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Black light This is my 175w tungsten ballasted GEC MBTW/V black light from 1978. It really lazy and doesn’t like starting. I haven’t ever given it a good long run as Max suggested a while ago, yet. Keywords: Lamps

Black light

This is my 175w tungsten ballasted GEC MBTW/V black light from 1978. It really lazy and doesn’t like starting. I haven’t ever given it a good long run as Max suggested a while ago, yet.

250BL.jpg PH_BL125.jpg bkl1.jpg 20251109_145247.jpg 20251109_145058A.jpg
Lamp/Fixture Information
Manufacturer:GEC
Model Reference:MBTW/V
Lamp
Lamp Type:mercury vapour
Base:es
Electrical
Wattage:175
Voltage:220-250v
Physical/Production
Fabrication Date:Aug 1978 (code KH)
File information
Filename:bkl1.jpg
Album name:Tuopeek / Mercury Vapour
Keywords:Lamps
Filesize:224 KiB
Date added:10 Nov 2025
Dimensions:1752 x 2500 pixels
Displayed:14 times
DateTime Original:2025:11:10 17:44:07
Exposure Time:1/125 sec
FNumber:f/4.2
File Source:Digital Still Camera
Flash:No Flash
Focal length:30 mm
ISO:4500
Model:NIKON D3400
Software:Adobe Photoshop Elements 2.0
White Balance:0
URL:https://trad-lighting.net/gallery/displayimage.php?pid=1046
Favourites:Add to Favourites

Comment 1 to 5 of 5
Page: 1

Ria   [Mon 10 Nov 2025 at 20:56]
I love the old GLS-shaped discharge lamps. I have a couple of 125W blacklight lamps in this shape and also (thanks to Photon) an 80W one, which I never knew existed until I saw it..! Blacklight Mercury Vapour
Tuopeek   [Mon 10 Nov 2025 at 21:08]
Is that an 80w MB type requiring an external ballast? I saw one either 80w or 125w in this form with the 3-pin base in the physics dept of a college I worked at way back. Wish I picked it up. The college, now uni, doesn't even have a physics dept anymore. Sad
Ria   [Tue 11 Nov 2025 at 01:26]
Yes, it's a standard 80W lamp but with Woods glass, just like the 125W one. This is the only 80W one I've ever seen, so I had to persuade Andy to part with it (for cash, of course, he's a brilliant salesman Mr. Green )
Max   [Wed 12 Nov 2025 at 07:25]
Nice picture and nice lamp! I like the use of the blank sheet of paper here, it outlines the shape of the lamp very nicely.
Tuopeek   [Wed 12 Nov 2025 at 18:24]
Well spotted, it is indeed just fluorescence from a sheet of paper in the background to frame the lamp.

Comment 1 to 5 of 5
Page: 1