mini-Tesla

[slapper]

Great work EMdevices 

The Wireless Energy research from MIT is interesting. Here is a cropped image from the bottom of the following document:


http://www.mit.edu/~soljacic/MIT_WiTricity_Press_Release.pdf

I think this was posted before but couldn't find it. What attracted me to their Wireless Energy research was this document:
http://www.sciencemag.org/cgi/content/full/317/5834/83 which goes into great detail in self-resonant coils.

Their first reference is Tesla's Wardenclyffe patent. Funny thing is, unlike MIT's work, Professor Meyl's demo verifies Telsa in that it receives more energy than it transmits.

I guess that is what happens when your in the business of selling IP. 

Take care.

Smart ass'ed comment quota now satisfied. 

nap

[hartiberlin]

Very interesting.
Here is the full picture from the PDF file enclosed.

[BEP]

Has anyone ever seen a photo of the transmitter and coil? Neither one of the coils shown are the transmitter. The one on the left might be called a re-transmitter.

[EMdevices]

thanks for the links, slapper

I now understand what they're doing a bit more.Ã,  Did you guys see their diagram in the pdf file?Ã,   The transmitter is just one loop of wire like they say in the article.Ã,  What's interesting here is that the coils are not connected to anything, they're just resonators at a certain operating frequency and bridge the gap with resonant energy.Ã,   You then just bring in your transmiter and receiver loops close to the resonators, and they behave as if they're very close together and coupled.Ã,   I like the theory they present.Ã,  This is close to Tesla coils.  The one turn loops are like the primary (or pancake) coils driving the tesla secondary coil, and the resonator multi turn coils play the part of the secondary in the tesla coil.

EM

[Localjoe]

@EmDevices

I am weary of the "mit" version they never let too many secrets out to the public.... It may work but its not the package were looking for   One interesting thing I think i see there is bare wire. It looks like they just wrapped cloth or something at the tops to keep the spirals seperate.  that may be something to note.. dunno if its important but its kind of out of place for the design
                                                                                                                 Joe