Experiment 1
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Experiment 1. * Part A: Circuit Basics, Equipment, Sound Waves * Part B: Resistors, Circuit Analysis, Voltage Dividers * Part C: Capture/PSpice. Part A. Circuit Basics Equipment Sound Waves. Automobile Electronics. Previously all mechanical systems have become increasingly electronic

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Experiment 1

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Experiment 1

* Part A: Circuit Basics, Equipment, Sound Waves

* Part B: Resistors, Circuit Analysis, Voltage Dividers

* Part C: Capture/PSpice


Part A

  • Circuit Basics

  • Equipment

  • Sound Waves


Automobile Electronics

  • Previously all mechanical systems have become increasingly electronic

  • Over the past few years, for example, the automobile has begun to use more computers (microcontrollers)

  • How many microcontrollers are typically found in a modern automobile?


Automobile Electronics


Physical Model for a DC circuit


Physical Model for Resistance


Physics vs. Electronics


Ohm’s Law


Alternating Current Generators

http://micro.magnet.fsu.edu/electromag/java/generator/ac.html


AC Circuits


Review of Sinusoids


General form of the Sinusoid


ADJUST VOLTAGE LEVEL

Do Not Use

TOGGLE OUTPUT ON/OFF

-25 to 0 VOLTS

0 to 6 VOLTS

GROUND

GROUND

0 to 25 VOLTS

DC Source E3631A


Function Generator 33120A


Digital Multimeter 34401A


Oscilloscope 54600B


Impedance

  • Definition: a general measure of how a circuit affects the current through it.

  • Impedance = resistance + reactance

  • Impedance is used to refer to the behavior of circuits with resistors, capacitors and other components.

  • In a resistive circuit, impedance=resistance.


Equipment Impedances

  • Each measuring device changes the circuit when you use it.

  • The impedance of the device helps you understand how much.

  • Device Impedances

    • Function Generator: 50 ohms

    • ‘Scope: 1Meg ohms

    • DMM (DC voltage): 10Meg ohms

    • DMM (AC voltage): 1Meg ohms

    • DMM (DC current): 5 ohms (negligible)


Effect of Impedance on Circuit


What to do


How Ears Work

http://members.aol.com/tonyjeffs/text/dia.htm


Part B

  • Resistors

  • Circuit Analysis

  • Voltage Dividers


Combining Resistors in Series


Combining Resistors in Parallel


Reading Resistors

http://www.dannyg.com/javascript/res/resload.htm


Measuring Voltage


Voltage Dividers


More on Voltage Dividers


Kirchoff’s Laws


Circuit Analysis (Kirchoff Method)


Circuit Analysis (Combination Method)


Protoboards


Part C

  • Capture/PSpice

    • Circuit Analysis Software


Capture


Simulations


PSpice


Cursors


Adding Traces


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