Thanks you Sylvaina for introducing this imperfection.

Well I am kinda gutted as i have Sylvania D30 8 footer 60
Watt supersaver single pin slimeline lamp. Being early triphosphor
And krypton-argon filled lamp. As this instant start lamp at reduce power
By dropping arc voltage and lamp current is 460 mA. This one problem
Why Thorn have this imperfection as well as it was made on GTE sylvania lamp
Machinery.

File information
Filename:	70BEBD15-D8F0-4E43-962E-6EFF18A623EF.jpeg
Album name:	Funkybulb / American Fluorescent tubes
Manufacturer:	Sylvania
Type/Model:	F96T12/D30/SS
Wattage:	60 watts
Date manufactured:	In 1980s
Filesize:	2583 KiB
Date added:	02 May, 2018
Dimensions:	2730 x 2048 pixels
Displayed:	548 times
URL:	http://80.229.24.59:9232/gallery/displayimage.php?pid=8106
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Comment 1 to 4 of 4

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Slyspark

[02 May, 2018 at 05:56 PM]

Now that's interesting, given Thorn and Sylvania shared the same horizontal lamp production technology. Looks like there's a link between that and why the ends on some Thorn tubes 'ring off' for no obvious reason!

AngryHorse

[03 May, 2018 at 06:04 AM]

I`m guessing ring off is rare with US tubes then?

Funkybulb

[03 May, 2018 at 12:06 PM]

There still ring offs but dont seem as common, I see this more on canada sylvania tubes.

XmasLightGuy

[03 May, 2018 at 11:44 PM]

Classic example of a ring-off!
Haven't had it happen to any Sylvania's, but I have lost a few GE's in this way.

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Not a fan of 60w slimlines, but this one is cool because its 3000kK

Comment 1 to 4 of 4

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