Abstract: A power distribution system to distribute electric power having a source of alternating current of a frequency of 10 kHz or greater, a distribution line connected to the source, and at least one load. The distribution line has two substantially flat conductors separated by an insulating sheet, and an element formed of a material of high relative permeability associated with at least one of the conductors. With use of the system an electronic ballast can be used with dichroic and discharge lamps, with high efficiency and absence of light flicker. Substantial reduction in H field interference due to the high frequency alternating current is achieved with use of the distribution line.

Abstract: A distribution line for distributing high frequency alternating electric current having a first substantially flat conductor (1) and also a second substantially flat conductor (2), the two conductors being located in spaced parallelism and being separated by an insulator (3), at least one of the conductors (2) being associated with a further element (4) of a material of high relative permeability. A second element (5) of high permeability may be associated with the other conductor (1).