Difference between ESR and ESI in Electolytic caps

Discussion in 'General Electronics Chat' started by billcrup, Jan 25, 2005.

  1. billcrup

    Thread Starter New Member

    Jan 25, 2005
    1
    0
    I am trying to understand why the output capacitor in a switching regulator must be low ESR, and how that varies from ESI. Can anyone help?
     
  2. pebe

    AAC Fanatic!

    Oct 11, 2004
    628
    3
    ESR means Equivalant Series Resistance. It is the resistance of the electrolyte and increases the impedance of the capacitor - which is a bad thing.

    I have never heard of ESI in connection with electrolytics,
     
  3. nanobyte

    Senior Member

    May 26, 2004
    118
    1
    What is ESI? Is it Equivalent Series Current?
     
  4. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi

    if you want your electro cap to give a long service life use low esr type but it does not mean that you can't use electro caps with a considered high esr. :)
     
Loading...