| |  | Author | Message | < Off Topics ~ Electronics on-line: the Tesla coil | | eric | | Posted: Thu Oct 12, 2006 10:28 pm Post subject: Electronics on-line: the Tesla coil | | | | Site Admin Joined: 01 Jan 1970 Posts: 311 | The idea is simple, really. Make a transformer
with a huge step-up ratio, (secondary
winding has far more turn
than primary winding), and tune both
windings to resonance at the same frequency.
If, under these conditions, a
pulse is applied to the primary winding
(for example, by means of a spark),
the voltage across the secondary will
rise to level at which substantial discharges
can be observed, usually in the
form of light flashes, arcs and coronas.
Meanwhile, it appears that many
hobbyists find pleasure in building
such a Tesla transformer, and use it to
create wonderful spark showers.
Indeed, it has become something like a
sport to ‘draw’ the largest artificial
flashes of lightning. Tesla’s own record,
however, has not yet been broken or
even equalled — in 1899, his experimental
setup in Colorado Springs produced
an arc of 41 metres (approx. 125
ft), wrecking the electricity supply in
the whole area.
As an indication of the popularity of
the Tesla transformer, there are no
fewer than 120 websites connected to
the Tesla Coil Webring
(http://www.webring.org/cgi-bin/web
ring?ring=TeslaRing&list). Alternatively,
go to http://www.webring.org, and enter
the keyword ‘tesla’. The site at
http://www.pupman.co, also has a long
list of Tesla-related URLs.
From the long lists we picked some
examples for those of you whose
curiosity has been aroused. On Stefan’s
Tesla pages at http://privat.schlund.de/s/
skluge/toc.htm we found an extensive
description of the
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