Guard Ring

Discussion in 'General Electronics Chat' started by shreyas_bhat, May 2, 2005.

  1. shreyas_bhat

    Thread Starter Active Member

    Jul 26, 2004
    I have a parallel plate capacitor arrangement, and need to reduce the fringe field effect at the corners. For this purpose, I have incorporated guard ring around one of the plates. So, what I have now is two plates, and around the top plate, I have a metallic ring. If the bottom plate is at a potential V1, and the top plate is at a potential V2, at what potential should the guard ring be maintained to minimize fringe field effects and why ?
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    I stumbled onto this Interesting article describing the design of a parallel plate capacitor. Included in the article is a section on guard-rings.