Re: Early versions of Tesla's coil

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

Original poster: "RMC by way of Terry Fritz <teslalist-at-qwest-dot-net>" <RMC-at-richardcraven.plus-dot-com>

 > Original poster: "Jolyon Vater Cox by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
 >
 > in operation, are there any moving parts? Is the cam lever operated by an
 > electromagnet, for instance?

No, the only moving part is as I described - a sprung blade which is
positioned closer-to or further-away from a fixed blade, both ofwhich have
tungsten contacts secured to them. You operate the lever to change the spark
gap separation.

Please take a look at the pictures I took, the URL for which I sent to the
List last night "My Tiny TC-powered vacuum tester (grew from "Early
versions...")" was the title, more or less. The pictures are pretty clear
even if my description isn't.

 >  > The contacts merely act as a static gap. The design adopts a sprung
 >  > phosphor-bronze blade with a tungsten pad brazed to the end of it. this
 >  > bears down, via a cam lever, onto a similar tungsten pad.


Cheers

RMC, England