US Patent 7557298 Laminated bus bar assembly

A laminated bus bar assembly comprises alternating layers of a conductive layer and a foam dielectric layer. The foam dielectric layer has a dielectric constant greater than a solid non-porous dielectric constant of the same material, the use of which increases the partial discharge inception and extinction voltage levels, provides vibration resistance, decreases inductance and the like. The bus bar assembly of laminar construction is useful for power distribution systems, high power transistor modules, and the like.