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Presentation of dig. electronic.


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Presentation of dig. electronic.

  1. 2. <ul><li>Topics </li></ul><ul><li>BJT’S </li></ul><ul><li>The Eber’s Moll Model </li></ul><ul><li>Need And Importance </li></ul><ul><li>Circuit Design </li></ul><ul><li>Diode equations </li></ul><ul><li>Collector, Emitter and Base Current Equations </li></ul>
  2. 3. Bipolar Junction Transistor BJT’s
  3. 4. Bipolar Junction Transistor <ul><li>Definition </li></ul><ul><li>Why named so </li></ul><ul><li>Uses </li></ul><ul><li>Charge flow in a BJT </li></ul><ul><li>Classified as minority carrier devices </li></ul><ul><li>Types </li></ul><ul><li>NPN </li></ul><ul><li>PNP </li></ul>
  4. 5. Ebers Moll Model
  5. 6. ABOUT SCIENTISTS <ul><li>JIM EBERS AND JOHN MOLL </li></ul><ul><li>Invented this model for Bipolar Junction Transistor which describes the four regions of operation on the B-E voltage Verses B-C voltage </li></ul>
  6. 7. The Ebers Moll Model
  7. 8. Need And Importance The need and importance of using this model is that it is valid and useful to let the transistor work or to check its working behaviour in all the four modes of operation either active ,R.A (reverse active) ,cut off ,saturation which no other model or device will do.
  8. 9. Circuit Desig n :
  9. 10. Derivation: For NPN
  10. 11. <ul><li>Ebers moll model with its </li></ul><ul><li>collector </li></ul><ul><li>Emitter and </li></ul><ul><li>Base currents </li></ul>