Re: 2 stage TC possible? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 28 Sep 2007 22:15:12 -0300
From: Antonio Carlos M. de Queiroz <acmdq@xxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 2 stage TC possible? (fwd)

Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Tue, 25 Sep 2007 01:04:03 -0400
> From: Marko Ruban <Marko@xxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: 2 stage TC possible? (fwd)
>
>
> What was the reason for using the last stage Tesla transformer in
> Marconi's setup?  Tuning into specific transmission radio frequency, or
> just plain amplification?
>   
Both. The transformer boosts the voltage and the resonant tank gives 
some selectivity. As much as you can have in a spark transmitter.
The alternative would be to charge directly the antenna and discharge it 
to the ground with a spark gap. Works, but the voltage at the
antenna is smaller and also the transmitted energy per "bang", and the 
output oscillations decay fast because the antenna is a low-Q element.
The transmitted energy spreads trough a wide spectrum.

Antonio Carlos M. de Queiroz