Abstract: The invention relates to apparatus (40) comprising: an inductor; a rectifier coupled to the inductor; a voltage converter coupled to the rectifier; a battery coupled to the voltage converter; a load coupled to the voltage converter; and a control unit coupled to the voltage converter and arranged to cause either the battery to be charged by the rectifier, or the load to be powered by the rectifier, or the load to be powered by the battery, as a function of the state of a switch for controlling powering of the load and as a function of the output voltage of the rectifier.
Abstract: The invention relates to apparatus (40) comprising: an inductor; a rectifier coupled to the inductor; a voltage converter coupled to the rectifier; a battery coupled to the voltage converter; a load coupled to the voltage converter; and a control unit coupled to the voltage converter and arranged to cause either the battery to be charged by the rectifier, or the load to be powered by the rectifier, or the load to be powered by the battery, as a function of the state of a switch for controlling powering of the load and as a function of the output voltage of the rectifier.
Abstract: Disclosed is a lightguide in the form of a plate (1), a first surface of which is provided with first straight parallel grooves (8) (diffusing the light circulating in the guide). The inventive lightguide is characterized by the fact that it is provided with second straight parallel grooves (9) (diffusing the light circulating in the guide) which extend in an oblique direction, particularly in an orthogonal direction, relative to the first grooves such that the guide diffuses in a uniform manner the light that is introduced into the guide via three or four edges thereof.
Abstract: Disclosed is a lightguide in the form of a plate (1), a first surface of which is provided with first straight parallel grooves (8) (diffusing the light circulating in the guide). The inventive lightguide is characterized by the fact that it is provided with second straight parallel grooves (9) (diffusing the light circulating in the guide) which extend in an oblique direction, particularly in an orthogonal direction, relative to the first grooves such that the guide diffuses in a uniform manner the light that is introduced into the guide via three or four edges thereof.