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  • LED Bulb from Household Wastes.

    There is a formula to calculate the voltage and current.Reactance Xc=1/2*pi*f*CFor example, Xc=1/(2*3.14*50*0.47 EXP-6)Xc=6775Current I=V/Xc I=30maTo find Voltage:Vp=√2 * VrmsVp=1.414 * 240 = 339So, current is important here and we can add No. of leds in series based on their Forward Voltage. Also adding resistor to led will increase the life of the bulb.

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