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fluorescent ballast in europe


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#1 dinko

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Posted 03 December 2005 - 09:52 PM

Does anyone know a ballast one could use to power a single kino tube 4ft long.
It would be used on film, so flicker free ability would be great.
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#2 Phil Rhodes

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Posted 04 December 2005 - 07:45 AM

Hi,

There's dozens of types. Just ask for one that's high frequency - they're common as anything.

Phil
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#3 dinko

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Posted 05 December 2005 - 07:12 AM

Hi,

There's dozens of types. Just ask for one that's high frequency - they're common as anything.

Phil



Phil, thank you for posting.

I was looking for more practical answer, if you say dozen please state which ones and the ones you used.
If there is a problem with advertising in this site than feel free to mail me the answer.

thanks
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#4 Dimitrios Koukas

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Posted 05 December 2005 - 10:24 AM

Hello,
Just look for digital ballasts, most of the consumer lighting companies make them.
You can dim them too.Down to 0%.
Dimitrios Koukas
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#5 Phil Rhodes

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Posted 05 December 2005 - 10:50 AM

Hi,

I used Sylvania's Quicktronic range, type number QTP236, suitable for running two 36W tubes. I have confirmed using test instruments that the output is at about 50KHz, meaning they should be safe at all sane film speeds, but I haven't actually shot film with them.

The QTP-Dim range is dimmable using 0-10V control (I think - there are certainly ranges available that are). You could fudge up a controller with a few resistors and a wall-wart power supply, or use a DMX decoder to run them from a conventional lighting desk. Dimmable ballasts are considerably more expensive, and be aware that dimmability does not imply high frequency.

Phil
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