Electrical appliance having zero stand-by power consumption

An electrical appliance comprising an electronic control unit (6) and a power circuit (7) supplying power to the electronic control unit (6), the power circuit (7) having a soft on/off switch (1) for turning on and off the electrical appliance, the soft on/off switch (1) being connected electrically in parallel with a relay (2) and a rectifier (3), the power circuit (7) further having an electrical node connecting the soft on/off switch (1) and the rectifier (3) to a button sensing circuit (4) and to an AC/DC converter (5) through separate circuit lines characterized in that conduction and non-conduction of the relay (2) is controlled by the electronic control unit (6) by applying control signals in response to open and closed states of the relay (2) at a time instance when the soft on/off switch (1) is closed.