Circuits Lab ENGR 1181 Lab 3.

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Presentation transcript:

Circuits Lab ENGR 1181 Lab 3

Circuits in the Real World All engineering fields employ electronic circuits – electric cars, biomedical devices, computers, traffic controls, sensors, electronic displays, and cell phones.

Today's Learning Objectives After today's class, students will be able to: Recognize and assemble series and parallel circuits. Construct electric circuits using a breadboard. Demonstrate how voltage, current and resistance are measured. Identify and use Ohm’s Law, Power Law, Kirchhoff’s Current Law and Kirchhoff’s Voltage Law. Calculate and measure the equivalent resistance of electric circuits. Employ the proper circuit configuration for a given scenario.

Circuits Lab Setup P. 4

Breadboard Layout P. 5

Task 1 – Measure Resistance Values Insert 100 Ohm, 200 Ohm and 300 Ohm Resistors as shown (across the gap). Connect the DMM as shown. Set DMM on the Ohms scale. Connect the DMM Probe Wires to measure the values of all three resistors. Record the measured values in the Excel Worksheet. Created 7/19/10 to incorporate new voltmeter – R.C.Busick Mention the fact that once the AC adapter is plugged in, the upper horizontal row connected through a red wire on the bread board would be @ 5V (positive end) And the lower Horizontal row connected through the black wire would be @ ground. This would be helpful for tasks 3 and 4. P. 6

Task 2 – Measure the Voltage across the 100 Ohm Resistor Schematic Diagram: Close-up View: Breadboard Connections

Tips for Success To avoid common problems, be sure that … the power strip is on and plugged in. all wires are connected. the LED is placed with proper polarity. the circuit is connected to the main 5V power source. all wires and resistors are exactly aligned. measured values for resistances are used in equations. the 200W resistor is in series with the LED.

Important Takeaways Using Ohm's Law and Kirchhoff's Laws you can measure and calculate resistance, voltage, current and power consumed is any electrical circuit.

Topic Document Type Circuits Marble Delivery System None Quality and Productivity Executive Summary Circuits Solar Meter -- Solar Cell Memo (Combined) Beam Bending Memo Wind Turbine 1 Wind Turbine 2 Report (Combined) Problem Solving Project 1 Project Notebook (Combined) Problem Solving Project 2 Problem Solving Project 3

Extra Slides for Circuits Lab The following slides are available for instructors to explain Tasks 3 through 6 setups and measurements as needed. P. 11

Task 3 – The Series Circuit P. 12

Task 4 – The Parallel Circuit

Task 5 – The Series-Parallel Circuit

Task 6 – The LED Circuit P. 15