Capacitance formulas needed!

Discussion in 'General Electronics Chat' started by rachelgl, Jul 10, 2012.

  1. rachelgl

    Thread Starter New Member

    Apr 5, 2011
    5
    0
    Hi,

    Hopefully this is going to be pretty basic stuff for someone. I have a mechanically variable capacitor and to prevent electrode shorting, I have deposited a small amount of oxide on the side walls. For my Matlab model I need the equation for capacitance which takes this oxide into account. I can't seem to find a generic formula for capacitance of a parallel plate or comb capacitor with oxide on the side walls (not filling entire gap between electrodes). I need formulas for both geometries.

    Thanks in advance!

    Rachel
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,137
    1,786
    Do you know what the dielectric constant of the oxide is and how thick that layer is?
    I doubt that it will have much of an effect.
     
Loading...