Author Topic: Old Mercury Vapour Lamp With Unusual Outer Bulb Shape  (Read 1268 times)
108CAM
Member
*****
Offline

Gender: Male
View Posts
View Gallery

Diehard MV, HPS, SOX & Preheat Fluorescent Fanatic


UCG6Xojn8dNgDuN9J7_Gnj8w
Old Mercury Vapour Lamp With Unusual Outer Bulb Shape « on: October 19, 2022, 03:58:23 AM » Author: 108CAM
I have this Toshiba 250w MV lamp that's the shape of a BT37 but is the size of a BT28.
Does anyone know the actual designation for this rather unusual bulb shape or is it just a glorified BT28 with a rounded bulge and long neck?
Logged

Fluro starter pings combined with a 50hz ballast hum and blinking tubes is music to my ears.

Rest in Peace Electronic Lamp Manufacturers of Australia
1925-2002

Bring back the AJF Zodiacs!

Total incidents since joining LG: 17
Lamps accidently broken or smashed: 14
Ballast explosions/burnouts: 3

joseph_125
Member
*****
Offline

Gender: Male
View Posts
View Gallery


GoL
Re: Old Mercury Vapour Lamp With Unusual Outer Bulb Shape « Reply #1 on: October 29, 2022, 04:05:52 PM » Author: joseph_125
From what I know, most lamp manufacturers just merely called them BT28 even though the bulge is more rounded and more like that of a BT37 than a traditional BT-28.

EYE/Iwasaki 175w and 250w BT28 lamps seemed to use a similar shape too along with the older Abco-Westinghouse branded 175w MV lamps. Abco-Westinghouse later switched to a more traditional BT-28 envelope.
Logged
Print 
© 2005-2024 Lighting-Gallery.net | SMF 2.0.19 | SMF © 2021, Simple Machines | Terms and Policies