TV by the photosensitive resistor circuit diagram automatic brightness adjustment


Posted on Mar 28, 2007

By the photosensitive resistor television automatic brightness adjustment circuit shown in Figure photoresistor and contrast potentiometer connected to the intermediate head. U


TV by the photosensitive resistor circuit diagram automatic brightness adjustment
Click here to download the full size of the above Circuit.

se photoresistor vary light intensity and the change in resistance characteristics, the potential of the intermediate potential head with different light intensity changes, through decoding circuit TA7698AP control, so the TV brightness, contrast, saturation change accordingly. Light brightness, small GR resistance, potentiometer middle of the first potential rise.




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