CONTROL SYSTEM FOR CONTROLLING OPERATION OF ELECTRICALLY CONTROLLED DEVICES

摘要

A glass-ceramic plate (4) in a special frame carries a number of electrical loads such as hotplates and a row of manual controls (1), each comprising a conventional plastic toggle with a finger grip on a small circular disc. In the centre of the toggle an e.g. annular plate (2) of ferromagnetic material incorporates a central window (21) for a signal wire or glass fibre cable (8) embedded in the plastic. The plate has a thin covering of plastic on the underside across the opening (21), through which light from a lamp (6) passes via the hole (71) in an annular magnet (7).