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Toshiba 15w T8 Noiseless

Came in a desk lamp I bought yesterday. Yeah, it does run quiet.....

SLI_BLB.JPG Simon_BL.JPG Toshiba.JPG CROMPTON18W.JPG Sylvania.JPG
File information
Filename:Toshiba.JPG
Album name:T8 To T10
Manufacturer:Toshiba
Model:FL15S.W/NL
Power Consumption:15w
Overall Width / Diameter:26mm
Overall Length:450mm
Light Colour Temp:4200K
Burn Position :Horizontal
Comments:It's had quite a lot of use and is probably original to the fitting. Never heard of a noiseless tube before.
Date / Code:Probably 1980's
Country Of Origin:Japan
Filesize:73 KiB
Date added:May 06, 2012
Dimensions:1024 x 671 pixels
Displayed:47 times
URL:https://allthingslighting.co.uk/atl/displayimage.php?pid=7578
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Comment 1 to 7 of 7
Page: 1

Tom   [May 06, 2012 at 01:03 PM]
What do they mean by noiseless? A tube that somehow doesn't give off interference? Loving that old Toshiba logo! Caps look the same as most other Jap tubes such as the Sylvania BLBs! Are the pins individually insulated?
Paul   [May 06, 2012 at 01:35 PM]
That is wierd!
Alan_M   [May 06, 2012 at 01:35 PM]
Tom, yeah they are. I don't know what the noiseless bit means either as the only noise a tube normally makes is a pop if it loses vacuum.
Paul   [May 06, 2012 at 01:37 PM]
I have noticed some tubes make a resonating ringing noise, but it's barely audible.
James   [May 07, 2012 at 09:10 PM]
On HF gear some lamps make a noise due to magnetostriction in the base pins or lead wires. Especially in case of nickel plated steel pins this is a problem. The solution is to change to nickel plated brass or even pure brass pins. In metal halide ceramic-capped lamps like G12 this is quite standard practice among the better manufacturers, but I've never seen another fluorescent tube before making such a claim! Would perhaps be interesting to check if the pins are brass coloured or steel.
Alan_M   [May 07, 2012 at 10:57 PM]
Thanks James, I'll check it out. This tube would most likely pre-date HF gear and is run on magnetic switch start.
Callum   [May 04, 2017 at 08:29 PM]
1980s, or possibly early 1990s. Although that logo is listed on Wikipedia commons as being "1950s Toshiba Logo" I remember seeing it on a hard drive out of an old 486 laptop I scrapped, which dated to early 90s. The drive could have been older, but wouldn't have been a lot older.

Comment 1 to 7 of 7
Page: 1

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