LDR Controlled Light Switch

      This is a light switch or light activated relay circuit.The relay on when LDR uncoverd and relay off when LDR covered.Adjust VR1 for light sensitive.LED will turn on at the same time with relay.

Above Figure, Show the Circuit Diagram of Light Switch. This is Project about, When Light will Fall on LDR, It will Behave Like a Switch , Mean Fall on Light on LDR will cause switch OFF and Vice versa.



Data sheet PN2222 which is equivalent of 2N2222
But only pin differrent .

PN2222{Download}