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Robertson SP2 ballast
My latest find from an old late 70s cooking range. It may be a replacement since non-Frost/CLF fluorescent ballasts are rather uncommon inside appliances. I didn't find any particular form of date coding on the ballast, so if it's not original it could be a 1990s replacement.

Not tested but ohmeter reads 24 ohms, it's a little low but it sounds OK.
Keywords: Gear

Robertson SP2 ballast

My latest find from an old late 70s cooking range. It may be a replacement since non-Frost/CLF fluorescent ballasts are rather uncommon inside appliances. I didn't find any particular form of date coding on the ballast, so if it's not original it could be a 1990s replacement.

Not tested but ohmeter reads 24 ohms, it's a little low but it sounds OK.

20121104_212352.jpg 20121027_200223.jpg 20120925_124612.jpg 20120921_154610.jpg 20120921_152444.jpg
File information
Filename:20120925_124612.jpg
Album name:Vince / All my ballasts
Keywords:Gear
Company and Date Manufactured:Robertson Transformer Company of Blue Island, Ill. | Probably 1990s
Model Number:SP2
Wattage:14-15-20-22W
Lamp Type:Fluorescent
Filesize:532 KiB
Date added:Oct 07, 2012
Dimensions:2048 x 1536 pixels
Displayed:182 times
Color Space:sRGB
DateTime Original:2012:09:25 12:46:11
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Aperture Priority
Exposure Time:1/267 sec
FNumber:f/2.65
Flash:No Flash
Focal length:4.03 mm
ISO:32
Make:Samsung
Max Aperture:f/2.6
Model:SGH-T989D
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=13328
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