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Ballast question

S

siliconmike

Jan 1, 1970
0
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.

Regards,
Mike
 
R

Rich Grise

Jan 1, 1970
0
[crossposted: sci.electronics.design,sci.electronics.basics
followups-to: sci.electronics.basics]

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!
RIch
 
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