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What is Light Detector Circuit with NAND Gate about?

This document describes a light detector circuit that uses a 7400 NAND gate integrated circuit and a light dependent resistor. The circuit uses a voltage divider with the light dependent resistor and a fixed resistor to produce different logic levels at the inputs of the NAND gate based on light levels. When dark, the light dependent resistor has high resistance and the NAND gate output is low, but when light, its resistance drops and the NAND gate output goes high, powering an LED. The circuit can be used

Author

Suraj Mogali

Language

EN