How to Make a Solar Fan

Solar panels convert energy from the sun to produce electricity. The bulk of modules use wafer-based silicon. A solar fan, powered by a 6W solar panel, is perfect for cooling a garage, hot attic, RV, cabin, boat, basement, trailer or other small sized space. Alternatively, use it as an exhaust fan in your studio or shop. Wherever you need to move air out, the solar fan is a green solution.

Things You'll Need

  • 6 watt, 12 volt solar panel
  • Circuit box
  • 12 volt, 0.25A PC Fan
  • Large 25V capacitor
  • Wire
  • Solder
  • Solder iron
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Instructions

    • 1

      Connect the positive lead from the panel to the positive lead on the capacitor to the positive lead on the fan by soldering each connection point.

    • 2

      Connect the negative lead on the panel to the negative lead on the capacitor to the negative lead on the fan by soldering each connection point. The solar panel will power the fan and all surplus power will be stored in the capacitor, like a small battery. When darkness overshadows the panel, the extra power in the capacitor keeps the fan going.

    • 3

      Cut a hole in the lid and base of the box the size of the fan and hot glue the parts in.

Tips & Warnings

  • Wear safety goggles when soldering.

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