Re: Early versions of Tesla's coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <teslalist-at-qwest-dot-net>" <davep-at-quik-dot-com>


>It is very possible Tesla himself designed and maybe

>constructed vacuum tube Tesla coils.

         The three electrode vacuum tube had not yet been
         invented when Tesla was working (say: pre 1905).
         If Tesla sketched out use of vacuum tubes later,
         I am unaware of any record surviving.  At The
         Time (pre 1910) generating even a watt or so with
         Vacuum Tube techniques was the limit.  By the end
         of WWI, with Major Effort a KW or so was doable,
         with Massively Parallel banks of tubes.  For
         (typical) TC freqs spark, arc, or even direct
         alternator were the way to go for KW +/-
         power range.

         best
         dwp