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Re: Tesla's Radio Circuit (was tuning more accurately than 5%) (fwd)



---------- Forwarded message ----------
Date: Thu, 23 Jul 1998 05:13:18 +0000
From: "John H. Couture" <couturejh-at-worldnet.att-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Tesla's Radio Circuit (was tuning more accurately than 5%)


  Richard, All -

  I disagree about Tesla having "honed what was first just a glorified
induction coil system". The induction coil and the Tesla coil are two
completely different electrical concepts.

  The induction coil stores electricity in a coil and produces a high
voltage (inductive kick) when the circuit is OPENED. The Tesla coil stores
electricity in a capacitor and produces a high voltage (in the secondary)
when the circuit is CLOSED. There is much more.

  However, this is not the important radio aspect of the Tesla coil that
Marconi stole from Tesla. Up until the time of Tesla's "Tesla coil"
invention it was impossible to transmit more than microwatts using Hertz's
circuits and radio waves. Tesla's invention was a dual RCL circuit that made
it possible to go from microwatts to megawatts in radio transmitters. This
is the concept that Marconi stole from Tesla. The US patent department was
conned by Marconi into believing Marconi's circuit was a different concept.
Even today the radio concept of Tesla's invention is not well known or
understood.

    John Couture

-----------------------------------------------------

At 09:33 PM 7/21/98 -0600, you wrote:
>
>
>---------- Forwarded message ----------
>Date: Tue, 21 Jul 1998 00:58:30 -0400
>From: Richard Hull <rhull-at-richmond.infi-dot-net>
>To: Tesla List <tesla-at-pupman-dot-com>
>Subject: Re: tuning more accurately than 5% (fwd)
>
>
>
>Tesla List wrote:
>
>> ---------- Forwarded message ----------
>> Date: Sat, 18 Jul 1998 23:20:06 -0700 (PDT)
>> From: Michael Nolley <mhnolley-at-willamette.edu>
>> To: Tesla List <tesla-at-pupman-dot-com>
>> Cc: tesla-at-pupman-dot-com
>> Subject: Re: tuning more accurately than 5% (fwd)
>
>
>
>>  how did Tesla himself
>> conceive of the Tesla coil first, theory or experimentation?  There are
>> accounts of him recieving a "vision" about the operation of the AC motor
>> in Prague in 1896-- was Tesla primarily a theoretical or an experimental
>> genius?  I don't know much about his handbooks/ journals etc.  Perhaps
>> one of you could enlighten me.
>>                         --Mike
>
>  There is no single recorded lightbulb event for the Tesla coil.
Certainly not
>like the much repeated rotating magnetic field illumination.  Tesla slipped
into
>the thought of the tesla coil sometime between 1890 and 1892.  Probably after
>noting and studing the writings and work of Kelvin and Lodge.  He honed
what was
>at first just a glorified induction coil system into the air core system over a
>period of time.  He never published much of anything and it is only through the
>efforts of Thomas Commerford Martin, that any thing exists of the period
between
>the induction motor and his showing up with working air core Tesla coils about
>1893-1894.
>
>Richard Hull
>
>