Patent ID: 8390217

Claim:
An extractor hood, in particular for domestic environments, comprising: a frame ( 10 ); a motor unit ( 19 ) associated with said frame ( 10 ) and designed to carry out air suction; a control unit ( 30 ) for adjusting at least operation of said motor unit ( 19 ); a feeding circuit ( 50 ) adapted to be connected to an external supply mains ( 60 ) for receiving electric power from said mains, and supplying electric power at least to said motor unit ( 19 ); said feeding circuit ( 50 ) being suitable to output a predetermined power supply irrespective of the power supply provided by said supply mains ( 60 ) to said feeding circuit ( 50 ), said feeding circuit ( 50 ) comprising an oscillator circuit ( 54 ) having a direct voltage at its input and outputs an alternating voltage, said alternating voltage being applied to the ends of the primary winding of a transformer ( 55 ) which outputs an output voltage of SELV type, said output voltage of SELV type being stabilised by feeding back an error E of said output voltage of SELV type relative to a reference value REF wherein the feeding circuit ( 50 ) comprises a reading module ( 58 ) for reading the output voltage of SELV type, and a comparison module ( 59 ), the latter carries out a comparison between the voltage detected by the reading module ( 58 ) and said predetermined value REF.