Re: Critical rise time (RE: Terry's New Plane Wave Antenna)

["Tesla list" <tesla@xxxxxxxxxx>]

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

Hi  Terry,

I think Im still a little confused on the definition of "rise time" 
in the context of the topload voltage.  Is this the rise time of the 
enevelope of the ring up, or the rise time of a single 1/4 cycle 
sinewave, or perhaps some other definition??

Gerry R



> Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi,
>
> The time it takes for top terminal "energy" to reach a maximum has 
> been noticed with DRSSTCs.  Apparently, faster energy rise times 
> give better streamers.
>
> http://drsstc.com/~terrell/modeling/
>
> ScanTesla calls this "LERT" for Load Energy Rise Time.  But this is 
> the top terminal energy buildup over the first few cycles of a 
> single burst rather than the time it takes for the terminal voltage 
> to build up in a cycle.  The voltage during a single 1/4 cycle is 
> Vo(t) = Vm x SIN(2 x pi x Fo x t).
>
> The buildup of load energy is shown here on page 8.
>
> http://drsstc.com/~terrell/modeling/BigCoilDRSSTC.pdf
>
> LERT is defined as the time it takes the load energy to go from 10% 
> to 90% of the maximum.
>
> If this should be called "Critical Rise Time" rather than "Load 
> Energy Rise Time", I can change it.
>
> BTW - I still need to update ScanTesla and write better instructions still....
>
> Cheers,
>
>         Terry