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(Pictures taken from internet, all copyright grounds belong to @Nazar from ixbt.ru) PZGRL F36T8 tube with weird absence of phosphor around one cathode

(Pictures taken from internet, all copyright grounds belong to @Nazar from ixbt.ru) PZGRL F36T8 tube with weird absence of phosphor around one cathode

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Nice tube! I wish I could have it. This is soviet made F36T8 tube. Made in Ukraine, Poltava by PZGRL manufacturer. You can guess it by crappy cheap single coil filament.

IMG_20190313_191917.jpg Hairline crack Tungsram NOS cw f40t12.jpg Poltava LDC-36 clear end.jpg Soviet F36T8 CW with crapload of mercury.jpg

Light Information

Light Information

Manufacturer:PZGRL Poltava gas discharge lamp manufacturing plant in Ukraine
Model Reference:LDC-36
Electrical
Wattage:36W
Voltage:220v
Optical
Lumen Output:Bad cause of thick phosphor coating
Lumen Efficacy:Bad because grainy and uneven phosphor
Color Temperature:5500k
Color Rendering Index:Could be better
Physical/Production
Factory Location:Poltava, Ukraine
Fabrication Date:1970s - 1990s
Application/Use:For outdoor/indoor lighting

File information

File information

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Filename:Poltava LDC-36 clear end.jpg
Album name:vytautas_lamps / fluorescent tubes T8/T12
Keywords:Lamps
File Size:216 KB
Date added:Mar 12, 2019
Dimensions:2464 x 1441 pixels
Displayed:79 times
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Silverliner
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Verd a ray classic.


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Mar 13, 2019 at 01:44 AM Author: Silverliner
Is this a demonstration tube? Showing the innards and how it works. No cathode guards in the Soviet T8s?

May all the great lighting technologies have their place in history.

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vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Mar 13, 2019 at 01:48 AM Author: vytautas_lamps

Is this a demonstration tube? Showing the innards and how it works. No cathode guards in the Soviet T8s?

No, soviet tubes never had cathode guards. And this is not a demonstraction tube, it is just a tube with a defect during manufacturing.

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 ;

Silverliner
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Verd a ray classic.


GoL
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Mar 13, 2019 at 01:51 AM Author: Silverliner
Do Soviet T8 tubes blacken badly at the ends?

May all the great lighting technologies have their place in history.

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vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Mar 13, 2019 at 04:29 AM Author: vytautas_lamps

Do Soviet T8 tubes blacken badly at the ends?

Yes, the blackening is really bad in soviet tubes. Because they used cheap unrefined metal wire for filament support, and because phosphor was very bad and full of imputities the sputtering was really siginicant. Dead soviet tubes tend to very, very badly blacken.

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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