors, red and green LEDs Procedure Please see the lab manual.
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