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Philips SDW "White SON" LV I finally got myself one of these obscure things. This is a low voltage (55 volt arc tube) version of the European Philips SDW White Son high pressure sodium lamps in a medium based E21 format that was aimed for the US market. Even so, these lamps did not become very popular here in the US. It requires an ANSI S-105 hybrid magnetic/electronic ballast to operated correctly. I've tried it on a regular S-54 100 watt high pressure sodium ballast and it works but lights up the usual HPS orange instead of the incandescent-like white color it is supposed to be. Keywords: Lamps

Philips SDW "White SON" LV

I finally got myself one of these obscure things. This is a low voltage (55 volt arc tube) version of the European Philips SDW White Son high pressure sodium lamps in a medium based E21 format that was aimed for the US market. Even so, these lamps did not become very popular here in the US.

It requires an ANSI S-105 hybrid magnetic/electronic ballast to operated correctly. I've tried it on a regular S-54 100 watt high pressure sodium ballast and it works but lights up the usual HPS orange instead of the incandescent-like white color it is supposed to be.

CAM00298.jpg CAM00231.jpg IMG_4132.JPG SylPB3.JPG SylPB2.JPG
File information
Filename:CAM00298.jpg
Album name:yuandrew / High Intensity Discharge
Keywords:Lamps
Company and Date Manufactured:Philips
Model Number:SDW-100/LV/D
Wattage:100
Lamp Type:White High Pressure Sodium
Filesize:52 KiB
Date added:May 22, 2015
Dimensions:800 x 600 pixels
Displayed:143 times
Color Space:sRGB
DateTime Original:2015:01:19 11:27:07
Exposure Bias:0 EV
Exposure Time:1/29 sec
FNumber:f/2.4
Flash:No Flash
Focal length:3.49 mm
ISO:200
Make:Lg Electronics
Model:LG-P659
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=19363
Favorites:Add to Favorites

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merc   [May 22, 2015 at 06:31 AM]
I haven't seen them too much used here either, probably because of that special ballast required...?
MASTER CityWhite CDO-TT CMH lamps are definitely an easier way to change streets from "orange" to "warm white" as they run on a regular HPS gear.

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