Lighting Driver Circuit for Stable Dimming

The patent introduces a driver circuit as an intermediary between the dimmer and the light source. This driver circuit includes a rectifier module that converts AC power to DC power, and a constant current module that provides stable current to the LED light source regardless of AC power fluctuations. The driver acts as a mediator that isolates the light source from the unstable AC power source while still allowing dimmer control to function, thus resolving the contradiction between control flexibility and light stability.

The patent segments the power conversion function into distinct modules: a rectifier module for AC to DC conversion, a constant voltage module for voltage stabilization, and a constant current module for current regulation. This segmentation allows each module to independently handle specific aspects of power conversion, improving overall light stability while keeping the design modular and manageable. The segmentation resolves the contradiction by providing stable light output through specialized modules without requiring an overly complex monolithic design.

The patent merges the constant voltage control and constant current control functions into a single integrated driver circuit. The constant voltage module and constant current module work together in a coordinated manner, where the constant voltage module provides stable voltage and the constant current module ensures stable current to the LED. This merging approach achieves consistent light output by combining both control mechanisms, while the integrated design prevents excessive complexity by having the modules work synergistically rather than as separate independent systems.