Here's a short video of a Bedini SSG machine in operation. The early part is dark, as I left the lights off to better see the flashing LED. Some of the video is shaky, due to the use of a very small handheld digital camera.
John Bedini has had a long career in electronics and audio engineering. As the story goes, he designed a simple motor-generator for a friend's daughter to make as a school science fair project. This became know as his "School Girl" motor, later adapted as the "Simplified School Girl" (SSG) motor. Bedini has his own theories about energy which are not widely supported by scientists, but it is not my purpose to present his theories or criticize them. What the SSG device does is pretty clear, and that's what we're going to build. Though the SSG is under patent, anyone is allowed to build one for their own use. My version here is not endorsed by John Bedini, his company, or anyone but myself. I learned to build it after studying videos of working versions on the Internet, drawing on my own past experiments in building electrical projects at home.
MATERIALS LIST TO BUILD A 16 INCH BEDINI SSG MOTOR/GENERATOR
*1 16 x 1 inch aluminum bicycle wheel (no tire!). The rim can be plastic, spoked or spokeless, but it can't be steel. The rim must be non-magnetic.
*12 ceramic-ferrite magnets, preferably rated C8. (This is a rating of magnetic intensity.) I used rectangular magnets bought from a dealer on eBay, but you can get the same magnets from Radio Shack, Catalog #: 64-1895 or online. The magnets do not have to be any certain shape, but they ought to be large enough to affix to the inch-wide bicycle rim. Contrary to what you often hear and read, you do not have to use expensive neodymium magnets; in fact, in some applications they can be too strong for successful operation.
*1 1/2 inch wide, 14 or 15 inch diameter rubber bike wheel liner. These are sold to protect inner tubes from rubbing against the heads of the spokes.
*1 transistor. The common and cheap 2N3055 works fine. Other types will work as well, just make sure they can handle the voltage..
*1 potentiometer, with resistance varying between 1 Ohm to 5,000 Ohms. This will allow you to tune the device and regulate the speed of the wheel.
*2 diodes, 1 1N4001 and 1 1N4007.
*1 470 Ohm resistor.
*1 Ne-2 high voltage miniature neon bulb.
*a 3 x 6 inch piece of perforated circuit board, like this stuff. The exact dimensions are flexible, so long as you have room for all the components.
*about 300 feet each of two gauges of enamel coated magnet wire. The wire should be about 4 gauges different. I used 20 gauge and 24 gauge. Don't use too fine a gauge or the higher resistance may interfere with the proper function of the bifilar coil.
*1 coil form. I used an old plastic spindle formerly wound with speaker wire. It measures 3 inches in diameter and stands 3 inches high. The hollow center, which you will pack with iron to make an electromagnet, is 1 inch in diameter. Don't use a metal spool, or any spool with metal in it.
*Iron or steel wire, or thin rods to fill the core of the coil form. Many people building SSGs use welding rods. I used wire surveyor's flags, those whip-like orange flags you find in big box hardware stores. They're used to mark out land for surveying. They're 16 gauge, stiff, but flexible. Pull off the plastic pennant and you've got a good 1.75 feet of steel wire per flag. To fill up a 3 x 1 inch cylinder, you'll need maybe a dozen flags.
*Connecting wire. I used 22 gauge plastic coated bell wire (also called annunciator wire or hookup wire). You'll need 10-12 feet.
*9 ring connectors, sized to fit 22 gauge wire and able to slip over 8/32 bolts.
*4 brass 8/32 bolts, 2 inches long, with 1 washer and 2 nuts apiece.
*3 alligator clips, 2 inches long each.
*2 nylon zip ties, 12 inches long
*Basswood or pine sticks, squared, 1/2 inch x 1/2 inch, at least 16 inches' worth. Also 1 piece of 3/8 x 3/8 inch basswood, 6 inches long.
*Poplar rods, square, 1.5 x 1.5 inches, at least 38 inches' worth. This is for the upright wheel supports and braces, if desired.
*1 pine plank. 16 x 15 x 1 inches. This is your base. The exact measurements of this are flexible, but it ought not be much smaller than this.
*Optional: 6 2 x 2 inch L brackets, with 4 screws per bracket. Use these to brace the upright if you don't want to make wooden braces.
*4 rubber or plastic appliance 'feet' with screws.
*Super glue, and plenty of it.
*6 2 inch wood screws. I used short deck screws, but any flat-headed wood screw will do.
*2 batteries of matching output. This particular wheel works fine with 6 or 12 volt batteries, or with smaller batteries linked in series to total 6-12 volts. Alkaline or lead-acid batteries work equally well, and what's more surprising, you can charge both kinds with the SSG's output.
*For the induction coil and light I used a ready-made set made by Reelight, made in the United Kingdom but available from various retailers in the USA. All Reelight sets work much the same way, with a factory-made induction coil, connecting wire. and LED light. You can make your own coil, but the Reelight set is handy and attractive.
TOOLS: power drill, miter saw, screwdriver, wire cutters, crimp tool, soldering iron and solder, medium and fine sanding block or paper, varnish or other clear wood finish, a brush to apply it. A carpenter's square, rule, and pencil would be useful too.