ET212_Week 2 Lab_IngramJ

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Grantham University *

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ET212

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Electrical Engineering

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Jan 9, 2024

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Jason Ingram GID: G00151729 Lab 2: Half Wave Rectification Grantham University Date: 11/01/2023
Introduction: The purpose of this lab is to construct a working half wave using both Multisim and the myDAQ hardware. The first step of this lab is to construct the half wave in Multisim then build the half wave using the breadboard and the myDAQ hardware. The expected results using both Multisim and the hardware should be similar if not exact. Once the lab has been completed there will be some review questions that need to be answered: What is the purpose of having a half-wave rectifier in the circuit? Describe the procedure in this lab to arrive at the final design of both the hardware portion and the software portion to achieve the design objectives? Discuss the impact of having the capacitor on the output voltage and the effect of additional load on the ripple voltage. How is the output of the full-wave rectifier different from half-wave rectifier? Equipment/Components: Multisim 10:1 center-tapped transformer 2 diodes (1N4001) 2 2.2kΩ resistors 1 100µF, 50V electrolytic Capacitor 1 fuse (any rating) Function generator Arbitrary Waveform Generator Tektronix oscilloscope Breadboard NI myDAQ Instrument Device Screw Driver Screw Terminal connector Jumper Wires Procedure: The first program that is being used to perform this lab is Multisim: The first step of this lab is to first construct the half wave rectifier using Multisim. We will be using the function generator that is provided to show the AC input of 30Vrms (but will be converting to peak voltage) while using a center tapped transformer to obtain Vsec (with a 10:1 ratio the Vsec should be 3 Vrms). The tolerance of all resistors will be set at 20% tolerance. The second step is to connect the Tektronix oscilloscope. We want channel 1 to be across the secondary output of the transformer and channel 2 to be across the load resistor. Once this is set up, we will observe the waveforms Vsec and Vload. The third step is to produce a steady DC from a rectified AC output. In order to do this, we will add a filter, and connect a 100µF capacitor in parallel with the load resistors. Once this is set up, measure, and plot the peak-to-peak ripple voltage, measure the ripple frequency, and finally table all the data that was gathered and compare results with and without the filter capacitor. The second program that is being used to perform this lab is myDAQ: The first step is building the circuit on the breadboard using voltage Vsec as the input. The diode and load resistors should be put in R L series. The next step is to use jumper wires to connect the breadboard to the hardware to help analyze the circuit. The third step is to channel AO0 on the hardware to provide the input and channel AI0 to measure the output voltage. Using the function generator from the hardware, provide the input to the circuit, and using the oscilloscope measure the
output voltage across the load. As we did in the Multisim portion of the lab, use a filter to help produce a steady DC from a rectified AC output. To do this, connect the 100µF capacitor in parallel with the load resistor. The final step is to measure and plot the peak-to-peak ripple voltage, measure the ripple frequency, and table the data that was gathered and compare the results that we obtained with and without the filter capacitor. Calculations: V P ( out ) = V RMS 0.707 V P ( ¿ ) = V RMS 0.707 V P ( out ) = 3 v 0.707 V P ( ¿ ) = 30 v 0.707 V P ( out ) = 4.24 V V P ( ¿ ) = 42.43 V Function Generator V sec = V p ( out ) 2 V sec = 4.24 2 V sec = 8.48 V pp
Circuit design: Multisim Circuit Design: Part A
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