Dark Sensor Project on Breadboard 😮‍💨 - With Diagramm ✅

Описание: I created a ldr darkness circuit , which turns on the LED in absence of the surrounding LED


Components :

LDR
LDE
BC547 Transistor
220 Ohm Resistor
4,7K Ohm Resistor
3 Volt Power Supply

How it works: 🧐

The LDR and 4,7k ohm resistor build a voltage divider

When there is no light in surrounding, the LDR resitance increases , creating a high output voltage on the base-emitter of the transistor

This voltage is greater than 0,7 volt which makes the NPN Transistor to turn on. Current flows from the base and makes the LED turn on

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