A versatile capacitor web coater with multiple source capability

Ongoing reductions in dielectric thickness for metallized AC capacitors, has resulted in a shift away from pure aluminium coatings for capacitor materials to be used in higher voltage applications. Metallized electrodes such as zinc with silver prenucleation, zinc/aluminium composites and aluminium bilayers are now required for AC capacitors. This paper will discuss the design aspects of a vacuum web coater to provide this wider range of requirements.