DISTINGUISHING CIRCUIT OF BALLAST CLASS FOR LED DRIVING

摘要

A stabilizer type determination circuit comprises: a voltage detecting unit for detecting an output voltage level of a rectified stabilizer; a comparing unit for comparing the voltage level detected by the voltage detecting unit with at least one preset voltage value; and a determining unit for determining a type of the stabilizer by using a result compared by the comparing unit. According to the stabilizer type determination circuit to drive an LED, an LED can be stably driven regardless of a type of a stabilizer by controlling an LED driving circuit by determining the type of the stabilizer.