Abstract: An a.c. current distribution system fed by a current source for providing electrical power to a load, the current distribution system comprising a first and second conductive means connectable to the current source and coupling means to couple substantially one half of the load in series at a first position along the first conductive means and to couple substantially the other half of the load in series at a second position along the second conductive means, the first and second positions being substantially the same distance along the first and second conductive means from the current source.

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).

Abstract: An electrical arrangement is disclosed for use in supplying electrical power to the units in a motor vehicle. The arrangement comprises a battery, and an inverter to receive power from the battery and to generate a high frequency signal at an intermediate voltage higher than the voltage of the battery. There is a distribution network to distribute the high frequency signal to the units in the vehicle. At least some of the units supplied with electrical power are provided with step-up transformers to step-up the intermediate voltage to a higher voltage, that higher voltage being used by the units.

Abstract: An electrical arrangement is disclosed for use in supplying electrical power to the units in a motor vehicle. The arrangement comprises a battery, and an inverter to receive power from the battery and to generate a high frequency signal at an intermediate voltage higher than the voltage of the battery. There is a distribution network to distribute the high frequency signal to the units in the vehicle. At least some of the units supplied with electrical power are provided with step-up transformers to step-up the intermediate voltage to a higher voltage, that higher voltage being used by the units.