Abstract: A power supply device with solar cells, working with artificial light sources, for electronic equipment, includes a structure (1) internally covered with one or more solar cells (2), and a light source (3) such as LED arrays or lamps, which are provided power by the main line voltage directly, or through a stabilization circuit.

Abstract: A device for the separate power supply of electronic circuits of the stages of the same apparatus comprising: a plurality of photovoltaic cells, mounted to a support structure, said photovoltaic cells being electrically connected in groups so as to supply, an output voltage and an electric current of the desired intensity; a plurality of power modules associated with the output of said groups of photovoltaic cells and adapted to power various sections of electronic circuits by means of voltages and currents of suitable value; at least one artificial light source associated with said support structures so as to illuminate said photovoltaic cells.

Abstract: Electric wires are described consisting of a metallic wire able to conduct the electric current, the outer surface of which is coated in an alloy consisting of specific metals in set quantities.

Abstract: Electric wires are described consisting of a metallic wire able to conduct the electric current, the outer surface of which is coated in an alloy consisting of specific metals in set quantities.

Abstract: The feeding device with solar cells, working with artificial light sources, for electronic equipments consists of a structure (1) covered with one or more solar cells (2), comprising a light source (3) with led diodes lamps fed by the electric current, with the possible relative stabilization system and sending for use, and/or—if ever possible—susceptible of working with the natural sunlight.

Abstract: A connection cable for an audio signal in recording or reproduction devices. The cable may be calibrated and includes a plurality of gold, copper, and silver conductor wires. The wires are connected in parallel with the going different from the return. A silk or cotton dielectric is used to insulated the wires and to insulate braidings surrounding the wires. Pure copper connectors are connected to the wires.

Abstract: A connection cable for an audio signal in recording or reproduction devices. The cable may be calibrated and includes a plurality of gold, copper, and silver conductor wires. The wires are connected in parallel with the going different from the return. A silk or cotton dielectric is used to insulated the wires and to insulate braidings surrounding the wires. Pure copper connectors are connected to the wires.

Abstract: A connection cable for an audio signal in recording or reproduction devices. The cable may be calibrated and includes a plurality of gold, copper, and silver conductor wires. The wires are connected in parallel with the going different from the return. A silk or cotton dielectric is used to insulated the wires and to insulate braidings surrounding the wires. Pure copper connectors are connected to the wires.

Abstract: A device for electroacoustic diffusion includes a basket; a balance supported by the basket, made of balsa wood or formed with a balsa wood stripe fixed at its ends with a coil glued at its middle; a balsa wood membrane supported by the basket; a suspension adjacent to the membrane and supported by the basket; and an electroacoustic structure adjacent the basket and opposite the balance. The electroacoustic structure includes a first plate adjacent the basket, a second plate, a magnet between the first plate and the second plate, and a coil between the first plate and the second plate. The membrane can take on various shapes, including: (a) a truncated-cone shape, including triangular pieces of balsa wood, steam folded, glued, and placed with fibers of the balsa wood in a radial orientation, (b) a dome-shape, and (c) a planar shape.