Patent ID: 7212420

Claim:
A portable universal serial bus voltage transformer, comprising: a main body; a transformer circuit unit disposed in said main body for converting power from an AC source to a DC charging voltage required for USB devices, said transformer circuit unit including a circuit board disposed within said main body, a transformer mounted to said circuit board, and a plug electrically coupled to an input of said transformer and extending from said circuit board to pass through corresponding openings in said main body for selective coupling directly to an outlet receptacle defining the AC source; and, a plurality of USB connectors electrically connected to an output of said transformer circuit unit for exclusive passage of said DC charging voltage provided by said transformer circuit unit therethrough, said plurality of USB connectors being operable to simultaneously connect a plurality of devices to said DC charging voltage output from said transformer circuit unit, said plurality of connectors including at least one A-type USB connector, at least one B-type USB connector, and at least one Mini-type USB connector; whereby DC charging power to said devices is passed through said USB connectors exclusive of concurrent data passage therethrough.