Re: Resonant frequency of twin coil? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 17 Jul 2007 10:29:03 -0300
From: Antonio Carlos M. de Queiroz <acmdq@xxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Resonant frequency of twin coil? (fwd)

Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Tue, 17 Jul 2007 01:36:02 +0200
> From: Finn Hammer <f-h@xxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Resonant frequency of twin coil? (fwd)
>
> Nicolas.
>
> Your resonant frequency in the tank is the same as the secondary res. freq.
>
> Keep in mind that the primary inductance is divided in 2, so that 1/2 is 
> in each primary coil. This means that each primary coil should have 1/2 
> the total inductance.
>   
By the drawing, it seems that the two primary coils are in parallel, not 
in series. If they are really
in parallel, the primary inductances shall be multiplied by 2, not 
divided. But it's simpler to just
divide the primary capacitor by 2 in the calculations.
If the primary coils are in series, you are right.

Antonio Carlos M. de Queiroz