E1 Experiment 3

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School

University of Central Florida *

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Course

3007

Subject

Electrical Engineering

Date

Jul 1, 2024

Type

docx

Pages

9

Uploaded by Ambassador_Water_Mantis4

Experiment II: Laboratory Partners: Roman, Mary Data Extracted Date: 02/13/24 – 02/27/24 Introduction: This experiment was designed with the intentions to teach the basics of transistor biasing and their implementations in building circuits. Equipment: 2N222 Transistors Multimeter DC Power Supply AC Waveform Generator Oscilloscope Breadboard Pre-Laboratory Results:
Experimental Procedures: The implementation of experiment III requires the use of a 2N222 transistor to design and build three circuits. The first two designs were prepared in the pre-laboratory. The third part of this experiment required calculating the values for R 1 and R 2 in order to build the circuit. Then according to the designs of the lab manual each circuit was built on a breadboard. Then the first two circuits were tested using the multimeter to find the Q points. The third part required the use of the oscilloscope to measure the Q point. The theoretical results should be similar to the theoretical designs created in Multisim. Calculations & Simulations: Figure Ia: Figure Ia is a simple transistor design using a Voltage Common Collector to power the design. The diagram from the lab manual can be seen below: In finding the theoretical calculations for this circuit the design was simulated in Multisim first. Once tested the theoretical voltage difference results would be found. These results can be seen below:
Figure Ia as designed in Multisim Figure Ib: The next circuit in the lab manual was a simple transistor circuit, but in this circuit two voltage sources were applied. The lab manual and Multisim design can be seen below:
Figure Ib as designed in Multisim Figure III: Figure III is a transistor circuit that is more complex. As seen in the lab manual design below, this circuit requires the use of AC source, capacitor, and a Voltage Common Collector. To begin designing the circuit, the circuit was tested in Multisim, which can be seen below along with the waveform graph: The design was tested in Multisim to verify the theoretical values of the circuit. The Multisim design and waveform can be seen below:
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