DIY Automatic Night Light with BD139 Transistor | Automatic Led On/Off Circuit Making #shorts #ldr

Подробнее о видео

I made a small circuit to show how the lights would turn off during the day and turn on individually at night.To make this circuit, I used a transistor whose number is BD 139 and two resistors, one resistor's number is 10K and the other is 1K.I made a circuit with these, along with a small LED to show that our light is turning on and off, and I used a 3.7 volt battery for this whole technology.
#project #diy #technology #technical #schoolproject #led #light