Реферат: Wind Power Essay Research Paper The wind

I built a windmill of my own. The goal of the windmill was to get

as much electrical energy as possible. This immediately ruled out any

new-wave type windmill. Instead, I went to Home Depot and got a returned

ceiling fan. I took off the white box wit h the motor and switches and

left the spinning black box on. I mounted the blades on the black box. I

put this on a post and a support. Then I got a Maxon DC motor and, after

fashioning a clamp-like device to hold the motor on to the support, I put

a r ubber tire on the spinning shaft of the motor and adjusted it so that

this rubber tire would be rotated by the spinning black box upon which the

blades spun. Next, I attached two large wires to the motor. I then made

a circuit. This circuit was a littl e difficult to make. It had a place

for the wires from the motor, ran through resistors and a variable

resistor, and then an Ammeter and then the place where I was to plug in

the light. In parallel was a place for a battery and/or a voltmeter.

After a few minor adjustments, I was ready to test my product. At first,

when the circuit was completed, the current flow was very low. There were

a number of adjustments I had to make in order to make the windmill work

better. First, I moved the fan that was blowing air on the blades,

farther away. I added a seco nd fan and adjusted the angle of these two

so that they were blowing at the center of the windmill. I turned the

windmill around so that it faced away from the fans. I loosened the

screws that held the blades on. I inserted a piece of cardboard 1/3″ th

ick into this space. This was to adjust the pitch angle of the blades so

that they would “cut through” the air better. The adjustments I made were

excellent. They worked. When I connected everything, I began to notice

an immediate change in the Ammete r. I was seeing as much as 20 milliamps

and 6.1Volts. Before, there were 5 milliamps and 3.5 Volts. I began to

experiment more with the angles of the fans, distances, and stuff like

that. For my light source, I used a green light. It had an internal