[TMSC2011-Corum] See http://www.teslauniverse.com/photos/2011-tesla-conference#num=content-16\ 67&id=album-36 ...
1737
Greg Leyh
lod@...
Nov 10, 2011 5:00 pm
Hey All, Thought you might be interested in a project that has large potential for wireless power research. As an experiment in unorthodox scientific funding...
Greg, To be useful for wireless transmission research the NLL system will require two independent deep earth ground terminals so it may be configured as an...
1740
Greg Leyh
lod@...
Nov 11, 2011 7:15 am
The earth connection (~5 ohms) should be considerably less than the 29,000 ohm operating impedance, so it shouldn't produce a noticable loss. I hope that...
Greg, The machine will work much better with two independent ground terminals, quo erat demonstratum. They have to be deep and of large surface area--more than...
Greg, By "29,000 ohm operating impedance" do you mean the impedance at the free ends of the two resonators? Gary ... potential ... placed ... the ... facility,...
1743
Greg Leyh
lod@...
Nov 12, 2011 7:30 pm
That would be the impedance of the entire secondary, at the operating frequency. Since Q=Z/R, if we keep all of the resistive losses small [including the...
1744
Greg Leyh
lod@...
Nov 15, 2011 4:23 am
Hi Harry, btw, 29K is the Zsec of the full-scale towers. The 1:12 scale towers in the wireless test are about 34K. Indeed, higher k definitely helps if you...
Greg and Harry, When described using the transmission line theory model the impedance approaches infinity at the top of the resonators and zero at their ...
Hi Gary, Tesla states below that a low Z (impedance) ground in his mode of operation is absolutely necessary for transmitting energy. In Greg Leyh's mode of...
Harry, You wrote: "GL's setup cannot be modeled with transmission line theory nor do 1/4 wavelengths have any meaning." Greg's scaled-down NLL prototype...
1750
Greg Leyh
lod@...
Nov 22, 2011 8:23 pm
Hi Gary, Actually, I didn't design the twin prototypes as 1/4 wave resonators. They're designed and modeled largely as lumped-element resonant transformers. A...
Hi Gary, We agree that Tesla and GL test sets differ in two ways: A) There is no ionized path between the devices, B) The receiver performs a synchronous...
Greg, I totally agree with your 1/4 wave remarks. My SPICE simulation only computes lumped elements. Do you remember the voltage output of your transmitter? I...
Greg, I suspected you had tuned the twin prototype resonators as lumped elements rather than 1/4-wavelength resonators. This greatly reduces the strain on...
Harry, You wrote, "If we extrapolate the data out to one wavelength, the coupling capacity is so small that my calculator will not perform." That's because...
Greg, Harry, et al, [development] "The Application of Transmission Line Resonators to High Voltage RF Power Processing : History, Analysis and Experiment" ...
Harry, I'm a little pressed for time right now. The following should answer some of your questions plus others that you haven't thought of yet. Regards, Gary ...
... I assume Greg is using zero voltage switching, as you're doing with your Tesla coil driver circuit. It's my understanding that optimum performance is...
... Zero current switching actually tends to be the most benign mode of switching IGBT's. Since the primary circuit of a TC always has significant leakage...
1762
Greg Leyh
lod@...
Nov 25, 2011 12:26 am
... I'm using ZCS at the start and ZCS+ZVS at the end of the pulse. ZVS is of course impossible at the start. ;> ZCS is greatly preferred, since switching...
1763
Greg Leyh
lod@...
Nov 25, 2011 1:06 am
... Yes, CW would be the best for power xmsn. I performed my wireless tests in pulse mode though, for the simple convenience that my twin coil rig was already...
"We now ask, "What is the best break speed to run?" In the case of a single RLC tuned circuit, it is a straightforward exercise to show that the desirable PRF...
Greg, Once again, thanks for your explanation. Back in 1992 Corum and Daum inquired about the state-of-the-art in solid-state transistor design. It would be...
1766
Greg Leyh
lod@...
Nov 27, 2011 7:51 pm
Sure. The Valve Hall at the end of the Pacific Intertie has arrays of solid-state switches that chop the 500kV 2500A DC incoming power: ...
Hey Greg, I'm impressed. Not a typical electronic design! Cheers, Harry ... From: "Greg Leyh" <lod@...> Sent: Sunday, November 27, 2011 11:51 AM To:...
