Patent ID: 8198825

Claim:
An illuminating module capable of compensating current, the illuminating module being capable of tuning the light with a light modulating circuit, the illuminating module comprising: an illuminating unit, having a load impedance, the illuminating unit comprising: a tube; a potential node; and a level unit, having a level potential which changes with the light modulating circuit; a compensating circuit, comprising: a first resistor, coupled to the potential node; a first switch, coupled to the first resistor; and a judging unit, coupled to the level unit and the first switch, the judging unit comprising: a second resistor, electrically connected to a reference power source; and a first MOSFET, electrically connected to the level unit and the second resistor; wherein when the level potential is less than a predetermined potential, the judging unit makes the first switch to be at the conducting state to parallel connect the first resistor and the load impedance.