Abstract: Herein is disclosed a planar electrode which includes two equally sized electrode surfaces. The equally sized electrode surfaces are electrically separated along a linear insulation zone and adjoin directly along an inner edge portion. The two equally sized electrode surfaces include, respectively, a band-shaped extension section, which encloses the other electrode surface along its outer edge portion and thereby is separated by the extended insulation zone from the respectively enclosed electrode surface.
Abstract: A planar electrode includes two equally sized electrode surfaces, electrically separated along a linear insulation zone, which adjoins directly along an inner edge portion. The two equally sized electrode surfaces include, respectively, a band-shaped extension section, which encloses said other electrode surface along its outer edge portion and thereby is separated by said extended insulation zone from said respectively enclosed electrode surface.