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Both my Courtney Pope 8ft twin fixtures working! Finally got both of these working. The right one with a pair of Philips 80w T5 HF ballasts to run 85w tubes, and the left is now 125w SRS courtesy of a pair of BNOS Parmar ballasts I got from eBay. Still a few issues to sort; on the HF one, one of the Rock lamp holders isn't making good contact and has burnt up a little and the 80w T5 HF ballasts seem to over-drive the 85w tubes somewhat too. Putting them on the power meter reveals about 100w being drawn from the supply for each tube. With a T5 tube fitted, about 83 watts is drawn at full brightness. For the 125w SRS one I need a pair of 7.8uF capacitors, I've fitted some 8uF for now but the tubes are being over-driven a bit.

Both my Courtney Pope 8ft twin fixtures working!


Finally got both of these working. The right one with a pair of Philips 80w T5 HF ballasts to run 85w tubes, and the left is now 125w SRS courtesy of a pair of BNOS Parmar ballasts I got from eBay.

Still a few issues to sort; on the HF one, one of the Rock lamp holders isn't making good contact and has burnt up a little and the 80w T5 HF ballasts seem to over-drive the 85w tubes somewhat too. Putting them on the power meter reveals about 100w being drawn from the supply for each tube. With a T5 tube fitted, about 83 watts is drawn at full brightness. For the 125w SRS one I need a pair of 7.8uF capacitors, I've fitted some 8uF for now but the tubes are being over-driven a bit.

20180424_182325-1.jpg 20180422_083638.jpg IMG_1356.JPG 20180423_140718.jpg Capture2B_2018-04-20-13-14-53-1.png
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Filename:IMG_1356.JPG
Album name:fluorescent / Fittings
Filesize:3032 KiB
Date added:23 Apr, 2018
Dimensions:3072 x 2048 pixels
Displayed:622 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=8044
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Comment 1 to 5 of 5
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Andy   [23 Apr, 2018 at 07:24 PM]
Very nice! Interesting that the HF ballasts draw about 100w running the 85w T12 tubes.
Kev   [23 Apr, 2018 at 07:44 PM]
Lol that’s going to pop those HF ballasts even quicker id give the magnetic ones another try!
Danny   [23 Apr, 2018 at 07:47 PM]
The hf we used at the last meet to run 85s seemed to under run them I thought
fluorescent   [23 Apr, 2018 at 10:40 PM]
99% sure my power meter is correct, it's usually pretty accurate. The tubes do look very bright & the ballast buzzes a little. Not sure what I'm going to do with it yet, might try a different type of HF ballast, or I might just switch start the fucker and use 100/125w tubes!
Simon_R   [24 Apr, 2018 at 10:58 AM]
Always good to see 8 footers saved Smile

Comment 1 to 5 of 5
Page: 1

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