Subject Started by Replies Views Last post
Why are Philips 54-765 lamps the most popular standard colours lamps? WorldwideHIDCollectorUSA 5 972 December 14, 2021, 11:27:18 PM
by WorldwideHIDCollectorUSA
Why are PL-L lamps in the Korean countries called “FPL” lamps? WorldwideHIDCollectorUSA 1 627 March 01, 2022, 08:39:54 AM
by bulb_tester2009
Why are SBMVs so inefficient? Lumex120 2 1276 December 08, 2015, 04:27:56 PM
by Ash
Why blue and green MH lamps don't have coatings at the ends? dor123 2 702 August 03, 2022, 02:11:37 PM
by James
Why capacitors affect lamps performance in North America dor123 7 2075 October 23, 2023, 01:14:41 AM
by WorldwideHIDCollectorUSA
Why CMH have a longer hot restrike time if the internal perssure lower than QMH? dor123 3 2020 February 10, 2016, 08:57:07 AM
by Medved
Why did Australia import some HID lamps designed for the North American market? WorldwideHIDCollectorUSA 2 787 September 21, 2022, 03:34:43 AM
by Al_M
Why did Iwasaki HID lamps become so popular in Australia? WorldwideHIDCollectorUSA 6 1201 January 28, 2021, 06:49:35 AM
by LightsDelight
Why did SOX lamps dominate the low pressure sodium lamp industry? « 1 2 » WorldwideHIDCollectorUSA 19 3749 October 28, 2020, 08:48:31 AM
by Rommie
Why did Venture lighting develop metal halide lamps with unique wattages? WorldwideHIDCollectorUSA 7 762 June 02, 2023, 11:49:30 PM
by Robotjulep
Why do Japanese screw base lamps use the North American designations? WorldwideHIDCollectorUSA 12 1681 May 11, 2024, 03:33:26 AM
by WorldwideHIDCollectorUSA
Why do most Japanese non-integrated CFL lamps use G10Q bases? WorldwideHIDCollectorUSA 5 842 August 03, 2022, 06:12:08 PM
by WorldwideHIDCollectorUSA
WHy do people hate ALTO bulbs? HomeBrewLamps 9 1814 August 06, 2017, 11:15:16 AM
by sol
Why do probe start metal halide lamps need to be group replaced? WorldwideHIDCollectorUSA 6 1140 April 29, 2021, 09:19:36 PM
by Xytrell
Why do so many of us prefer magnetic ballasts over electronic ballasts? WorldwideHIDCollectorUSA 9 1917 October 28, 2020, 03:44:15 PM
by Ash
Why do some CFL's buzz? lightman64 4 2448 April 04, 2009, 12:44:52 PM
by bluelights
Why do some metal halide lamps have barium getters? WorldwideHIDCollectorUSA 3 326 May 17, 2024, 01:46:52 AM
by Medved
Why does Europe have a BC socket and Screw in TudorWhiz 1 1858 March 24, 2009, 08:09:36 PM
by Medved
Why does Japan have so many HID retrofit lamps for mercury vapor ballasts? WorldwideHIDCollectorUSA 9 326 May 09, 2024, 04:58:43 AM
by WorldwideHIDCollectorUSA
Why does Japan have very few off brand light bulbs? WorldwideHIDCollectorUSA 6 1031 September 03, 2022, 09:00:25 AM
by Silverliner
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