Windy Dankoff

Solar-electric (photovoltaic) pumping systems provide a welcome alternative to fuel burning generators, cumbersome windmills and hand pumps. A solar pump is alot like a windmill, which fills a tank when the energy is available. The BIG difference is that solar pumps don't slow down in summer, when winds are low. They provide the most water precisely when it is needed the most -- when the sun shines the brightest Solar pumps are simple to install and maintain. The smallest systems can be...

Ts easy for us to sit on our hands and bemoan our fate and the fate of our planet What can we do We are only

Mary Duffield is a retired English teacher living in Santa Cruz, California. She has spent many years living on sailboats and thereby making her own power. At 70+, Mary has more energy than most folks half her age. She uses this energy to foster communication about the issues that affect us all, topics like the environment and what we're doing to it. Mary's energy and strength comes from her ideas and her faith. She has more faith in us as human beings, and our ability to do whatever we set our...

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Maximimum Vertical size is 9 inches Maximum Horizontal size is 7.5 inches We use Macintosh computers to publish Home Power. We can set up and lay out your display ad. Camera ready advertising is also accepted. Long term display advertising is discounted, so buy ahead and save.

Electron Schematic Diagram A

So 4V must be wasted in R1. The current that flows in R1 is the same as current in the lamp 1A. Using R E I R1 4V 1A 4W. 3. The thermal-switch will be closed at 0 C. So current will be flowing in the 5W resistor. Using I E R I2 10V .5W 20A. The power dissipated can be found by using P IE P 20A x 10V 200 watts. 4. If S3 is open then I3 must be zero. At 25 C, S2 is also open so I2 is also zero. The only current that can flow must pass through S1 which was previously found to be 2.5A. 5....

Wind PowerQ Other

I now use OR plan to use the following alternative energy equipment (check all that apply). Please write to us here. Tell us what you liked and didn't like about Home Power. Tell us what you would like to read about in future issues. Thanks for your time, attention & support. Home Power Magazine Post Office Box 130 Hornbrook, CA 96044-0130 I am writing to make you aware of my personal concern regarding America's energy sources and our environment. I wish to support, and ask you to support,...

Richard Perez

Last month's battery column introduced small nicad batteries for portable applications. This month we are going to discuss recharging these batteries with an electronic charger. This charger is user programmable to fit any of the small nicad battery sizes, either in singles or assembled into packs. It is efficient and extends the battery's lifetime by proper recharging. Read on for how to build your own Pulsar. Any machine that is designed to recharge nicads must perform one basic function. It...

Send One Dollar For Information

CURRENCY & INCLUDE SHIPPING, 1 YEAR WARRANTY ON ALL ITEMS. ENERGY SYSTEMS AND DESIGN p.o . Box 1557, Sussex, N.B., Canada E0E 1P0 Resources What can we say about our natural resources. First, the classical resources such as coal, oil, gas, and minerals are being rapidly depleted. Also, many of these resources as well as nuclear power are too polluting to be used as they are now. Alternative sources of energy exist in solar, wind, water, and wave technologies. We must also...

Tablel Photovoltaic Home System Sizing Calculation

Location Louisville, KY, USA Peak Hours 5.5 System Voltage 12 VDC Approximate kW.-hrs. day 8.09 No. of Occupants 4 No. of Bedrooms 2 now (3 later) Inverter Efficiency 90 Vertically oriented, passively cooled photovoltaic fins with linear curved concentrators were incorporated into the design of a new solar home being constructed by Terry Reeser near Louisville, Kentucky. Although the site is near a major urban area, it is located almost a kilometer from the nearest utility line. Installing...

Voltage Level vs Daily Max Load

Voltage levels to be raised from 120 to 240 volts in order to meet ampacity requirements, then split into two 120 volt legs for appliances. Heavy loads such as boilers, electric stoves, motors, compressors, etc. were powered at the 240 volt level. Lighting, well sockets, and portable appliances were powered at the 120 volt level. We have come full circle in that our off the shelf DC appliances favor the 12 volt level, and ampacity is calling for 24 volts. DC does not lend itself to Edison's wye...

Letters to Home Power

We'll print your name & Dear Home Power People We have gone through the first 3 issues of your Home Power Magazine, not only once but several times and find them chock full of the type of information that people such as us are really hungry for. It is the best we have seen since John Shuttleworth's Mother Earth Magazine of which we have a full library from day one. It is like Mr. Shuttleworth says in his letter, Mother Earth is pretty dopey nowadays. In 1978 my wife...

Steve Willey

We started our home power system and our home energy business with small scale wind electric wind generators, simply because solar was not quite available in 1974. We are located on a hilltop with no water power or other electrical source. Our wind is not particularly good here, in fact in late summer there is NO wind for many weeks at a time. Never the less, as our only option, any help from the wind seemed better than running an engine generator. The only wind electric generating systems...

Zomeworks Ad

For every stationary home power producer there are many who roll down the road or float on the water. Many RVers have written in requesting articles about home power systems that move. Well, here's a mobile wind system that not only makes its own electricity, but also its own motive power. The Agua Alegre is a 35 foot long wooden sailboat. This Alden designed sloop was built in the mid-1950s and usually is docked in Santa Cruz, California. This yacht, like most boats, is a self-contained energy...

Systems

Batteries are securely mounted in waterproof cases, low and in the stern of the boat. Placement of batteries in any moving vehicle, especially sailboats, is critical. Since the batteries are very heavy, they should be located as low as possible and as close to the vehicle's center of gravity as possible. The Agua Alegre is a wonderous and harmonious system. Brian Green and I spent the night aboard, safely tucked in her wooden belly. A small storm was brewing and the wind machine on the fantail...

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Fig.2 - The Pulsar's Schematic and Parts List U2 is a very rugged device, being internally short circuit and overtemperature protected. The LM 317 is available in two different packages. The LM 317T has the smaller TO-220 case, while the LM 317K has the larger TO-3 case. In any case, the LM 317 must be heatsunk and the larger TO-3 case gets rid of heat better. While very much more expensive, the LM 350 gives the ability to move up to 5 Amps of current through the device. Most of the parts can...