Abstract: The present invention relates to an electric appliance (100) comprising an electric load (225), and a printed circuit board assembly (115) for electronically managing the electric appliance (100); the printed circuit board assembly comprises a slave printed circuit board (220s) operatively associated with the electric load (225) for driving it, and a master printed circuit board (220m) operatively associated with the slave printed circuit board (220s) and arranged for receiving an electric power supply (L, N) of the electric appliance and for selectively providing/stopping the provision of an operative electric power to the slave printed circuit board (220s) for energization/de-energization thereof.

Abstract: A household appliance has a heating circuit (140) for heating a fluid including a heating element (150) that can be selectively energized (155) to determine the heating of the fluid, and a monitoring unit (125) for monitoring the operation of the heating circuit. The monitoring unit (125) is configured to monitor at least one electrical potential internal to the heating circuit (140). The at least one electric potential internal to the heating circuit (140) is at least one among:—an internal electric potential detected at a first terminal (160b) of the heating element (150) connected to an on/off switch (155) of the heating circuit (140);—an internal electric potential detected at a second terminal (160a) of the heating element (150) connected to a main switch (135) of the appliance or to a safety switch provided for switching the heating circuit off in case of malfunction of the on/off switch (155).

Abstract: A washing and/or drying appliance includes a heating circuit (140) for heating a washing liquid and/or a drying air flow. The heating circuit is connected to voltage distribution lines (105a,105b) distributing power inside the appliance and includes at least one heating resistor (205) in series to switch means (210a,210b) controlled by an appliance control unit (125) for selectively energizing the heating resistor when required. The switch means of the heating circuit includes first and second switches (210a,210b) in series to the heating resistor, the heating resistor being interposed between the first and second switch. A monitoring circuit arrangement is associated with the heating circuit. The monitoring circuit arrangement includes a resistive network including a first resistor (R1) connected to the heating circuit so as to be bypassed when the first switch is closed, the heating resistor, and a second resistor (R2) connected to the heating circuit so as to be bypassed when the second switch is closed.

Abstract: A washing and/or drying appliance includes a heating circuit (140) for heating a washing liquid and/or a drying air flow, connected to voltage distribution lines (105a,105b) distributing power inside the appliance. The heating circuit includes at least one heating resistor (205) in series to switch means (210a,210b) controlled by an appliance control unit (125) for selectively energizing the heating resistor when required. The switch means of the heating circuit includes a first and a second switch (210a,210b) in series to the heating resistor, the heating resistor being interposed between the first and second switches. A monitoring circuit arrangement is provided, which includes a first resistor (R1) in shunt to the heating resistor and having a resistance substantially higher than that of the heating resistor, and a pull-up network connected between a first terminal (215b;215a) of the heating resistor and one of the voltage distribution lines.