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2007 Russian "SVET" F40T10 DL Fluorescent tube (Click on image to enlarge for detailed look)

2007 Russian "SVET" F40T10 DL Fluorescent tube (Click on image to enlarge for detailed look)

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This is a tube that I got when I was 11 years old. For some reason I just now got to it and made a presentation on it. It is one of the very first fluorescent tubes I ever got actually. I got it from (if I remember correctly) from the electrical store that was near my old place that I used to live in 4 years ago. I asked if they had any spare old lamps to give for me for free because I had a collection, and after many uncomfortable stares and akward silences They went to check and they brought two tubes, this one and one NOS 1995 Pila (Polish made Philips alternative) DL F40T12. This tube is used, but still has it's cathodes intact and has some moderate life hours left in it. It is Unusual F40T10 DL fluorescent tube, made by a soviet-and still existing lamp manufacturing company SVET (witch in English svet means light) amazingly it has a T10 sized Tungsram endcaps. I have a full collection of those :D I have a T12, T10 and T8 Tungrsram T12 encap alternatives. Being Russian made in 2007 this tube is moderately bright, but it has a defect. If you look at the whole tube pics, you will see that the tube is not as bright in the middle as near the cathodes. There is two pics - the upper one shows the tube, cold start after 4 years pf non-use and the botom one is after the tube running for 10 mins after photoshoot. You can see it doesn't want to get bright in the middle. And the arc is not wavy as you would expect - It is not mercury starvation! It is some different defect in the gas blend probably. I don't know. Maybe some of you can explain what the hell is going on here :)

Philips TLD f36t8 54_765.jpg Brandless soviet f40t12 with anode extensions.jpg 2007 SVET f40t10.jpg IMG_20190211_162553.jpg

Light Information

Light Information

Manufacturer:SVET
Model Reference:LD-40
Lamp
Lamp Type:Fluorescent
Filament/Radiator Type:double coil
Base:G13 bipin
Shape/Finish:Tube
Service Life:approx 20k hours
Electrical
Wattage:40w
Voltage:220v
Optical
Lumen Output:Moderate
Lumen Efficacy:Moderate
Color Temperature:7500k
Color Rendering Index:Not bad but not good
Physical/Production
Factory Location:Russia, probably Smolensk
Fabrication Date:2007, first quarter
Application/Use:For outdoor/indoor lighting

File information

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Filename:2007 SVET f40t10.jpg
Album name:vytautas_lamps / fluorescent tubes T8/T12
Keywords:Lamps
File Size:285 KB
Date added:Feb 12, 2019
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Date Time:2019:02:12 22:36:38
DateTime Original:2019:02:12 21:14:10
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Jovan
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Feb 16, 2019 at 07:08 AM Author: Jovan
I have same starter from SVET.They were called OLO SVET.Starter is awesome quality.
vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Feb 16, 2019 at 11:33 AM Author: vytautas_lamps

I have same starter from SVET.They were called OLO SVET.Starter is awesome quality.

Does it have a metal casing? Or a plastic one?

New lighting technologies is a pity fest everywhere you look. From LEDs that last only for two months, to a never-ending global starvation of t8 fluorescent tubes.
We shall reinforce ourselves with good old full mercury t12s and HIDs made to surpass one's life, and give them all the middle finger ;

Jovan
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Feb 16, 2019 at 12:13 PM Author: Jovan

Does it have a metal casing? Or a plastic one?

Starter is metal cased.Try to run tube for long time about 10h.Do you still have this tube.
vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Feb 17, 2019 at 02:27 AM Author: vytautas_lamps

Starter is metal cased.Try to run tube for long time about 10h.Do you still have this tube.

Yes of course I have it, it was my very first fluorescent tube after all. I have it in my collection for 10 years now. I will try to install in my kitchen light, during evenings it runs practically for 4 hours straight, it is the main light there. I will see if it gets bright in the middle or not.

New lighting technologies is a pity fest everywhere you look. From LEDs that last only for two months, to a never-ending global starvation of t8 fluorescent tubes.
We shall reinforce ourselves with good old full mercury t12s and HIDs made to surpass one's life, and give them all the middle finger ;

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