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Re: new coil

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?