How a Power Supply Works

• Review of fundamental concept - Complete Circuit - and electron flow in Direct Current
• What is a Schematic Circuit Diagram

• Function of Components of a Power Supply
  • Transformer
    • What is AC
    • How AC is produced
      • moving a magnet near a coil creates voltage (electrical potential)
    • the electromagnet
      • moving electricity in a coil of wire creates an electromagnet
    • How these two concepts work together in a transformer
    • Oscilloscope demo - showing voltage vs time of AC
  • Switch types
    • SPST
    • SPDT
    • DTSP
    • DPDT
  • Diode
    • one way valve for electron flow
    • polarity
    • full wave circuit comparison to check valve - full wave rectification
    • pulsing output description and demo with oscilloscope
  • Capacitor C1
    • what is a capacitor physically
    • brief description of how it works, effect on output perhaps an oscilloscope demo here
    • polarized capacitors
  • Voltage Regulator
    • regulates output to exactly 5VDC
  • Capacitor C2
    • helps smooth the voltage during fast switching
    • non polarized
  • LED
    • all diodes give off light - but these are optimized for that purpose
    • polarity
  • Resistor
    • Limits current to LED
    • Resistor Colour Codes
    • Resistance measurement