Light sensor circuit according to me is a series of sensors are the easiest and most often used as an experiment. Because with a little can make a component of this series, and its components easily available in the market. As with other series switching transistor circuit above also apply the basic principles of the saturated and cutoff transistors. To obtain a more accurate circuit and perfect could be using IC op-Amp.

In the above picture there are two conditions that the application of the light sensor when the bright lights and the lights on when dark. It should be understood from the above series is how we position the amount of current that will be received by the base of the transistor by utilizing the VR (variable resistor) as a determinant.
Rangkaian Sensor Cahaya Dengan LDR
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