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18wx2 linear fluorescent dimmable ballast in action Here it is running in a fitting I cobbled together out of scrap/spares from other fittings. I'm all out of variable resistors it seems so i've just pinched the 10V wires together to trigger the min/max dim cycle. Will make up a proper fitting for it soon.

18wx2 linear fluorescent dimmable ballast in action

Here it is running in a fitting I cobbled together out of scrap/spares from other fittings.
I'm all out of variable resistors it seems so i've just pinched the 10V wires together to trigger the min/max dim cycle.
Will make up a proper fitting for it soon.

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Album name:lasagafield / Lasagafield's Lights
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Date added:23 Jul, 2018
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Comment 1 to 7 of 7
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AngryHorse   [23 Jul, 2018 at 07:31 PM]
That looks very effective Cool, I've also not seen many dimmable fluorescent circuit's first hand.
lasagafield   [24 Jul, 2018 at 11:06 AM]
It's a great thing to see in real life. I'd get one if you can and stick some tubes in it that you don't like very much.
Needless to say the 2700k T12's aren't staying in it. Got some cheap tri 3000k t8's with a fair few hours in it for the time being to see how it effects the tubes.
FrontSideBus   [01 Oct, 2018 at 03:58 PM]
I’d be tempted to have a PIR sensor rigged up so it stays on the dimmest setting until it detects movement and goes to full power.
lasagafield   [01 Oct, 2018 at 05:32 PM]
Nah, used it for about 4 hours and it wrecked my tubes. Mad They were aged and did everything the limited instructions on dimmed fluorescents told me to and my tubes have a thick black band on one side!
Funkybulb   [02 Oct, 2018 at 11:27 AM]
intwresting. the tubes have to have heated cathodes at both ends for this work right. some where around I have some screwball GE rapid start ballast. that have heating transformer and auto transformer-ballast inside one case. one input lead that drives the tubes goes to a flasher controller. this prolly flashed colored fluorescents back in 1950s. what i am saying is as long as tube cathode says warmed you can do all kinds of wacky stuff
FrontSideBus   [02 Oct, 2018 at 04:01 PM]
Must not have proper heating current if it sputtered the electrodes... I bet it was using straight PWM to dim them.
lasagafield   [02 Oct, 2018 at 08:08 PM]
They seem like alright ballasts. I'll have to open one up look inside. They're old so they might have dead caps or something and are not sending proper current to the electrodes.

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