This circuit switches on the lights at dusk and switches them off at dawn automatically. It can also be used on tall buildings and T.V. towers, etc. where a red light is used to warn the approaching aircraft. Light dependent resistor (LDR) is usedanbsp;...
|Title||:||Set-71+10 New Science Projects|
|Author||:||C. L. Garg|
|Publisher||:||V&S Publishers - 2011-04-01|