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Sylvania GTE single lamp F40T12 fixture wih side-mounted sockets. Here's an unusual find from the huge recycle centre's scrap metal heap! I don't even remember how I got it LOL. Keywords: Indoor_Fixtures

Sylvania GTE single lamp F40T12 fixture wih side-mounted sockets.

Here's an unusual find from the huge recycle centre's scrap metal heap! I don't even remember how I got it LOL.

PreheatFluo_Toshiba_lightbox.jpg 20120904_153828.jpg 20120904_153651.jpg Peerless1XF40Fixtures.jpg 100_1151.JPG
File information
Filename:20120904_153651.jpg
Album name:Vince / Misc fixtures
Keywords:Indoor_Fixtures
Company and Date Manufactured:Sylvania GTE | 1993
Wattage:48W
Lamp Type:Fluorescent
Filesize:301 KiB
Date added:Sep 04, 2012
Dimensions:2048 x 1536 pixels
Displayed:79 times
Color Space:sRGB
DateTime Original:2012:09:04 15:36:51
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Aperture Priority
Exposure Time:1/15 sec
FNumber:f/2.65
Flash:No Flash
Focal length:4.03 mm
ISO:64
Make:Samsung
Max Aperture:f/2.6
Model:SGH-T989D
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=12907
Favorites:Add to Favorites

Comment 1 to 6 of 6
Page: 1

streetlight98   [Sep 04, 2012 at 08:41 PM]
Nice! Why is it 48W? Neutral Ballast losses?
TiCoune66   [Sep 04, 2012 at 09:05 PM]
Yup, there's 8W of ballast losses (not including the reactive power).
streetlight98   [Sep 04, 2012 at 09:27 PM]
Is that true for F40 preheat ballasts too?
joe_347V   [Sep 05, 2012 at 02:02 AM]
Yep, the ballast loses a few watts, the wasted power is wasted in the form of heat, sound, and vibrations.
streetlight98   [Sep 05, 2012 at 02:06 AM]
So as the ballast ages, will it have more and more losses to due greater vibration if the coils loosen up a bit over time?
joe_347V   [Sep 05, 2012 at 02:09 AM]
I think the loss should stay the same but it gets noisier because the tar potting which muffles the sound hardens and dosen't work as well.

Comment 1 to 6 of 6
Page: 1
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