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ELEC1111 - Lab Work

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E L E C 1 1 1 1

E L E C 1 1 1 1

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L A B

L A B

W O R K

W O R K

CONTENTS

CONTENTS

Laboratory Expt 

Laboratory Expt –– Intro ... 2Intro ... 2 Laboratory Expt 

Laboratory Expt –– Circuit Construction ... 2Circuit Construction ... 2 Laboratory Expt 

Laboratory Expt –– Voltage Sources and Node Equations ... 3Voltage Sources and Node Equations ... 3 Laboratory Expt 

Laboratory Expt –– RC Transients ... 3RC Transients ... 3 Laboratory Expt 

Laboratory Expt –– Radio Controlled Car ... 4Radio Controlled Car ... 4 Laboratory Expt 

Laboratory Expt –– Power and Energy ... 5Power and Energy ... 5 Laboratory Expt 

Laboratory Expt –– Feedback Control ... 5Feedback Control ... 5 Laboratory Expt 

Laboratory Expt –– AM radio reciever, Crystal Set ... 6AM radio reciever, Crystal Set ... 6 Laboratory Expt 

Laboratory Expt –– A/D & D/A conversion ... 6A/D & D/A conversion ... 6 Laboratory Expt 

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LABORATORY EXPT – INTRO

Things to know:

 Prototyping Board (Appendix 1)

 Reading Resistor color codes (Appendix 2)

 Digital Multimeter (Appendix 3)

 Power Supply (Appendix 4)

 Signal Generator (Appendix 5)

 The Oscilloscope (Appendix 6)

Things to bring:

 Prototyping board

Notes:

1. When using the Precision Resistance Bridge:

a. Make sure you’re measuring resistance not something else

b. There is a button just under the two metal jaws. That button will open the metal jaws. Use it. Pre-Lab:

Section A - Theoretic equivalent resistance:   [() ]   

LABORATORY EXPT – CIRCUIT CONSTRUCTION

Things to know:

 Soldering (Appendix 8)

Things to bring:

 Your entire Lab kit (PCB, Resistors, LED’s, etc.)

Notes:

1. You can build and test your LED circuit on your breadboard instead of soldering it all together 2. Make sure your LED’s are the correct way around

Pre-Lab:

Assemble the amplifier and tape down the components so they don’t fall out during transport. You can solder at  home if you have a soldering iron.

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LABORATORY EXPT – VOLTAGE SOURCES AND NODE EQUATIONS

Things to know:

 V=IR

 Kirchhoff’s Laws

 Node voltage equations

Things to bring:

 Prototyping board  9V Battery

Notes:

1. Your battery will drop in voltage as it is used Pre-Lab:

Section A - i) Load current:   

   

Power dissipated:       Power delivered:      

Power delivered equals power dissipated? Yes - ii) Terminal Voltage: 8.3 A

Current flowing:  

   

Voltage drop:     1.2V Internal resistance:   

   

LABORATORY EXPT – RC TRANSIENTS

Things to know:

 How a capacitor works

Things to bring:

 Breadboard

 LED set 

 Something that can count seconds

Notes:

1. The capacitor won’t be destroyed if it’s non-polarized.

2. You don’t have to do Part C if you don’t want to. However you can get bonus Lab marks which may help cover marks you lost in other labs

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LABORATORY EXPT – RADIO CONTROLLED CAR

Things to know:

 AM, FM, PWM and PPM signals

Things to bring:

 Yourself and the Lab book 

Notes:

1. The radio uses PPM except the oscilloscope will show them as voltage drops Pre-Lab:

You may want to exaggerate the amount of amplitude and frequency modulation. PWM

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LABORATORY EXPT – POWER AND ENERGY

Things to know:

 P=IV

Things to bring:

 3 different colored pens

Notes: N/A Pre-Lab: Result h)

Type Power Light Output  Output/Watt 

(performance)

Incandescent 100 W 1500 Lumens 15 L/W

Compact Florescent 18 W 1400 Lumens 78 L/W

Compact Florescent 9 W 600 Lumens 67 L/W

Quartz halogen 50 W 600 Lumens 12 L/W

LED 5 W 150 Lumens 30 L/W

LABORATORY EXPT – FEEDBACK CONTROL

Things to know:

 Read the information given

Things to bring:

 Your best reaction skills and maybe something that you can use to count seconds

Notes:

1. You can hit pause to draw the graph

2. If you hit pause more than once in the application you may need to click run more than once Pre-Lab:

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LABORATORY EXPT – AM RADIO RECIEVER, CRYSTAL SET

Things to know:

 How a radio works

Things to bring:

 Headphones or the provided headphone in your lab kit 

Notes:

1. For the last question asking how many stations you can get you can just write 0 Pre-Lab:

AM – Amplitude modulation alters and encodes the signal in the varying amplitude of a frequency-constant wave

FM – Frequency modulation alters and encodes the signal in the varying frequency of a amplitude-constant wave

LABORATORY EXPT – A/D & D/A CONVERSION

Things to know:

 What sampling is w.r.t. A/D and D/A conversions

Things to bring:

 Headphones or the provided headphone in your lab kit 

Notes:

1. Do the Prelim reading before the lab, there’s a lot to read

2. Make sure the equipment is wired properly and the wires are as short as possible. Long wires will cause problems.

Pre-Lab: None

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LABORATORY EXPT – INTRODUCTION TO DIGITAL LOGIC

Things to know:

 Logic Gates NOT, AND, OR, NAND, NOR, XOR  Truth tables

Things to bring:

 Yourself and the Lab book 

Notes:

1. Lab not usually done Pre-Lab:

References

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