- #1
MikeShelton
- 9
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Homework Statement
My son and I have built a wind turbine following the plans on: Build your own Wind Turbine Designed by Dave Mussell http://www.re-energy.ca/docs/wind-turbine-cp.pdf" .
These plans were inspired by the Picoturbine: link to manufacturer and link to PDF.
We used 30 AWG gauge wire at first, but didn't get enough voltage to light the Light Emitting Diode (LED). So, we re-wound the coils with 300 turns of 27 AWG wire and we still don't have enough voltage to light the LED.
The turbine spins nicely, and the voltmeter reads around 47 when set to DCV 2000m.
We want to know why the LED is not lighting up.
Any suggestions would be welcome!
I'll post pictures in follow up posts.
Thanks,
Mike and son
Homework Equations
I don't have an equation that gives the 1.5 volts out of 4 coils of 300 turns of 27 AWG wire. The closest equation I can find is:
Wheeler's Formula (single layer air core coils)
L(uH) = (r^2) * (N^2) / (9*r + 10*h)
where:
r = coil radius (inches)
N = number of turns
h = coil height (or length) in inches
But this doesn't yield volts, and it doesn't tell me how long the 27 AWG coils should be.
The Attempt at a Solution
Right now, we are using 4 coils of 300 turns of 27 AWG and getting about 0.047 volts, which isn't nearly enough to power the LED.
We want to know why the LED is not lighting up.
Any suggestions would be welcome!
I'll post pictures in follow up posts.
Thanks,
Mike and son
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