Run CCFL w/ audio sig?

[James King]

I would like to power a fluorescent or CCFL tube with music tracks (at
stepped up voltage) instead of the usual fixed frequency output of
standard inverters.

For this experiment I would use a small 8W flourescent tube or a 370mA
CCFL.

Is it sufficient to apply HVAC audio from a step-up transformer?

How would I deal with the necessity of a higher strike voltage? Or
.... how long would the lamp last if I simply used the strike voltage
for continuous operation?

I only need a few hours operation here to prove a principle.

If there is a more suitable plasma source for this application, I am
open to suggestions.

Maybe something based on a HVDC laser supply.

Thank you,

James

 

[James Meyer]

On Thu, 27 Jan 2005 15:56:29 +1100, James King <jking@robotic.com> wroth:

I would like to power a fluorescent or CCFL tube with music tracks (at
stepped up voltage) instead of the usual fixed frequency output of
standard inverters.

Running the tube supply at a fixed frequency higher than the highest
audio frequency of interest and "closing the loop" around the system by
comparing the audio input to the light output might be the way to go. You
haven't said exactly what you want to achive though.

Jim

 

[Ian Stirling]

James King <jking@robotic.com> wrote:

I would like to power a fluorescent or CCFL tube with music tracks (at
stepped up voltage) instead of the usual fixed frequency output of
standard inverters.

For this experiment I would use a small 8W flourescent tube or a 370mA
CCFL.

You can buy this sort of thing.
I bought a dual 300mm CCFL tube device with audio input, which flashed
in response to music for 4 quid.
(about $7)