How to make a Salt Water Battery Lamp.

Salt water battery + Joule thief circuit. Materials : Copper plate, Aluminum Foil, Kitchen Towel, Warm Salt water, Joule thief circuit Bigger copper plate Aluminum Foil is more powerful. This battery lamp turned on one hour.. but if you replace salt water, it will be lasting until the foil almost erode.

• #فناوری_و_رایانه
• #voltaic_cell
• #salt
• #salt_water