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Testing a rare white sodium lamp This picture shows the power analyzer in action while running a very rare white sodium lamp, the Philips SDW-AR 35W. This lamp was designed, built and tested in the early 1980s with the intention to achieve significant energy saving in existing incandescent lighting installations by replacing the 100 W silver-crown GLS lamp in its reflector luminaire. Such inefficient lighting system was commonly used in shop windows and retail displays back then because of their glare-free illumination. However, Philips never released the silver-crown version of the SDW because of its too specialized application, and opted to push for new lamps and luminaires instead of going for retrofit solutions. Keywords: Miscellaneous

Testing a rare white sodium lamp


This picture shows the power analyzer in action while running a very rare white sodium lamp, the Philips SDW-AR 35W. This lamp was designed, built and tested in the early 1980s with the intention to achieve significant energy saving in existing incandescent lighting installations by replacing the 100 W silver-crown GLS lamp in its reflector luminaire. Such inefficient lighting system was commonly used in shop windows and retail displays back then because of their glare-free illumination. However, Philips never released the silver-crown version of the SDW because of its too specialized application, and opted to push for new lamps and luminaires instead of going for retrofit solutions.
HMLI500-4_small.jpg Sylvania_35_W_SHP.jpg _IMG8576.jpg _DSC2808m.jpg _DSC2776m.jpg
File information
Filename:_IMG8576.jpg
Album name:Max / Misc lamps and lighting
Keywords:Miscellaneous
Filesize:431 KiB
Date added:Sep 11, 2024
Dimensions:1200 x 800 pixels
Displayed:16 times
DateTime Original:2018:12:02 20:32:03
Exposure Time:1/10 sec
FNumber:f/11
File Source:Digital Still Camera
Flash:No Flash
Focal length:21.6 mm
ISO:200
Model:X-T1
Software:Adobe Photoshop CS5 Windows
White Balance:0
URL:https://trad-lighting.net/gallery/displayimage.php?pid=499
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Comment 1 to 4 of 4
Page: 1

Ria   [Sep 11, 2024 at 06:17 PM]
Very nice, I have a few crown-silver incandescent lamps, but I've never been able to find a suitable fixture for them Sad bulb icon
Max   [Sep 14, 2024 at 08:02 PM]
There should be some old ones available on e-bay, I think. Those were once very popular during the 1970s, 80s and early 90s.
Ria   [Sep 14, 2024 at 11:21 PM]
I saw one on eBay once, they wanted £60 for it and it wasn't in the best of condition. I wasn't prepared to pay that, so I made them an offer of £50 which they refused. So I'm still looking.
Max   [Sep 15, 2024 at 08:14 AM]
Even £50 is too much for such luminaire in my opinion, so better keep looking.

Comment 1 to 4 of 4
Page: 1