Subject Started by Replies Views Last post
Is LED really the world’s most energy efficient light source? « 1 2 3 » WorldwideHIDCollectorUSA 38 37208 April 21, 2025, 03:40:33 PM
by Medved
Why did Lunera give their lines of drop in LED retrofit lamps female names? WorldwideHIDCollectorUSA 2 4102 April 21, 2025, 08:44:27 AM
by Alex
What is with the hate for self-ballasted mercury vapor? Multisubject 14 11765 April 20, 2025, 02:28:46 PM
by AngryHorse
Scandium in CMH lamps? dor123 8 8160 April 19, 2025, 04:51:51 PM
by James
Ceramic Discharge Tube Wire Feed-Throughs? Multisubject 2 3579 April 18, 2025, 12:46:36 PM
by Multisubject
Why my Aliexpress 70W 4000K Na-SC MH lamp don't have yellowish tinge? dor123 0 2311 April 18, 2025, 07:26:40 AM
by dor123
75W MV Ballasting « 1 2 » NeXe Lights 16 12603 April 16, 2025, 07:25:13 PM
by NeXe Lights
What the rarity of this? NeXe Lights 7 6500 April 12, 2025, 09:52:40 PM
by NeXe Lights
am i stupid for not knowing f96t12s arent actually 96 inches lightinggalleryuser33450 2 4576 April 07, 2025, 06:28:32 PM
by Lcubed3
Mystery Advance Dual 40W RS Ballast (long post warning) Multisubject 7 5990 April 07, 2025, 06:01:47 PM
by Multisubject
Why Osram changed the HQI-TS halide chemistry in the Excellence series? dor123 5 5247 April 07, 2025, 04:41:51 PM
by RRK
What lamp is this and how to power it? « 1 2 » Robotjulep 20 17289 April 04, 2025, 01:31:34 AM
by RRK
Why my Osram NAV-TS 70W Super 4Y lamp restrikes after 30 secs and not instantly? dor123 3 4058 April 04, 2025, 12:14:56 AM
by Medved
What is up with this GE mercury vapor lamp? Multisubject 9 7696 April 03, 2025, 08:17:55 PM
by RRK
Four T12 Fluorescent Lamp Questions! Multisubject 5 4447 April 02, 2025, 11:22:36 PM
by LightsAreBright27
My hypothesis on why Japan uses long neck HID envelopes Robotjulep 2 3550 April 02, 2025, 12:09:47 PM
by magslight
How to get lamps from eBay sellers who will not ship to your home country? WorldwideHIDCollectorUSA 9 9425 April 01, 2025, 02:51:14 PM
by WorldwideHIDCollectorUSA
Why is the 4ft Fluorescent tube ubiquitous? sdsw4 4 6127 March 29, 2025, 08:11:40 AM
by WorldwideHIDCollectorUSA
Semi resonant ballasting wizardry? Multisubject 10 7001 March 27, 2025, 08:39:29 AM
by Medved
MA/V vs MB/U? Multisubject 7 5618 March 26, 2025, 07:28:32 PM
by Baked bagel 11
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