Re: [TCML] How about some Tesla Coiling?

["Gary Peterson" <g.peterson@xxxxxxxxxxxx>]

http://www.tfcbooks.com/tesla/1919-07-00.htm

ELECTRICAL OSCILLATORS
by Nikola Tesla
Electrical Experimenter - July 1919

Few fields have been opened up the exploration of which has proved as 
fruitful as that of high frequency currents.  Their singular properties and 
the spectacular character of the phenomena they presented immediately 
commanded universal attention. Scientific men became interested in their 
investigation, engineers were attracted by their commercial possibilities, 
and physicians recognized in them a long-sought means for effective 
treatment of bodily ills.  Since the publication of my first researches in 
1891, hundreds of volumes have been written on the subject and many 
invaluable results obtained through the medium of this new agency.  Yet, the 
art is only in its infancy and the future has incomparably bigger things in 
store.

> From the very beginning I felt the necessity of producing efficient 
apparatus to meet a rapidly growing demand and during the eight years 
succeeding my original announcements I developed not less than fifty types 
of these transformers or electrical oscillators, each complete in every 
detail and refined to such a degree that I could not materially improve any 
one of them today.  Had I been guided by practical considerations I might 
have built up an immense and profitable business, incidentally rendering 
important services to the world.  But the force of circumstances and the 
ever enlarging vista of greater achievements turned my efforts in other 
directions.  And so it comes that instruments will shortly be placed on the 
market which, oddly enough, were perfected twenty years ago!

These oscillators are expressly intended to operate on direct and 
alternating lighting circuits and to generate damped and undamped 
oscillations or currents of any frequency, volume and tension within the 
widest limits.  They are compact, self-contained, require no care for long 
periods of time and will be found very convenient and useful for various 
purposes as, wireless telegraphy and telephony; conversion of electrical 
energy; formation of chemical compounds through fusion and combination; 
synthesis of gases; manufacture of ozone; lighting; welding; municipal, 
hospital, and domestic sanitation and sterilization, and numerous other 
applications in scientific laboratories and industrial institutions.  While 
these transformers have never been described before, the general principles 
underlying them were fully set forth in my published articles and patents, 
more particularly those of September 22, 1896, and it is thought, therefore, 
that the appended photographs of a few types, together with a short 
explanation, will convey all the information that may be desired.

The essential parts of such an oscillator are: a condenser, a self-induction 
coil for charging the same to a high potential, a circuit controller, and a 
transformer which is energized by the oscillatory. discharges of the 
condenser. There are at least three, but usually four, five or six, circuits 
in tune and the regulation is effected in several ways, most frequently 
merely by means of an adjusting screw.  Under favorable conditions an 
efficiency as high as 85% is attainable, that is to say, that percentage of 
the energy supplied can be recovered in the secondary of the transformer. 
While the chief virtue of this kind of apparatus is obviously due to the 
wonderful powers of the condenser, special qualities result from 
concatenation of circuits under observance of accurate harmonic relations, 
and minimization of frictional and other losses which has been one of the 
principal objects of the design.

Broadly, the instruments can be divided into two classes: one in which the 
circuit controller comprises solid contacts, and the other in which the make 
and break is effected by mercury.  Figures 1 to 8, inclusive, belong to the 
first, . . . 



_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla