Abstract: A turbine, particularly suitable for wind generators for the production of electric power even with weak wind, is provided with four identical axial blades, opposite two by two, all of them always active, both those windward and those leeward, wherein the air collides on a vane, after having produced a thrusting torque, is conveyed to the opposite vane for generating a tail torque thanks to a series of conveying channels connecting a first vane to the opposite thereof, being also the second vane connected to the opposite thereof by another series of conveying channels, both such series of channels are orthogonal to each other and the fluid flows run through them undisturbed by any interference, with a great increase in efficiency of the turbine.

Abstract: A synchronous alternator is provided including a stator portion having one or more disc-shaped plates each carrying coils in multiples of three, and by a rotor portion, coaxial to the preceding, including one or more disc-shaped plates each carrying permanent magnets in a pair number different than the number of coils of each stator disc. Each of the magnets of each rotor disc being oriented with inverted poles with respect to the preceding one and a rotor disc is placed in between each stator disc so that the rotation thereof results in a variation of linked magnetic flux with the coils, determining, the generation of alternated electrical current with variable frequency, so that the braking effect on the first coil is completely or partially balanced by an accelerating effect determined on the second coil.