Re: new coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>


Good question,

The power processed is the .5*C*V^2 times the BPS.  Normally the energy 
following a spark gap break rings in the primary and is transfered into the 
seconday within a few cycles (if tuned) and once it is totally in the 
secondary and the sparkgap quenches, the primary doesn't see it 
anymore.  If not in tune, the energy associated with a break has no place 
to go and must therefore ring in the primary longer until it is dissapated 
by the cap, wiring, and sparkgap. Since the ringing last longer, the Irms 
of the primary goes up and all of the power processed must be dissapated in 
the cap, wiring, and sparkgap goes.

Example:  primary circuit with no secondary to soak up the power to 
dissapate it in the streamers.  When the sparkgap fires, the energy will 
slosh between the primary inductance and the primary capacitance.  This 
will continue until all the energy is dissapated as heat (and light and 
sound, etc) as this is the only mechanism to sink the energy.  Some energy 
will be dissapated in the cap Irms^2*ERS of the cap.  Some will be in the 
primary wiring Irms^2*Wire_resistance and some will be dissapated in the 
sparkgap Irms*Vgap during conduction.  The Irms is averaged over the time 
between breaks.  Since the ringing last longer following a break, the Irms 
is larger.

Gerry R.


> Original poster: Motosk8er2@xxxxxxx
> hi gerry
>
>
> "Just had another thought about your hot primary.  If the coil is out of
> tune, all of the power is dissapated in the primary circuit (caps, wire,
> and sparkgap)." What does that mean?