Tuesday, April 9, 2013

Night Lamp

This simple night lamp required very low current as 350mA. So you can operate this lamp using one normal 1.5V battery. But we recommend using alkaline batteries as you can operate long time without any headache.

When you buy a IC for this circuit make sure it is Cmos type. To get best results do not use an ordinary LED cheap bulb, use a good one. You can build this lamp without the photo resister but it will be then affect to the duration of the battery you can use, there for use photo resister to double the running time as mention in the diagram.

When daylight comes the photo resister will automatically disconnect the circuit and with the darkness it will be switched on again.

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