Abstract: An electrical circuit is disclosed having a drive stage and a control stage suitable, for example, for operating an electric motor in an electrical power assisted steering system.

Abstract: In an electric power assisted steering system a power stage (2) is provided comprising at least a first conducting means (4), and a control stage (1) is provided comprising a second separate conducting means (5) adapted to carry one or more electrical components of a control circuit. Each conducting means comprising one or more conductive tracks or links (10) for carrying current to and/or from components of the electric power assisted steering system.

Abstract: A housing assembly for an electrical device (such as an electronic circuit) is disclosed in which a support member is provided in a compartment to physically divide a componentry sensitive to such radiation. In a preferred embodiment, an electric power-assisted steering system is disclosed of the kind in which an electric motor (12) is connected through a gearbox to an output shaft operatively connected to a steering column of the vehicle and in which a one-piece housing (1) is provided which defines two discrete compartments (2, 3). A first compartment (3) is adapted to house the motor and the gearbox, and a second compartment (2) is adapted to house a motor control circuit and a motor drive circuit, a support member (21) being adapted to provide a physical banner between the two circuits. The one-piece housing (1) is advantageous in that it reduces the number of potential openings through which electromagnetic radiation may pass compared with providing multiple housings.