Zener Diode Wiring Clarification

Discussion in 'The Projects Forum' started by fadeliss, Apr 13, 2016.

  1. fadeliss

    Thread Starter New Member

    Apr 13, 2016
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    0
    Hello I am trying figure out the differences between these wiring situations,
    I've normally wired things the top pictured way, but as I learn more I'm watching people show wiring done on the bottom part of the image.
    What's the differences ?
    My confusion lies in with series vs parallel with a Zener diode.
    Attached is the 2 wiring diagrams aforementioned.
     
  2. #12

    Expert

    Nov 30, 2010
    16,250
    6,746
    The first drawing subtracts the zener voltage from the supply voltage.
    The second drawing sets the voltage to the load as equal to the zener voltage.
     
    fadeliss likes this.
  3. fadeliss

    Thread Starter New Member

    Apr 13, 2016
    2
    0
    Thank you, that makes sense!
     
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