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How Diodes work?

  1. Jul 14, 2006 #1
    I do not know much about diodes and I wanted to know if someone could explain me how do semi conductor diodes work and how do we determine in a circuit(dc and ac) the input voltage and the output voltage...
     
  2. jcsd
  3. Jul 14, 2006 #2

    SGT

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  4. Jul 14, 2006 #3

    berkeman

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    Staff: Mentor

    The wikipedia entry for diodes is pretty good:

    http://en.wikipedia.org/wiki/Diode

    It's important to have the V-I plot of a diode in your head when you are working on problems that include diodes. You should learn the diode equation

    [tex]I = I_s (e^{\frac{qV}{kT}} -1)[/tex]

    and learn about the reverse breakdown characteristic (used in Zener diodes, for example).
     
  5. Jul 14, 2006 #4

    wolram

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    Gold Member

    Was there a vacuum tube version of a zener diode?
     
  6. Jul 14, 2006 #5

    berkeman

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    Interesting question. So I googled +"vacuum tube" +"zener diode" and got some hits. Go to this one for example:

    http://members.aol.com/sbench101/

    and do a text search on Zener. That will get you down the page to one way to do it with tubes.
     
  7. Jul 14, 2006 #6

    wolram

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    Gold Member

    Great site, Thanks berkeman.
     
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