Lab2 - 1. Introduction The purpose of this report is to...

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1. Introduction The purpose of this report is to give methods for gaining experience in testing voltage, current, and power across and through DC series, parallel, and series-parallel combination circuits. This is accomplished three ways: by implementing Ohm’s Law, by using circuits on a breadboard in combination with a DMM and a DC power supply, and then finally by simulating the circuits in PSPICE. Ohm’s Law The objective of this section was to put into effect Ohm’s Law on three different circuits. This provided an expected range of values to be gathered from the other two sections of the experiments. Breadboard The objective of this section was to build three DC circuits on a breadboard, and thereby verify Ohm’s Law through the use of physical resistors while also gaining experience in the use of the laboratory’s Digital Multimeter and DC Power Supply. PSPICE The objective of this section was to give extra confirmation to the previous sections by giving the task of simulating the DC series, parallel, and series-parallel combination circuits. 2. Background Keithley Model 175 Digital Multimeter (DMM) This device was used to measure resistance values of 750Ω, 1.5kΩ, and 3.0kΩ resistors. This device was also used to measure voltage across the resistors and current through them. Joshua Dean ECE 11-34 Lab Report Experiment 2
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Agilent E3631A Triple Output DC Power Supply This device was used as a DC Power Supply for the circuits built on the breadboard. PSPICE PSPICE stands for Personal Simulation Program with Integrated Circuit Emphasis. This program is used to simulate analog and digital circuits on a computer [1]. Percentage Error Equation 2.1 is used to calculate Percentage Error. NV is the Nominal Value while MV is the Measured Value. 3. Materials Keithley Model 175 Digital Multimeter (DMM) Banana to mini-grabber test leads Solderless Breadboard Agilent E3631A Triple Output DC Power Supply Resistor Resistor R1, 750Ω Resistor R2, 1.5kΩ Resistor R3, 3kΩ 4. Experimental Procedures 4.1 DC Series Circuit Measurements 4.1.a The first step in this experiment was to build the following circuit on a breadboard: Joshua Dean ECE 11-34 Lab Report Experiment 2
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4.1.b The Agilent E3631A Triple Output DC Power Supply was used as the VS1 source supplying 9Vdc, measured by adjusting the dial. The power supply from the Agilent E3631A was set to come from the +25V terminals. As Figure 4.1 shows, R1 (750Ω) was connected in series with R2 (1.5kΩ). At this point, the output from the Agilent was turned off as the connections to the breadboard were made. The Agilent and Circuit shown in Figure 4.1 were connected using the Banana to Mini-Grabber test leads. The Agilent’s output was then turned on and voltage was applied across the circuit. 4.1.c
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This note was uploaded on 11/14/2011 for the course ECE 11 taught by Professor Korman during the Fall '08 term at GWU.

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Lab2 - 1. Introduction The purpose of this report is to...

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