Patent ID: 8125199

Claim:
A load control module, suitable for an electrical equipment, wherein the electrical equipment is coupled to a terminal of a switch, and the other terminal of the switch receives a supply voltage, the load control module comprising: an energy storage unit, coupled to the terminal of the switch, wherein the energy storage unit converts the supply voltage when the switch is turned on so as to output a reserved voltage and an indication signal having a first level, and the energy storage unit constantly outputs the reserved voltage for a predetermined time and switches the indication signal to a second level when the switch is turned off; a microprocessor, coupled to the energy storage unit, wherein the microprocessor is activated according to the reserved voltage and constantly increases the duty cycle of a modulation signal within a fine tuning time until the duty cycle of the modulation signal reaches an optimal duty cycle or the indication signal is switched to the second level, and the microprocessor also switches the duty cycle of the modulation signal to one of a plurality of predetermined duty cycles according to the indication signal having the second level without the fine tuning time; and a pulse control unit, coupled to the microprocessor and the electrical equipment, wherein the pulse control unit regulates the level of a control voltage according to the duty cycle of the modulation signal and outputs the control voltage for regulating the characteristic parameters of the electrical equipment.