background preloader

Home Power Magazine: Solar

Home Power Magazine: Solar

http://www.homepower.com/

Related:  DIY Clean EnergyNewsEnvironmental Design and SustainabilitySolarHouse, building, energy, water

Project Build A Solar Panel: Step by step guide to building a solar panel with complete illustrations Introduction A solar cell's purpose is to generate electricity through the release of electrons from a material that is bombarded by electromagnetic radiation or photons. Most crystalline solar cells are sensitive to visible radiation from 400 - 700 nanometers, which correspond to 3.1 - 1.8 electron volts, of the visible region as shown by ACEPT W3 Group (1999) and also into the near infrared spectrum. As the wavelength of the electromagnetic radiation increases, the amount of electron volts decreases.

Greece Could Seize Personal Assets; Portuguese banks gamble with government debt - ValueWalk Greeks have to declare all their wealth From January 2017, 8.5 million Greek citizens have to file a declaration of their belongings. The government is on the hunt for real estate, jewellery, art and even cash – outside the banking system. Before government implements new tax, a directory of the soon-taxed wealth has to be prepared.

Solar Panel Testing Shunt Regulator I designed the Solar Panel Testing Shunt Regulator to function as a variable voltage shunt regulator for measuring the power output of small solar panels. I wanted to be able to load the output of a solar panel with a variable load to obtain various output voltage levels and measure the corresponding current flow. Repeating current measurements at various voltage levels to characterize a solar panel without having the output voltage level drift. The shunt regulator has a two position range switch. A high range where the shunt regulator starts to conduct at about 28 volts at the minimum shunt setting and a low range that the shunt regulator starts to conduct at about 15 volts with the minimum shunt setting.

Tesla's Big Mistake? While experimenting with a long, thin 'secondary' coil from a Tesla Coil, I suddenly connected up several things in my mind which had been separate up to that moment. After years of messing with Tesla Coils, I finally see what Tesla was up to with single wire transmission, with resonant coils, and with longitudinal waves. See if the following doesn't make sense.

Thermal Mass & Energy Efficient Design: How Much is Enough? by guest author, Ashley Lubyk Thermal Mass Defined When it comes to building an energy efficient home the discussion often rests on how much insulation should be in the walls, in the ceiling, under the slab, etc. But as I’ve written about before, energy efficiency is about more than just R-values. A house also benefits from having well placed windows balanced with a calculated amount of thermal mass to passively supply heating and cooling requirements. But how much thermal mass is enough?

How I built an electricity producing Solar Panel Several years ago I bought some remote property in Arizona. I am an astronomer and wanted a place to practice my hobby far away from the sky-wrecking light pollution found near cities of any real size. In my attempt to escape city slicker yuppies (you know the kind, the ones that like to blab loudly on their cell phone while they work on some business administration degree in a cyber cafe somewhere in Trendyland.) and their light pollution, I found a great piece of remote property. The problem is, it's so remote that there is no electric service available. That's not really a problem. No electricity equals no light pollution.

ZNet About 1,600 people have so far signed up on the We Stand Site. We need a great many more for this effort to sustain positive activity.Please Sign. Please take the statement to relatives, friends, schoolmates, and workmates. Please comment anywhere online, or in social media, or by blogging, or perhaps writing an article, or prodding alternative media to relate to the effort.Will you Sign? Will you seek other signers?fhdInitial signers include:Michael Albert, Noam Chomsky, Omar Barghouti,Walden Bello, Medea Benjamin, Patrick Bond,Bill Fletcher, Linda Gordon, Andrej Grubacic, Chaia Heller, Pervez Hoodbhoy, Kathy Kelly, Joanne Landy, Robert McChesney, Boaventura Santos, Marina Sitrin, Norman Solomon, and David Swanson

untitled The Compact Door has been designed to incorporate the advantages of both Roller Shutter and Overhead Sectional Doors and to overcome their inherent disadvantages. What makes the Compact door different from all other Industrial doors is its unique patented rail system. On opening the door panels fold upwards into a compact space above the door similar to a roller shutter. However, unlike a roller shutter the Compact Door panels are insulated and can also be fully glazed. A wicket door can be built into the door panels if required. The smooth and quiet movement of the panels uses little energy this guarantees a longer life cycle and lower maintenance costs. Our Simple DIY Home Solar Power System Bringing some of the benefits of electrical power to our off-grid home has been a hit-or-miss affair. Over the years we’ve tried some very simple approaches to lighting and small battery recharging for our flashlights, such as hauling a 12 volt car battery to a small rural school about a half mile away every time it needed to be topped up. This was time consuming and inefficient. But we didn’t want to lose the feel of our simple home by bringing in a large generator and the jugs of gas needed to run it, and the prospect of setting up a wind turbine or solar array seemed expensive and a technological eyesore in a natural setting. …developing Eartheasy.com using a dialup internet connection on a phone line strung through the woods was challenging… Today, with the help of a local expert on off grid home solar power and alternative energy systems, we have the best of both worlds.

Growing and Rediscovering Hedgerows By Carol Ekarius Hedgerows have long played an important role in agriculture. Since Bronze Age people first used them to divide fields, mark property boundaries and control livestock in Europe more than 5,000 years ago, farmers around the world have appreciated the benefits hedgerows provide. 300w pedal generator High power Pedal generator (300 watts) 15/04/10 Click image for Hi res version This is my latest attempt at building a highly efficient powerful pedal generator. Pedalling a stationary bicycle can at times be a little tiresome therefore I wanted to make an as efficient as possible pedal generator so for every joule of energy I exert I then harvest the maximum amount of power out.

To protect the revolution, overcome the false secular-Islamist divide - Opinion It is impossible to exaggerate the significance of the momentous events that have drawn global attention to Egypt as its people continue to struggle with the unfolding drama of their revolution. There are two evidently opportunistic events that have come together to signal a dreadful attempt by the Muslim Brotherhood to claim the entirety of the Egyptian revolution for themselves, pretty much on the same model that the Shia clerics hijacked the Iranian revolution of 1977-1979 - with the crucial difference that Egyptians in their tens of thousands have poured into their streets and are far more alert and vigilant to protect the totality of their revolution than Iranians were more than thirty years ago. The first event revolves around President Morsi grabbing (and then rescinding) more power than he was granted by the free and fair election that - with a narrow margin - sent him to the presidential palace. But the devil is in the details.

Related:  off grid livingEnergyHome ImprovementPower Generation & StorageGreen tech and infoNew Energy InitiativesEnergyLiving off the grid