Supreme Led Tv Backlight Driver Circuit Diagram

In this post we study a led driver circuit specially designed for backlighting lcd screens applications introductionlet learn more about this interesting device.

Led tv backlight driver circuit diagram. As shown in figure 3 the backlight driving circuit consists of three power converters. Leds use dc voltage to work unlike normal leds the high power leds that used in tv works at 3vdc per led. Led current voltage characteristic variations cause brightness.

Today lcd products have become very common and a part of our everyday life. Leds have been replacing cold cathode fluorescent lamps ccfls. Schematic diagram of tester for led tv backlight with complete details of the parts needed.

This display backlight driver has been designed specifically for mobile phones digital cameras pnd and pmps. Led tv board schematic diagram. I have an old defective lcd 13 tv around for ten years.

Solutions for backlight driver power supply architecture for led backlighting tv today power supply unit lips architecture for lcd tv dc dc boost ac dc 24v pfc ac input main pwm dc ac inverter cb1 cb2 cbn 24v for ccfl bl inverter stby pwm 5vsb for mcu controller ic led current regulator l1 l2 ln ac dc pfc ac input main pwm st by 12v audio. So if you want to dim it you need a solution so that during day time or when ambient light is enough to make. Whether it s your cell phone dvd player tv set car all incorporate lcd screens for indicating or displaying purposes.

I already discarded the casing what is left is the metal part that support the logic board power supply inverter and lcd. Discliamer im not the original owner of the design credit to th. A typical 16 2 lcd fig.

This is replacing the led backlight for an lcd monitor or television with led strip. Backlight driver board single coil. Led tv is the same as lcd tv the only difference is that lcd tv uses ccfl as backlight and inverter as driver board but led tv uses leds as backlight and boost driver board as driver.