ECE Intro: Electronics Lab - Kirchoff's Laws, Op-Amps, and Temp Transducers Experiments, Lab Reports of Electrical and Electronics Engineering

The instructional objectives, equipment, and procedures for three experiments in an electrical engineering 1010 lab. Students will investigate kirchoff's current law (kcl) and kirchoff's voltage law (kvl) using resistors, build and test an inverting amplifier circuit, and measure temperature using a transducer. Figures and instructions for each experiment.

Typology: Lab Reports

Pre 2010

Uploaded on 08/19/2009

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EE 1010 – Intro to ECE – Electronics Module
Instructional Objectives:
This module investigates an introductory level understanding of electronics, including
operational amplifiers (op-amps) and temperature transducers.
Equipment:
This lab will utilize the Agilent 34401A Multimeter, Agilent E3631A Power Supply,
Agilent 33120A Function Generator, Agilent 54622D Oscilloscope, and computers with
LabVIEW and data acquisition cards (DAQs).
Procedure:
Conduct the following experiments. Questions may be answered on this sheet or on a
separate piece of paper. If you have any questions regarding the procedure, the concepts,
or the equipment please feel free to ask the instructor or the teaching assistant.
Experiment 1: Kirchoff’s Current Law (KCL) and Kirchoff’s Voltage Law (KVL)
A. Analyze the circuit in Figure 1 to find I1, I2, I3, V1, and V2.
B. Build the three resistor circuit shown in Figure 1.
C. After the circuit is built, turn on the Power Supply and adjust the voltage to
5.0 Volts. Have the TA or instructor check your settings before activating the
Power Supply. Use the Multimeter to measure the Voltage across each of the
resistors. Verify Kirchoff’s Voltage Law. Using Ohm’s Law, calculate the
current through each of the resistors. Verify Kirchoff’s Current Law.
V1 = ______ V2 = ______ I1 = ______ I2 = ______ I3 = ______
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EE 1010 – Intro to ECE – Electronics Module

Instructional Objectives:

This module investigates an introductory level understanding of electronics, including operational amplifiers (op-amps) and temperature transducers.

Equipment:

This lab will utilize the Agilent 34401A Multimeter, Agilent E3631A Power Supply, Agilent 33120A Function Generator, Agilent 54622D Oscilloscope, and computers with LabVIEW and data acquisition cards (DAQs).

Procedure:

Conduct the following experiments. Questions may be answered on this sheet or on a separate piece of paper. If you have any questions regarding the procedure, the concepts, or the equipment please feel free to ask the instructor or the teaching assistant.

Experiment 1: Kirchoff’s Current Law (KCL) and Kirchoff’s Voltage Law (KVL)

A. Analyze the circuit in Figure 1 to find I 1 , I 2 , I 3 , V 1 , and V 2.

B. Build the three resistor circuit shown in Figure 1. C. After the circuit is built, turn on the Power Supply and adjust the voltage to 5.0 Volts. Have the TA or instructor check your settings before activating the Power Supply. Use the Multimeter to measure the Voltage across each of the resistors. Verify Kirchoff’s Voltage Law. Using Ohm’s Law, calculate the current through each of the resistors. Verify Kirchoff’s Current Law.

V 1 = ______ V 2 = ______ I 1 = ______ I 2 = ______ I 3 = ______

Experiment 2: Operational Amplifier

A. Build the inverting amplifier circuit shown in Figure 2. Figure 4 shows how the pins of the operational amplifier are defined. Do not power up the power supply until the TA or instructor has checked your circuit. Use the Function Generator as the input voltage with a frequency of 1000 Hz and an amplitude of 2.0 Vpp (Volts peak to peak). B. Use the oscilloscope to measure the time varying voltage of the input voltage, VIN (channel 1), and the output voltage, VOUT (channel 2). Have both channels set to the same Volts/div setting. Be sure to hook up the oscilloscope probes correctly. Adjust the triggering of the oscilloscope to get a stable display. Carefully sketch the waves displayed below.

C. What is the measured gain of your amplifier?

D. Gradually increase the amplitude of the input voltage. What eventually happens? Why?

Reference Page

Figure 1 – Resistive circuit

Figure 2 – Inverting amplifier circuit

Figure 3 – Temperature transducer circuit

Figure 4 – 741 Op Amp Figure 5 – LM 35 Temperature transducer