Super capacitor based energy saving LED lighting system

Abstract: Today's world fully depends on energy. There is a huge gap between demand and supply of electricity. So, it is time to use energy saving devices and methods. In this paper, a low-cost super capacitor base LED lighting system is introduced. The proposed system is allowed to use rectified DC voltage from AC mains or power from solar. The rectified DC voltage is used to charge a supercapacitor for few minutes.  When fully charged the super capacitor will be automatically disconnected from the supply. The power for LED lighting is taken from the supercapacitor. Before the super capacitor is fully discharged, it recharges automatically. Thus reducing the time of connection between main supply and load and hence the cost of energy and power consumption is reduced to a great extent. Keywords: Supercapacitor, PV panel, LED bulb, OP-amp. (Article history: Received 14 April 2016 and accepted 30 December 2016)