Selectively power feeding device for electrical loads and the ignition circuit of internal combustion engines, in motor-vehicles

A feeding device for feeding the alternating-current and direct-current electrical loads and for feeding the capacitive-discharge ignition circuit of a motor-vehicle combustion engine, comprising an electric generator one winding of which can be connected to the feeding circuit of electrical loads of the vehicle and to said ignition circuit, respectively, said winding of the generator being selectively connectable, via differently polarized diodes and electronic swith devices to the engine ignition circuit and to the electrical loads circuits of the vehicle, respectively, under the control of a voltage regulator, said voltage regulator comprising said electronic switch devices serially connected to the said electrical-load circuits and parallelly connected to the generator respectively, and a control circuit to selectively feed power from the generator to said electrical-load circuits with positive voltage out-goings for a part of each period of the alternating voltage of the generator, and to feed with the engine ignition circuit with negative voltage out-going for the remainder of the aforementioned period, respectively.