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Re: Wireless transmission of power,

Original poster: Ed Phillips <evp@xxxxxxxxxxx>

Original poster: "Lau, Gary" <gary.lau@xxxxxx>

This may be beside the point, but how the HECK do you build a secondary
to resonate at 8 Hertz?  What size topload?  Please give details beyond
"I hacked my secondary in half..."

Gary Lau

Here's my design:

Cylinderical coil
Resonant frequency = 8 Hz
Coil diameter = 1000 feet
Coil length = 2000 feet
Top load is sphere of 1000 feet diameter, C =~ 6600 uufd.
Distributed C =~ 15100 uufd
Total C =~ 21700 uufd
L = 18,238 henries
Wire size = #10 (0.1 inch dia)
Wire length = 38,340,000 feet
Wire weight = 1,219,247 pounds
AC resistance = 38,298 ohms

Increase wire diameter to 1 inch
Wire weight = 121,924,700 pounds
AC resistance = 382.98 ohms
Winding factor =~ 0.53

Quite a coil and top load!  (Way, way bigger than Wardenclyffe!!!)
Tesla's world power system had a top load consisting of two concentric
spheres, one grounded, of the diameter of the earth.  I'll give the
design of that coil some other time.