Circuit for providing neutral conductor in three-phase electrical appliance, e.g. cooker, has three inductances connected to phase lines in star shape, providing neutral line at node point

摘要

The circuit has a mains input (11) for the three-phase lines (L1,L2,L3), and an output (12) for providing the three phase lines and a neutral line (26) to an appliance. Three equal inductances (28) are arranged between the input and the output, connected the three phase lines in a star shape, and the neutral line is extracted from the node point of the three inductances.