Trick of White LED. Circuit Clinic 6


Introduction of White LED created a revolution in electronics field to replace the Fluorescent lamps in lighting systems. High power White LEDs are now widely used to make Ceiling lamps, Flood lights, Vehicle lamps, surgical instruments, Projectors etc. When compared to ordinary White LED, the high power LED consumes around 200-300 milli ampere and mounted on heat sink for heat dissipation. Majority of high power White LEDs are flat chips that will be easily destroyed if the voltage and current exceeds. So LED driver circuit is used for the  stable operation of the LED. The theory and working of LED is given in the previous post, so only the relevant facts about White LED is given here.
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