The present invention relates to an electrical energy regulation device for a power bus (BUS), comprising: an electrical energy storage unit (BAT), a solar generator comprising a plurality of cells (GC1, ..., GCn), regulation means (D1, Q1, AMP1) of the bu...

A solar-powered device (1) is adapted to be disposed on a battery unit of a mobile telephone handset so as to charge the battery unit (3). The solar-powered device includes a light sensor, a photoelectric converting circuit coupled operably to the light se...

The present invention relates to a sort of portable emergency power supply to use when storage batteries of such mobile appliances as cellular phones, radios, camcorders, laptops and mini cassette players are discharged or become unusable. In particular, u...