Light Dependent Resistor

Light Dependent Resistor: Working Principle and its Applications

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What is an LDR? An LDR is a photoelectric device. LDR stands for Light Dependent Resistor also known popularly as photo-resistor. Working Principle of LDR The semiconductor...
LED Wickets

How do LED Wickets in Cricket works?

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If you are watching cricket then you might have noticed flashing LED Wickets system. The bails and stumps LED lights flash when the ball...