LED DRIVE CIRCUIT FOR AC POWER

摘要

PURPOSE: A light emitting diode driving circuit for alternating current(AC) power is provided to maximize the life expectance of each light emitting diode module by driving the control of the light emitting diode modules according to the order of temperature. CONSTITUTION: A semiconductor power switching element is parallelly connected with a light emitting diode module(10) including serially or parallelly connected one or more light emitting diodes. A detection unit(11) detects a current through the light emitting diode module or a voltage applied to the light emitting diode module. A comparison verifying unit verifies the values of the voltage of the current driving the light emitting diode module based on a recognized value from the detection unit.