Please disproof this video- it could be a hoax

[Jeg]

Hi guys
I'd like to ask what do you mean by tape wound core? Tape wound like the special tape material like Don Smith used or just a normal core with some electrical tape around its legs?

[gyulasun]

Hi Jeg,

If you search for the word 'Hypersil'  you will find info on this core type, the best is to read it from its originator, Westinghouse Co. in 1942. See here a 108 page book on it from Westinghouse here: http//www.tubebooks.org/Books/hipersil.pdf

Tape wound is explained briefly in PDF page 5 and the thickness of the tapes also counts, see PDF page 22 about the thichnesses used in Tabelle "C cores test guarantees"  (in the last column 'cps' means cycle per sec i.e. Hertz). 

Gyula

[Jeg]

Hi Guyla, nice to see you again.

Thanks for the info. I will take a look..