Electrical and Technology

How to assemble a small photovoltaic (PV) panel using readily available materials.  Materials Needed Solar Cells : These are the core components that convert sunlight into electricity. You can buy individual solar cells online (e.g., monocrystalline or polycrystalline cells). Plywood or Acrylic Sheet : For the base or backing of the panel. Clear Acrylic or Glass Sheet : To protect the solar cells while letting sunlight through. Bus Wire and Solder : To connect the solar cells electrically. Tinning Wire : For easier soldering. Junction Box : To house electrical connections. Silicone Sealant or Epoxy : To secure and weatherproof the panel. Multimeter : To test voltage and current output. Tools : Soldering iron, wire cutters, screwdriver, and a drill. Steps to Make a Solar Panel 1. Plan Your Layout Decide how many solar cells you’ll use. Each cell typically produces about 0.5 volts, so for a 12V panel, you’d need around 24-36 cells (depending on their efficiency and your design). Arra...

Solar green houses are the enclosures where crops, vegetables, flowers, and plants can be grown under unfriendly climatic conditions. The plant growth gets affected by availability of light, moisture, ambient temperature and carbon dioxide. It is possible to design enclosures which admits sunlight when it is desired and at same time controls inside temperature within acceptable range. Usually, solar greenhouse find application in cold areas where vegetation is damaged due to extreme low temperature. GREENHOUSE EFFECT:- It is only because of greenhouse effect that our life on Earth is possible to a great extent. Without natural greenhouse the Earth's surface temperature would be 33℃ cooler - a chilly - 18℃ rather than the tolerable 15℃. The natural greenhouse is due to naturally occurring greenhouse gases such as water vapor, carbon dioxide, methane and nitrous oxide. If this is so then you may be wondering why we are so afraid with greenhouse effect. The reason of our w...