Abstract: A surge protector or transient suppressors for AC power lines having its components mounted on a circuit board. The metalization of the board are configured to present as large a surface area as possible, given the topology of the board, to the flow of current. A return conductor is placed on the opposite side of the board with a large surface area corresponding to the first conductor. The magnetic field between the two conductors is substantially cancelled. This configuration reduces the magnetic field intensities associated with the flow of current, thereby reducing self-inductance.

Abstract: Described is a multi-element, high voltage radio frequency bushing for trmitting RF energy to an antenna located in a vacuum container. The bushing includes a center conductor of complex geometrical shape, an outer coaxial shield conductor, and a thin-walled hollow truncated cone insulator disposed between central and outer conductors. The shape of the center conductor, which includes a reverse curvature portion formed of a radially inwardly directed shoulder and a convex portion, controls the uniformity of the axial surface gradient on the insulator cone. The outer shield has a first substantially cylindrical portion and a second radially inwardly extending truncated cone portion.