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General Electric Red Green and Blue 11W Biax PL-S Compact fluorescent lamps after Danny found some of these a couple years ago I was quite fascinated by them, so am very happy to have recently found a full set of them myself :) I really do wonder what their story is, colour PL-S is unusual as it is but they also have the less common 4 pin PL-S base (which is normally only used on lamps intended for control gear where a normal switch start PL-S lamp would be incompatible, like HF gear or EM lighting or low voltage DC ballasts) since they came in plain white boxes, clearly the normal type used by GE for their PL-S lamps but just all white, and given their unusual spec I have a feeling these where made for a specific application or customer

General Electric Red Green and Blue 11W Biax PL-S Compact fluorescent lamps

after Danny found some of these a couple years ago I was quite fascinated by them, so am very happy to have recently found a full set of them myself :)

I really do wonder what their story is, colour PL-S is unusual as it is but they also have the less common 4 pin PL-S base (which is normally only used on lamps intended for control gear where a normal switch start PL-S lamp would be incompatible, like HF gear or EM lighting or low voltage DC ballasts)

since they came in plain white boxes, clearly the normal type used by GE for their PL-S lamps but just all white, and given their unusual spec I have a feeling these where made for a specific application or customer

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File information
Filename:Image_from_iOS_281929.jpg
Album name:Lightbulbfun / My Lamps
Manufacturer:General electric
Wattage:11W
Filesize:2790 KiB
Date added:07 Jan, 2021
Dimensions:2730 x 2048 pixels
Displayed:34 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=15362
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Comment 1 to 6 of 6
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Oliver   [07 Jan, 2021 at 03:01 PM]
Could be for something like an arcade machine sign, vending machine sign backlight.
Andy   [07 Jan, 2021 at 08:32 PM]
Very nice! I managed to get a set of these a couple of years back but have yet to get hold of the correct lampholder for them. The larger type is more common.
Slyspark   [07 Jan, 2021 at 09:13 PM]
Certainly unusual, but very nice!
BC5-80   [04 Mar, 2021 at 04:57 PM]
They might have been intended for RGB dimming + colour mixing via dimmable electronic ballasts. Still, I'm surprised at the low power rating. That technique would normally have been applied to higher power, linear T5 tubes.
Lightbulbfun   [07 Mar, 2021 at 06:50 PM]
ah thats not a bad shout, perhaps it was for a specifically smaller version of those system for where you dont want such a high power rating (it would certainly explain the 4 pin bases!)
FrontSideBus   [09 Mar, 2021 at 10:02 PM]
Most likely 4 pin so they can simply be turned on and off as part of a display or something with an electronic ballast. A switching display would look shit with 2 pin lamps flickering to life!

Comment 1 to 6 of 6
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