An automatic night lamp is such a lamp that gets ON during the night and gets OFF during the daytime. This Night lamp contains a special type of circuit that is operated by an LDR and Relay. When sunlight falls on LDR, the circuit breaks but when darkness occurs it completed the circuit and turns on the light.
We will normally use this circuit for Street Light
Components Required-
2n2222a
LDR
330nf, 400v cap
50k pot
4x 1n4007 Diode
1m ohm Resistance
300uf, 50v Capacitor
100uf Capacitor
12V Zener
12VDC Relay
