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Mystery ;) It looks like a soft-white incandescent lamp but this is definitely not one. So, what is it then exactly? Keywords: Lamps

Mystery ;)


It looks like a soft-white incandescent lamp but this is definitely not one. So, what is it then exactly?
Philips_S-HPV_20W_28Kr-O229.jpg Philips_PLE23-CPro.jpg Mystery.JPG UHP50_m.jpg IMG_7807s.jpg
File information
Filename:Mystery.JPG
Album name:Max / Misc lamps and lighting
Keywords:Lamps
Filesize:460 KiB
Date added:Mar 10, 2025
Dimensions:800 x 1200 pixels
Displayed:26 times
DateTime Original:2022:10:03 20:12:16
Exposure Time:1/3800 sec
FNumber:f/0
File Source:Digital Still Camera
Flash:No Flash
Focal length:35 mm
ISO:200
Model:X-T1
Software:Adobe Photoshop CS5 Windows
URL:https://trad-lighting.net/gallery/displayimage.php?pid=706
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Comment 1 to 8 of 8
Page: 1

Ria   [Mar 11, 2025 at 01:23 PM]
Looks as if it could be a GE 160W EZ-Merc self ballasted lamp, but not sure. If not that then maybe a GE 100W mercury lamp of some description..? Ok, you got me, what is it..? Laughing
Tuopeek   [Mar 11, 2025 at 04:57 PM]
It does have a very soft warm tone but wonder if I can see a start resistor of a mercury lamp hanging down.
Max   [Mar 12, 2025 at 04:06 AM]
So, it is a 100 W mercury lamp indeed (not self ballasted), but not from GE. Any idea about the make and type exactly? Not many mercs were capable of such nice warm white light Wink
Bulbman256   [Mar 14, 2025 at 01:34 AM]
Westinghouse A23 100w /n lamp? Wonder
Max   [Mar 15, 2025 at 11:46 AM]
Exactly, it's a 100 W Westinghouse Styletone, the most elaborate warm-white mercury lamp ever made! It has three materials deposited onto its bulb: yttrium phosphovanadate and magnesium fluorogermanate phosphors, the latter acting also as a blue-light filter, and silica nanoparticulates as a precoat, working as a short-wavelength optical reflector.

The resulting light color is truly excellent, you wouldn't know that this is a mercury lamp, but the lumen output is a bit on the low side however (3600 lm, initial) - still much higher than that of a softone 100 W incandescent lamp though (1300-1700 lm).
BT25   [Mar 16, 2025 at 05:56 PM]
I knew what this was as soon as I saw it! Very Happy
Max   [Mar 16, 2025 at 07:05 PM]
Especially since this came from you Wink
Ria   [Mar 16, 2025 at 10:53 PM]
Ah, thinking about it, I did realise it might be one of those, I think we had one from you as well, Eric..? The brain cell is a bit hazy right now, still getting over Sammi being in hospital Crying or Very sad

Edit 28/03/25 - Found a photo of the one we have, see here) Mercury Vapour Lamp

Comment 1 to 8 of 8
Page: 1