Abstract: A circuit for complementing the AC mains supply voltage, particularly for resistive loads, comprising a rectifier inserted between an AC power source and a resistive load and adapted to prevent the reverse flow of a processed portion of the AC supply voltage towards the AC power source, and one or more capacitors arranged ahead of the resistive load; the circuit has the particularity that the values of the one or more capacitors are chosen, according to table 2, low enough to maintain the AC nature of the AC voltage and to complement, during discharge towards the resistive load, the AC supply voltage until a desired value thereof is reached.

Abstract: A power supply for light sources, particularly for fluorescent lamps and the like, comprising capacitive means (1) that are connected to the mains (9) and are adapted to supply rectifier means (2) for rectifying the mains current from AC to DC; and filter means (6) that are connected in output to the rectifier means (2) and are adapted to filter the rectified current for supplying power to a fluorescent lamp (8).