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EET 110 – Survey of Electronics

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

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  1. EET 110 – Survey of Electronics Chapter 1 Basics of Electricity

  2. Introduction • Electrical Systems • Diagrams • Block (system) • Pictorial • Schematic • Components • Source • Path • Control • Load • Indicator

  3. Energy, Work and Power • Energy • Kinetic Energy • Potential Energy • Chemical Energy • Work • Conversion of Energy • Power • Rate at which work is done

  4. Structure of Matter • Atom • Mode of Atom • Electrons • Nucleus • Neutrons • Protons • Orbit • Valence Layer

  5. Electrical Charges • Like charges repel • Opposites attract • Each charge is surrounded by an electrostatic field

  6. Static Electricity • A collection of charged particles accumulated on a material • Examples • Lightning • Dry Montana effect

  7. 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

  8. Other material • Semiconductors • Exactly four electrons in the valence layer • Superconductors • The Holy Grail of electronics • No resistance AT ALL

  9. 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

  10. Electro-Motive Force • EMF • Voltage • Electrical Potential • Measured in Volts

  11. Resistance • The opposition to current flow • Dependent on • Material • Length • Area • Temperature • Measured in OHMS • The inverse of conductance (Mhos or Siemens)

  12. Formulas • Current is given as I • Voltage as either V or E • Resistance as R

  13. Assignment • Read Chapter 2 – complete review questions • Locate the web page • techsci.msun.edu/strizich/index.html

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