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Mazda 250W ME/D Lamp Here is an interesting lamp, it is a Mazda 250W ME/D lamp, the /D suffix indicating it is to be run base down. It was developed as a short arc projector lamp and was popular for monochrome slide and film projectors, amongst other applications. The electrodes are of solid tungsten and the lamp has an operating pressure of 30 atmospheres..! The base is identical to the BS546 5A plug, once a very common fixture in UK properties. I am assuming the date of manufacture is 1969, as this date is scratched by hand on the base, presumably the date of installation. The arc tube is very black, so it's most likely had a lot of use, but it clears almost immediately when the lamp is lit. Photos of that to follow. Keywords: Lamps

Mazda 250W ME/D Lamp


Here is an interesting lamp, it is a Mazda 250W ME/D lamp, the /D suffix indicating it is to be run base down. It was developed as a short arc projector lamp and was popular for monochrome slide and film projectors, amongst other applications. The electrodes are of solid tungsten and the lamp has an operating pressure of 30 atmospheres..! The base is identical to the BS546 5A plug, once a very common fixture in UK properties. I am assuming the date of manufacture is 1969, as this date is scratched by hand on the base, presumably the date of installation. The arc tube is very black, so it's most likely had a lot of use, but it clears almost immediately when the lamp is lit. Photos of that to follow.

Osram-GEC_80W_MB-D_Lamp.jpg Mazda_250W_ME-D_Lamp_lit-a.jpg Mazda_250W_ME-D_Lamp.jpg Siemens-Ediswan_240V_500W_MAT-V_Lamp_Lit.jpg Siemens-Ediswan_240V_500W_MAT-V_Lamp.jpg
Lamp/Fixture Information
Manufacturer:Mazda (Associated Electrical Industries Ltd.)
Model Reference:Lamp 94-0051
Lamp
Lamp Type:Very high pressure mercury vapour
Filament/Radiator Type:Quartz arc tube
Base:5A BS546 plug
Shape/Finish:T50
Service Life:500 hours
Burning Position:Vertical, base down
Electrical
Wattage:250
Voltage:60/75
Current:3.7/4.6A
Physical/Production
Factory Location:Leicester
Fabrication Date:September 1969 (Date code 45)
Application/Use:Projection
File information
Filename:Mazda_250W_ME-D_Lamp.jpg
Album name:Ria / Mercury Lamps
Keywords:Lamps
Filesize:369 KiB
Date added:12 May 2025
Dimensions:2154 x 1345 pixels
Displayed:9 times
URL:https://trad-lighting.net/gallery/displayimage.php?pid=841
Favourites:Add to Favourites

Comment 1 to 7 of 7
Page: 1

Sammi   [Mon 12 May 2025 at 15:37]
It was quite a fiddly little blighter to light though..! Mind Blown
Ria   [Mon 12 May 2025 at 16:47]
Yes it was, the normal 250W MV ballast didn't have enough 'oomph' so we had to use a MH one with an ignitor Shocked
Max   [Mon 12 May 2025 at 21:33]
Nice addition! Looks like you had a very productive trip. Any other gems coming up?
Ria   [Mon 12 May 2025 at 21:51]
One or two, watch this space Bulb Man
AgentHalogen_87   [Tue 13 May 2025 at 22:21]
Strange contraption Wonder
Ria   [Tue 13 May 2025 at 22:35]
It is, isn't it Laughing
wide-lite 1000   [Sat 17 May 2025 at 02:11]
Interesting little lamp !

Comment 1 to 7 of 7
Page: 1