Electronic control device and method for reducing stand-by state energy consumption of an electric household appliance

Abstract

A household appliance () is provided with an electronic command device () for reducing standby-state energy consumption of the electric household appliance (). The electronic command device () includes an electronic control unit () and a switching mode low power supply unit () designed to supply a predetermined supply voltage (VB) to the electronic control unit (). The switching mode low power supply unit () has at least a first control terminal () and at least an output terminal () supplying the main prefixed supply voltage (VB) to the electronic control unit (). The switching mode low power supply unit () is further configured to switch from a operating state to a standby state, when the first control terminal () receives a command signal (Soff). The electronic control unit () has a sensing terminal () and is configured to generate the command signal (Soff) when it detects a predetermined voltage variation on the sensing terminal (). The electronic command device () is configured to connect the sensing terminal () to the output terminal (), at least temporarily, to cause the electronic control unit () to generate the command signal (Soff) so that the switching mode low power supply unit () switches from the operating state to the standby state.