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Dark Detector using transistor

Ashwin Parodiya Dangi




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Product Discription


A light detector senses light. As the level inceases adn LDR meets the lowest threshold resistance, the circuit automatically turns on the LED D1. we can adjust the senstivity using the resisance.


LOW resistance > less darkness to switch off the LED

HIGH resistance > more darkness to switch off the LED

A dark detector can be made using variable resistor, the sensitivity of the circuit can be adjusted using with a varicable resistor.

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Other Detail

Software Requirement :   No Requirement

Hardware Requirement :   BC 547 Transistor, Variable resistor, Led, battery, brad board, connecting wires

Application :   This project can be use for mini project for school and engineering students.