Abstract

An electric circuit was made and connected to an alternative current that was passing through lower transformer. This process would produce a current the value of which was 500 mA and a voltage of 6 volt was used to charge battery. When the voltage source (alternative current) was cut, the circuit started lighting. We measured the charge and discharge in addition to time lapses to compare them with the results of the experiment. The results were presented and discussed to compare them with the spent energy in tingistin lamp or gas lamp.

Key words: Electric circuit, light emtting diode (LED) as emergency, instead of gas lamp or tingistin lamp, low energy consumption.