Automatic Control for LCD Panel Backlight

This is an Automatic LCD Panel Backlight Control circuit. This is a simple low cost implementation of an LED controller. It can compensate for aging effects and the temperature typically found in high power LEDs. This circuit consist of a photocell sensor and The AD5228 so the automatic brightness control can be achieved. The photocell’s resistance changes linearly and inversely […]

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L200 Light Controller

This is a circuit of L200 light controller. The output of this circuit is controlled by the surrounding environment’s brightness.  If the brightness increases, the output voltage will increases as well. Here is the circuit : The R1 and photoresistor are connected in parallel. They are used as regulator.  If we connect the the photoresistor in parallel with R2, we […]

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