Guard Ring

Thread Starter


Joined 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 ?