135,640 views 131 on YTPak
333 61

Published on 17 Nov 2010 | over 6 years ago

Dark Detector LED Using LDR.
A small ciruit using LDR (Light dependent Resistor), where the LED light automatically turns on when the surronding are dark and automatically turns of when surrounding is bright.

Components used: BC547 transistor, LDR,100K ohms resistor,9v Batery

For Circuit diagram visit goo.gl/OB4UyA

Loading related videos...