Скачать или смотреть 🌞🌛 Automatic Night Light # DIY LDR LED Circuit 💡

🌞🌛 Automatic Night Light # DIY LDR LED Circuit 💡 #shorts #led #automation #ldr #nightlight

This is a simple automatic LED night light circuit using an LDR (Light Dependent Resistor) and a BC547 transistor. The LDR senses the light level — when it gets dark, the resistance of the LDR increases, turning the transistor ON and lighting up the LED. This makes the LED glow automatically at night and turn OFF during the day to save power.

Parts Used:
✅ LDR (Light Dependent Resistor)
✅ BC547 NPN Transistor
✅ 3.3kΩ Resistor (base current limiting)
✅ High Power LED
✅ 9V Battery

Working Principle:

In daylight, the LDR has low resistance → transistor stays OFF → LED stays OFF.

At night, LDR resistance increases → base of BC547 gets bias current → transistor switches ON → LED turns ON.

This is a perfect beginner electronics project to learn how LDRs and transistors work as automatic switches!



🏷️ Hashtags:
#LDR​ #AutomaticLED​ #NightLight​ #DIYProject​ #Electronics​ #SimpleCircuit​ #LEDProject​ #TransistorSwitch​ #BC547​ #Arduino​ #ElectronicsProject​ #SchoolProject​ #BasicElectronics​ #TechDIY​ #MW_Electronics_Lab​