ELECTRICAL CIRCUIT ASSEMBLIES

An electrical circuit assembly comprises a stack of a plurality of substantially identically constructed modules, each module includes a planar, electrically insulating substrate having constituent elements of a circuit on only one major surface of the substrate, and has an electrically conductive coating on the other major substrate surface. The assembly has at least one conductor member, at least partially, holding the modules in their required locations in the stack, each conductor member and the conductive coatings being interconnected, and together forming an extensive body, to be maintained at zero potential, to reduce electrical interaction between the circuit elements. Each conductor member may be planar in shape, or may comprise a corner piece for the stack. A plurality of stacks on a common support may have a common module, and/or share a common conductor member, and the support may provide a conductor member.