Diode Forward Bias characteristics

Discussion in 'Homework Help' started by logearav, Oct 2, 2011.

  1. logearav

    Thread Starter Member

    Aug 19, 2011
    248
    0
    Revered members,
    Kindly see my attachment.
    From the options given, i think the answer is ON switch, because when the input is low, that is when the applied voltage is below the breakdown voltage(0.7 V for Silicon) the current is low and when the applied voltage is equal or above the breakdown voltage, there is saturation.
    Am I correct?
     
  2. bertus

    Administrator

    Apr 5, 2008
    18,492
    3,561
    Hello,

    Yes, you are right:

    From the eBook Page: http://www.allaboutcircuits.com/vol_3/chpt_3/1.html

    • A diode is an electrical component acting as a one-way valve for current.
    When forward biased the "switch" is closed.
    When reverse biased the "switch" is opened.

    Bertus
     
    logearav likes this.
  3. Adjuster

    Late Member

    Dec 26, 2010
    2,147
    302
    Note however that the term "breakdown voltage" is also commonly used to denote the reverse breakdown voltage at which a diode begins to conduct, i.e. the limit of its reverse blocking capacity. http://en.wikipedia.org/wiki/Breakdown_voltage

    I believe that technical English (at least in UK), normally refers to the "forward voltage" or "cut-in voltage" for conduction in the preferred direction.
     
    logearav likes this.
  4. logearav

    Thread Starter Member

    Aug 19, 2011
    248
    0
    Adjuster,
    I stand corrected. It is forward voltage ( 0.7V for Si and 0.3V for Germanium). Thanks for clarifying.
     
Loading...