Re: DC Tesla Coil output

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

Original poster: "Bart Andeson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <classi6-at-classictesla-dot-com>

Hi Chris,

When gap fires, the tank cap and primary oscillate at their resonant 
frequency. The oscillation is AC.

Take care,
Bart

Tesla list wrote:

>Original poster: "Chris Roberts by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <quezacotl_14000000000000-at-yahoo-dot-com>
>
>That is true that the tank capacitor is charged to only one voltage at a 
>time, but if you are charging it to +10,000 volts, then +10,000 volts, 
>etc, does the output on one end stay as +100,000 volts, then +100,000 
>volts, etc? I guess what I meant by my first question was whether or not 
>the polarity of the secondary output of a DC coil still changes. (thus 
>making it AC) From my limited knowledge of inductance, I'm guessing that 
>the output is still AC seeing as the magnetic field from the primary coil 
>still forms and collapses (when the primary goes from 0 to +whatever, then 
>back to 0 ) which causes a charge to flow back and forth in the secondary, 
>right?
>
>
><tesla-at-pupman-dot-com> wrote:
>Original poster: "Terry Fritz"
>
>Hi Chris,
>
>It is all the same. When a gap fires the cap is charged to a given
>voltage, say +10000V. For that moment in time, the cap voltage looks just
>like DC to the coil. If the cap is -10000V the next firing or +10000
>again, it really does not matter. You second question is messy ;-)) but see:
>
>http://hot-streamer-dot-com/TeslaCoils/MyPapers/modact/modact.html
>
>Cheers,
>
>Terry
>
>At 11:56 AM 7/26/2003 -0700, you wrote:
> >Hi everybody,
> >It's been a while since I've asked a newbie question, so I guess it's time
> >again. =D Anyway, if you input pulsed DC into a tesla coil, (like a
> >voltage doubled MOT coil) is the final output (spark) still pulsed DC or
> >does it switch back to AC? Can anybody also expalin why it outputs
> >whatever it outputs? Tha! nks again!
> >
> >
> >-Chris
>
>
>
>-Chris
>
>
>
>