01 intro to electronics

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01 intro to electronics

  1. 1. Basic Electronics
  2. 2. Requirement for a Complete Circuit <ul><li>Source </li></ul><ul><ul><li>Battery, Generator, AC Voltage source, Photovoltaics, etc. </li></ul></ul><ul><li>Load </li></ul><ul><ul><li>Light bulb, motor, buzzer, heater, LED, LCD, Digital Circuit, etc. </li></ul></ul><ul><li>Conductors </li></ul><ul><li>Switch </li></ul><ul><ul><li>Slide, momentary, toggle </li></ul></ul>Energizer + _
  3. 3. Schematic Diagrams Energizer + _
  4. 4. TERMS, SYMBOLS AND UNITS OF MEASUREMENT <ul><li>Term Description Symbol Unit of Meas. Symbol </li></ul><ul><li>Charge Quantity of Accumulated Electrons Q Coulombs C </li></ul><ul><li>Voltage Electromotive Force E/V Volts V </li></ul><ul><li>Current Rate of Electron Flow I Amps A </li></ul><ul><li>Resistance Opposition to Electron Flow R Ohms Ω </li></ul><ul><li>Power Rate of doing Electrical Work P Watts W </li></ul>
  5. 7. <ul><li>Flow of Electrons in a copper wire </li></ul>
  6. 8. Using a Multimeter: Measuring Resistance <ul><li>Using the Ohmmeter </li></ul><ul><li>Measures resistance in a circuit. </li></ul><ul><li>The circuit must be “dead.” </li></ul><ul><li>Choose the  setting on the meter. </li></ul><ul><li>Insert the Red (+) test lead into the voltage/  connector on the meter. The black (-) test lead should be in the COM connector </li></ul><ul><li>If the component to be measured is mounted on a printed circuit board then disconnect one end of the component to be measured from the circuit. </li></ul><ul><li>Place the leads of the meter across (in parallel) the component to be measured. </li></ul>
  7. 9. Using a Multimeter: Measuring Voltage <ul><li>Using the Voltmeter </li></ul><ul><li>  1.Measures the electromotive force (voltage) between two points. </li></ul><ul><li>2. The circuit must be “live.” </li></ul><ul><li>3. Choose the AC voltage or DC voltage setting on the meter. </li></ul><ul><li>4. Insert the Red (+) test lead into the voltage/  connector on the meter. The black (-) test lead should be in the COM connector </li></ul><ul><li>5. Place the leads of the meter across (in parallel) the component to be measured. </li></ul>V V
  8. 10. Using a Multimeter: Measuring Current <ul><li>Using the Ammeter </li></ul><ul><li>Measures electron flow (current) in a circuit. </li></ul><ul><li>The circuit must be “live.” </li></ul><ul><li>Choose the AC amperage or DC amperage setting on the meter. </li></ul><ul><li>Move the red test lead from the voltage/  connector to the amperage connector on the meter. </li></ul><ul><li>Break the circuit and place the meter in series with the component to be measured. </li></ul>A
  9. 11. ENGINEERING NOTATION <ul><li>  </li></ul><ul><li>10 12 10 9 10 6 10 3 10 0 10 ‑3 10 ‑6 10 ‑9 10 ‑12 </li></ul><ul><li>____________________________________________ </li></ul><ul><li>Tera Giga Mega Kilo Base milli micro nano pico </li></ul><ul><li>T G M k ohms m μ n p </li></ul><ul><li>amps </li></ul><ul><li>volts </li></ul><ul><li>watts </li></ul><ul><li>SLL‑LSR </li></ul>
  10. 12. Quiz Time!!!!

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