# Experiment 1 - PowerPoint PPT Presentation

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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?

### Alternating Current Generators

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

### General form of the Sinusoid

Do Not Use

TOGGLE OUTPUT ON/OFF

-25 to 0 VOLTS

0 to 6 VOLTS

GROUND

GROUND

0 to 25 VOLTS

### 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)

### How Ears Work

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

### Part B

• Resistors

• Circuit Analysis

• Voltage Dividers

### Part C

• Capture/PSpice

• Circuit Analysis Software