Eet 110 survey of electronics
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EET 110 – Survey of Electronics. Chapter 1 Basics of Electricity. Introduction. Electrical Systems Diagrams Block (system) Pictorial Schematic Components Source Path Control Load Indicator. Energy, Work and Power. Energy Kinetic Energy Potential Energy Chemical Energy Work

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Eet 110 survey of electronics

EET 110 – Survey of Electronics

Chapter 1

Basics of Electricity


Introduction
Introduction

  • Electrical Systems

    • Diagrams

      • Block (system)

      • Pictorial

      • Schematic

    • Components

      • Source

      • Path

      • Control

      • Load

      • Indicator


Energy work and power
Energy, Work and Power

  • Energy

    • Kinetic Energy

    • Potential Energy

    • Chemical Energy

  • Work

    • Conversion of Energy

  • Power

    • Rate at which work is done


Structure of matter
Structure of Matter

  • Atom

    • Mode of Atom

    • Electrons

    • Nucleus

      • Neutrons

      • Protons

    • Orbit

    • Valence Layer


Electrical charges
Electrical Charges

  • Like charges repel

  • Opposites attract

  • Each charge is surrounded by an electrostatic field


Static electricity
Static Electricity

  • A collection of charged particles accumulated on a material

  • Examples

    • Lightning

    • Dry Montana effect


Electrical current
Electrical Current

  • Movement of electrons – current flow

  • Potential for electrons to flow – voltage or electrical potential

  • Conductors

    • Single electron in valence layer

  • Insulator

    • Full valence layer


Other material
Other material

  • Semiconductors

    • Exactly four electrons in the valence layer

  • Superconductors

    • The Holy Grail of electronics

    • No resistance AT ALL


Electrical circuits
Electrical Circuits

  • Conventional Current Flow

  • Electron flow

  • Charge

    • 1 coulomb = 6.25x1018 electrons

  • Rate of electron flow

    • 1 Ampere or 1 Amp = 1 Coulomb per second


Electro motive force
Electro-Motive Force

  • EMF

  • Voltage

  • Electrical Potential

  • Measured in Volts


Resistance
Resistance

  • The opposition to current flow

  • Dependent on

    • Material

    • Length

    • Area

    • Temperature

  • Measured in OHMS

  • The inverse of conductance (Mhos or Siemens)


Formulas
Formulas

  • Current is given as I

  • Voltage as either V or E

  • Resistance as R


Assignment
Assignment

  • Read Chapter 2 – complete review questions

  • Locate the web page

  • techsci.msun.edu/strizich/index.html