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Living-room HID uplighter v.4 - under the hood My 4th-gen living-room HID uplighter has four discharge lamps, which requires some serious electronics to drive all that. Because of the high voltage required to ignite the lamps (2 to 5 kV) I've placed the ballast units as close as possible to the luminaire, and here's how it looks like with removed covers. Keywords: Lanterns

Living-room HID uplighter v.4 - under the hood


My 4th-gen living-room HID uplighter has four discharge lamps, which requires some serious electronics to drive all that. Because of the high voltage required to ignite the lamps (2 to 5 kV) I've placed the ballast units as close as possible to the luminaire, and here's how it looks like with removed covers.
LR_uplighter_rendering.jpg _DSC2767m.JPG _DSC1186m.jpg _DSC2771m.jpg DSC_3730m.jpg
File information
Filename:_DSC1186m.jpg
Album name:Max / Misc lamps and lighting
Keywords:Lanterns
Filesize:1018 KiB
Date added:18 Apr 2025
Dimensions:998 x 1500 pixels
Displayed:99 times
Software:Adobe Photoshop CS2 Windows
URL:https://trad-lighting.net/gallery/displayimage.php?pid=762
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Comment 1 to 7 of 7
Page: 1

Sammi   [Sat 19 Apr 2025 at 14:20]
Wow.! Mind Blown Surprised
What more can I say.? Love
Ria   [Sat 19 Apr 2025 at 17:41]
How about incredibubble Laughing
Max   [Mon 21 Apr 2025 at 19:51]
Thanks ladies, it was quite a challenge to cram that many ballast on such a small space and make it look good.
Ria   [Mon 21 Apr 2025 at 23:46]
I think I would have combined the cables up to the lamps, cable-tied them together or something; to me it would look better than having them separate, but other than that, perfect Cool
Max   [Tue 22 Apr 2025 at 09:35]
I thought about that but I decided against bundling the lamp-ballast cables to avoid strong parasitic coupling between circuits. The issue is that one of the ballasts operates at above 100 kHz, and at such high frequency it is very easy to induce currents in other electronic ballasts via capacitive coupling, and I'm not sure they would react too well to that. So, by keeping the outputs separate and the luminaire grounded I ensure that I won't run the risk of killing the drivers prematurely.
Sammi   [Tue 22 Apr 2025 at 12:40]
Thanks for explaining Max, that makes perfect sense. Love
Max   [Wed 23 Apr 2025 at 22:29]
You're welcome, Sammi! There certainly are some nontrivial aspects to this system.

Comment 1 to 7 of 7
Page: 1