Re: Resonant charging

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 7/29/02 12:17:26 PM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:

Weazle,

I often deliberately utilize the resonant condition in my PT powered
systems, but I usually go at least slightly LTR.  Some of the old
spark transmitter books mention the use of a somewhat LTR
cap value for smoother operation of the system.  If the 
transmitters you read about used a static gap,
then they could have set the gap to fire at a lower voltage than
what was theoretically possible.  Also, if they used a high 
breakrate, the voltage would never get too high even with a rotary.

Cheers,
John


>
> The power transformers they used had a turns ratio of 1:300, whereas
> our NSTs and OBITs are 1:100, meaning they must have been getting a
> very high secondary voltage in a resonant condition.  I'm surprised
> that the plate glass caps that they where using in those days could
> stand that sort of strain.  The whole thing seems to go against our
> policy of trying to avoid a resonant condition, unless under special
> conditions like Gregg's D.C. resonant charging for instance.