Portable Solar Fan/Light

Abstract

With fuel hikes making news, solar energy is the most sought after energy source. Portable solar fan/led are simple, portable and ready to use devices which can be used by anyone especially in remote areas. Going solar can solve more than one problems, right from cutting down on carbon emissions and dependence on fuels, to solving the energy crisis. This project aims to make a simple solar charger which can be used on the go. Solar panels don’t supply regulated voltage while batteries need so for charging. Hence, an external adjustable voltage regulator is used to have the desired constant voltage. A zener diode switches on to ensure charging is cut at the saturation point. The thing I enjoy about this is that you can charge up your batteries during the day, and then disconnect the solar cell at night or out hiking. Or just leave it in your office for the times when you forget to charge up. This is a great project for people who want to build something practical. Something you can use every day. It also makes a really nice gift for a gadget person in your life.