Rich Grise wrote:
> [crossposted: sci.electronics.design,sci.electronics.basics
> followups-to: sci.electronics.basics]
> On Mon, 07 Aug 2006 08:40:09 -0700, siliconmike wrote:
> > I'm a newbie on ballasts
> > However I'd like to play around with the voltage waveform after a tube
> > lits up.
> > For example providing a triangle wave (instead of sine) voltage to the
> > tube at various amplitudes etc.
> > So, how does a typical voltage waveform look across a typical tube?
> > And how does a current waveform look for current flowing into a typical
> > tube?
> > And next, how can I make / integrate a ballast that will shoot the
> > waveform immediately after the tube lits up?
> > Any hints/ advise / discussion / pointers would be greatly appreciated.
> The voltage waveform will spike up to the ignition voltage of the plasma,
> and then plummet to practically zero when the plasma starts to conduct.
> Plasma has a negative resistance - when the current flow increases, the
> voltage drop decreases.
> I am kind of wondering what it is you intend to accomplish here.
> Good Luck!
So any reference to VI curve for a plasma?
Does it also store energy - in that case the V and I would have a time
dependence - is that so?