Re: DC Spark gap coils, why not current limit on the LV AC side?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Greg Leyh <lod-at-pacbell-dot-net> 

Actually, the circuit would work just fine as a resonant charger with the 
inductor in the primary circuit -- complete with the desired voltage 
doubling on the load capacitor.

In many ways it would be an advantage to place the inductor in the lower 
voltage primary circuit.  The disadvantage to this scheme however would be 
the voltage overload seen by both the primary and secondary coils of the HV 
transformer -- both would suffer a 2x voltage stress during the resonant 
charging cycle.

Locating the inductor after the rectifiers places the 2x stress solely on 
the rectifiers, thus relieving the transformer.

-GL



>Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net>
>I'm interested in the idea of DC Tesla coiling, and was wondering, why is 
>it that you cannot simply put a ballast on the LV side of your 60 hz AC 
>step up transformer and use that to prevent your rectifiers from blowing 
>when the spark gap fires? I understand this would not allow for the 
>doubling of the peak voltage of the capacitor like when a charging reactor 
>is used on the HVDC output, but it seems like it would limit the current. 
>I guess the problem of rotary gap power arcing still exists when a ballast 
>is placed on the LVAC primary side of the transformer?
>
>---Eric