Remote Living > Lighting

Testing BT's home-made fluoro circuit

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BT Humble:
I decided that it was time to do a burn-in test on my home-made 15W fluoro:

...so I've hooked it up to a small 12V system and switched it on.  As of this morning it was using 850mA (I tweaked it a little since the above photo was taken, to make it a little brighter), and had been running for 65 hours without any issues.  It's a little brighter at one end of the tube than the other, but I think that's just due to the way the circuit works.
Here's the construction article:
http://www.fieldlines.com/story/2005/1/31/234116/315
BTH

BT Humble:
Up to 85 hours now, and all is well.
BTH

RobC:
Looks like it will work just fine. I stopped worrying about my setup at 75 hours. Mine by the way can be adjusted from a dim setting to the full output 50 to 75 watts depending on what you want. And you know what, it never would have happened without your starting the thread many thanks. RobC

RobC:
Make that 20 to 75 watts.RobC

BT Humble:


Looks like it will work just fine. I stopped worrying about my setup at 75 hours. Mine by the way can be adjusted from a dim setting to the full output 50 to 75 watts depending on what you want. And you know what, it never would have happened without your starting the thread many thanks. RobC


I've bought a few 555 chips to try out your circuit too, hopefully some of these zillions of ferrite transformers I've extracted from old computer PSUs will have windings that will work unmodified.  It seems a shame to dump them, and they're almost impossible to disassemble for rewinding.
I think I've worked out a method for a brightness adjustment for mine too, although it sort of defeats the whole idea behind it (low parts count (of recycled components), simple, cheap).
BTH

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