Abstract: A basic frame for a solar panel having a container for a liquid, which container is arranged to constitute a thermal solar panel that can be combined with a photovoltaic solar panel having a plurality of cells, wherein the frame is an extruded piece of predetermined length having at least one first channel arranged for inletting a liquid and one second channel arranged for outletting the liquid. The invention also relates to a hybrid solar panel including the basic frame and to a method of manufacturing the solar panel.

Abstract: Digital indicator comprising a display device (20), a control circuit (30) connected to the display device (20) for transmitting to the display device (20) signals that indicate values measured by a certain type of measuring device (15) connectable to said control circuit (30). The indicator (12) is characterised in that the display device (20) comprises a plurality of display entities (22, 25, 26, 28, 29) selectively actuatable by the control circuit (30) on the basis of the type of measuring device (15) connectable to the control circuit (30).

Abstract: Sensor of liquid levels in a tank having a probe (10) capable of measuring a liquid level in a tank and of generating first type of electric signals dependent on the liquid level on the tank, an electronic device (20) connected to the above mentioned probe (10) and capable of receiving the first type of electric signals and of generating a second type of electric signals that are managed by an indicating instrument (14), which serves for displaying an information corresponding to the liquid level in the tank. The sensor is characterised by a power extracting circuit (29) apt to extract power signals from the secondary type of electric signals and to provide power supply to the sensor (5).

Abstract: A signaling device for sighting systems, for example for rescue crafts in the nautical field and the like, comprising at least two lamps arranged so that their respective filaments are mutually perpendicular, so as to achieve a circular luminous emission that is uniform over 360°.

Abstract: A signaling device for sighting systems, for example for rescue crafts in the nautical field and the like, comprising at least two lamps arranged so that their respective filaments are mutually perpendicular, so as to achieve a circular luminous emission that is uniform over 360°.

Abstract: A portable device with sensors for signalling physiological data of a human or animal user is disclosed. The device comprises an annular supporting structure such as a bracelet or a collar, having sensing means for monitoring the state of various physiological data, and a common processing unit for comparing reference data memorized therein with the sensed physiological data. The processing unit warns about health hazards on the basis of the comparison and preferably provides a treatment.

Abstract: A solar panel for simultaneous generation of electric and thermal energy with efficiency improvements is disclosed. A combined panel provided with a photovoltaic panel thermally contacting a fluid-containing panel by means of a heat exchanger, has reflective means mounted thereon for directing solar radiation to the photosensitive surface of the photovoltaic panel. The increased light concentration together with the cooling action of the water circulating in the fluid-containing panel, permits to highly increase the electric energy generated by the photovoltaic panel and the thermal power carried outside the fluid-containing panel by means of the water.