Electric generator, electric power supply, sensor device with such an electric power supply

The generator (50) has a conductive loop (10), and a current-voltage converter (20) generating electric voltage and delivering electric energy from current induced in the loop. A rectifier (30) provides non-alternating voltage from the voltage generated by the converter at an output. The converter includes an inductor (L) comprising coils wound around the loop. The inductor has an input terminal (LA) connected to a ground of the generator, where the voltage generated by the converter is delivered by an output terminal (LB) of the inductor. Independent claims are also included for the following: (1) an electrical power supply (2) a sensor.