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End profile of 100 watt halide ballasts Beta5 is indeed right, most of these Thorn/Atlas ballasts are open spaces!, the GF range are like just a laminated core with two plates welded to them.

End profile of 100 watt halide ballasts

Beta5 is indeed right, most of these Thorn/Atlas ballasts are open spaces!, the GF range are like just a laminated core with two plates welded to them.

IMG_4385.jpeg IMG_4354.jpeg IMG_4330.jpeg IMG_4326.jpeg IMG_4320.jpeg
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Filename:IMG_4354.jpeg
Album name:AngryHorse / Control gear
Filesize:3645 KiB
Date added:08 May, 2026
Dimensions:2730 x 2048 pixels
Displayed:85 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=24893
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Beta 5   [08 May, 2026 at 10:15 PM]
Seen this a few times with various ballasts, essentially the same sized cores just in different casings! With the sheet metal cased ballasts it is presumably cheaper to just use the same cases and crimp them further up for the smaller lamination stacks. The extra metal may also give it a bit more heat sinking?
AngryHorse   [09 May, 2026 at 09:01 AM]
I like the older Thorn design though, it’s able to create good air flow around the coils than any other ballast design Cool

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