Lab1Report

docx

School

Purdue University *

*We aren’t endorsed by this school

Course

227

Subject

Electrical Engineering

Date

Feb 20, 2024

Type

docx

Pages

Uploaded by ElderEnergy1716

ECET 227 Professor Nawrocki Lab 01 Wall-Warts Report 1/12/2024 Objectives The Goal of this laboratory experiment is to use the function generator to produce a specified logic and sine wave, and investigate the unloaded and loaded voltage, current, and waveforms from two 120 V AC input plug-in wall-warts. Approach and Results 1. Function Generator and Oscilloscope Familiarization In this procedure a BNC-BNC cable from the oscilloscope’s CH1 is connected to the Sync connector of the function generator. The other end of the BNC-BNC cable is connected to CH3 of the function generator. The oscilloscope was turned on and the default setup was pressed. A sine wave was produced with a frequency of 1 kHz and 3.5 V RMS . Figure 1.1 shows the waveforms created as well as their measurements. Figure 1.1 Waveforms and measurements Page 1 of 5

ECET 227 Professor Nawrocki Lab 01 Wall-Warts Report 1/12/2024 2. Plug-in Power Supplies (Wall-warts) Wall-warts A and C were tested in this procedure. The following circuit in Figure 2.1 was created with a 1-amp fuse, two banana grippers for connections from the load box and a BNC- BNC was used to power the circuit. Professor R. Nawrocki. Purdue Brightspace Online Learing System . Purdue ECET Department, Purdue U, January 12, 2024. Web. January 12, 2024 Figure 2.1 Wall-wart Test Circuit The given load box had a maximum load resistance of 131 Ohms. We measured our wall- warts with Rloads of 33, 68, 101, 131 Ohms respectively. The data collected from wall-wart A is shown in Table 1 and Table 2 and the oscilloscope output is in Figure 2.2 and the data from wall-wart C is shown in Table 3 and Table 4 the oscilloscope output is in Figure 2.3 Table 1 Wall-wart A Letter Code A Model WAU16-1000 + Output (Center, Outer, Na) Center Signal Type (AC) Voltage (V) Current (A) Input AC 120 Output AC 16 100mA Page 2 of 5

ECET 227 Professor Nawrocki Lab 01 Wall-Warts Report 1/12/2024 Table 2 Wall-wart A Performance Data Letter Code Current (mA) Vrms Rload (Ω) Vpp Vmean (mV) minimum 18 131 53.5 -250 250 17.1 33 51.1 -233 500 17.7 68 52.7 -242 750 17.9 101 53.5 -223 Figure 2.2 Wall-wart A Output Table 3 Wall-wart C Page 3 of 5

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

ECET 227 Professor Nawrocki Lab 01 Wall-Warts Report 1/12/2024 Letter Code C Model PSC12R-120 + Output (Center, Outer, Na) Center Signal Type (DC) Voltage (V) Current (A) Input AC 100-240 0.5 Output DC 12 1 Table 4 Wall-wart D Performance Data Letter Code Current (mA) Vrms (V) Rload (Ω) Vpp (V) Vmean (V) minimum 12 131 0 12 250 12 33 0 12 500 12 68 0 12 750 12 101 0 12 Figure 2.3 Wall-wart C Output Analysis and Conclusions Page 4 of 5

ECET 227 Professor Nawrocki Lab 01 Wall-Warts Report 1/12/2024 1. The reasoning you need actual component values next to the circuit schematic to make sure that you have the correct components as well as to see the differences between the real and theoretical values of the components. For those following your work they will also be able to see how you got your results. 2. A. The major difference between these two wall-warts is that wall-wart A is an Alternating Current power supple while wall-wart C is a DC power supply. Wall-wart A output was around 18 Volts while Wall-wart C was a near stable 12 Volts. Both of these power supplies were center output as well. B. 1. Power a Arduino i. Wall-wart C is best suited to an Arduino because they are designed to be powered by 12 Volts DC. 2. Create a Low Frequency Tone i. The DC wall-wart would be better suited for this task due to outputting a constant voltage. 3. Drive an electric drill motor i. Wall-wart C would be the best option due to most electric drills running off DC motors as well as being able to supple a constant voltage allowing the drill to constantly run. Page 5 of 5