Development of Current Control System Appropriate to a Big-Capacity LED Lamp using Microprocessor

The purpose of this study is to develop a current variation control system appropriate to the various LED(Light Emitting Diode) lamps using current control system equipped with micro-controller based voltage regulator of power driving circuit. For this, we will suggest a stable control system of current variation to enable a stable power-supply and current-control, consisting of circuit to minimize the affects on the LED forward voltage using variable resistance and compensating resistance. The method of constant current circuit and energy savings using micro-controller based voltage regulator suggested in this study can be applied to various a big capacity LED lamp to minimize the unnecessary heat generation and to control resistance delicately. Ultimately, we expect the results of this study will upgrade the reliability of LED lamp by supplying the current stably.