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Krypton lamp

Krypton lamp

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Found this in a 2 pack for 3 euros literally this afternoon during a lunch break at school when I went to nearby store to get some sandwiches. Could not believe my eyes, I didn't know that krypton lamps with this old mushroom shape would be made to this day, unless this was something that was made 10 years ago and they just found them in an abandoned box from 10 years old and decided to upgrade the buy code and sold it as new product? Stores sometimes does that. They are 220 volts 40 watt

IMG_20181029_203417.jpg IMG_20181026_175011.jpg IMG_20181026_174745.jpg IMG_20181024_201607.jpg

Light Information

Light Information

Manufacturer:Clartech
Model Reference:Krypton lamp
Lamp
Lamp Type:Incandescent
Filament/Radiator Type:double coil
Base:e27
Shape/Finish:Mushroom
Service Life:approx 10k hours
Electrical
Wattage:40w
Voltage:220v
Optical
Color Temperature:2700k
Physical/Production
Assembly Line:Somewhere between 2000 - this day

File information

File information

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Filename:IMG_20181026_174745.jpg
Album name:vytautas_lamps / GLS and other misc. stuff
Keywords:Lamps
File Size:353 KB
Date added:Oct 26, 2018
Dimensions:1848 x 2464 pixels
Displayed:94 times
Date Time:2018:10:26 17:47:47
DateTime Original:2018:10:26 17:47:47
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Exposure Time:30002/1000000 sec
FNumber:f 1.8
Flash:Flash
Focal length:3.5 mm
ISO:102
Make:Blackview
Model:BV6000S
Software:MediaTek Camera Application
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Comments
rjluna2
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Robert


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Oct 26, 2018 at 11:04 AM Author: rjluna2
Looks like Philips based to me

Pretty, please no more Chinese failure.

fluorescent lover 40
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Lights are awesome! :)


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Oct 26, 2018 at 11:27 AM Author: fluorescent lover 40
January 2009.

Power provider: Southern California Edison (SCE)

-Date decoder of some US lamps 1960-present.
-Switch and receptacle collector.
-I'll save any vintage lamp! Smiley

merc
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Adam


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Oct 26, 2018 at 12:15 PM Author: merc
Are you sure it's krypton filled? See James' comment here.
I'm also confused by the 10k hour lamp life. Isn't that too much? (I don't say it's not possible but I'm a little surprised.)

Not a misoLEDist...

vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Oct 26, 2018 at 12:19 PM Author: vytautas_lamps
No, I actually always fill in the longevity space with "approx 10k hours" because all lamps usually last that long with spare use, or if it is untouched during it's use, like in a ceiling fixture. Soviet lamps easily even surpassed this life expectancy, like the original lamps in my grandmom's living room, that were installed back in 1982 and still works to this day, tho the filaments in all 5 lamps are quiet sagged. Of course modern incandescent don't last this long, but as a general rule, incandescent lamps SHOULD last that long.

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 ;

merc
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Adam


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Nov 01, 2018 at 02:25 PM Author: merc
Standard incandescent lamp life was set to 1,000 hours many decades ago as a trade off between the lamp life and its efficacy within the price range. Without that lifespan limit, also manufactures could get into real problems as there would be only a very little demand for new light bulbs.
Lamps for hardly accessible places used to be rated to 5,000 hours.

If the Soviet lamps lasted 10,000 hours (which is quite hard to believe in), they must have been rather underdriven hence of a low efficacy.

Not a misoLEDist...

vytautas_lamps
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My idol is Mylene Farmer, deal with it.


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Nov 02, 2018 at 03:21 AM Author: vytautas_lamps
The one 100 watt lamp in mu grandma's village sat in the fixture on the farmhouse for 30 years, it was never replaced trough that period, and still works to this day (It is in my collection now)

My uncle and aunt live in a house. They live there for 50 years now. They have soviet 5x100w ceiling lights with glass shades. In the living room, since the installation, the opaque mushroom RESR made 100 watt lamps are still in use from the day they were installed. Only one of the 5 were replaced 2 years ago, other still work but has really sagged filaments. In the bedroom, from five original candle shaped RESR made 60 watt lamps three are now replaced by new ones, but two are still working from the original installation.

My grandpa live in a soviet apartment and has a masterbedroom and a small living corner in the living room for when I come over to their place to stay a few days in summer. The livingroom bedlights still have original mini candle shaped 40 watt soviet lamps, that were installed when my mom was born in 1974.

I think that is enough examples of soviet lamps surpassing any life expectancy. So moral of the story: if the lamp is installed perfectly upright and is never moved, I mean never touched and never bumped accidentally, the fillament last a LOT longer than what it should last.

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 ;

merc
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Adam


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Nov 02, 2018 at 04:11 PM Author: merc
As I said before, if the Soviet lamps really last like this (and I believe you), they must be underdriven (lower filament temperature) and give off less lumens/W than lamps with a standard 1k hour lifespan.
I've got personal experience with incandescents used in Eastern Bloc (it fell apart when I was 14) and some lamps like Romanian Romlux or Polish Polamp were infamous for their very short lifespan and frequent explosions. (Also our Tesla lamps weren't always the best quality ones.)

Back to this uploaded lamp: This isn't an old Soviet lamp but possibly a Chinese one and I really don't believe in 10k hours here.
I understand you like old lighting but the "approx 10k hours" because all lamps usually last that long with spare use, or if it is untouched during it's use, like in a ceiling fixture" simply isn't truth. Sorry.

Not a misoLEDist...

Cal
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Bottled lightning


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Nov 02, 2018 at 04:21 PM Author: Cal
It wouldn't surprise me, if the OP is really reporting such long lifetimes with incandescent lamps, that perhaps some of these old soviet lamps had actually slightly higher than line voltage rated filaments, and perhaps a lower than usual line voltage due to err, supply issues. Thereby creating a situation where the lamps appeared to be of unusually high quality. Does that make me an "ist" for assuming these things?
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