Subject Started by Replies Views Last post
why does MV glow dimly at first while restrikng, then go out completely? ace100w120v 6 3570 January 07, 2012, 11:19:53 PM
by LowPressureSodiumSOX
Why does Japan have very few off brand light bulbs? WorldwideHIDCollectorUSA 6 1538 September 03, 2022, 09:00:25 AM
by Silverliner
Why does Japan have so many HID retrofit lamps for mercury vapor ballasts? WorldwideHIDCollectorUSA 9 1885 May 09, 2024, 04:58:43 AM
by WorldwideHIDCollectorUSA
Why does Europe have a BC socket and Screw in TudorWhiz 1 2598 March 24, 2009, 08:09:36 PM
by Medved
Why do some PAR38 reflector lamps have a hexagon on the front WorldwideHIDCollectorUSA 1 1755 November 20, 2024, 05:36:18 PM
by James
Why do some metal halide lamps have barium getters? WorldwideHIDCollectorUSA 3 1396 May 17, 2024, 01:46:52 AM
by Medved
Why do some CFL's buzz? lightman64 4 3331 April 04, 2009, 12:44:52 PM
by bluelights
Why do so many of us prefer magnetic ballasts over electronic ballasts? WorldwideHIDCollectorUSA 9 2931 October 28, 2020, 03:44:15 PM
by Ash
Why do probe start metal halide lamps need to be group replaced? WorldwideHIDCollectorUSA 6 1713 April 29, 2021, 09:19:36 PM
by Xytrell
WHy do people hate ALTO bulbs? HomeBrewLamps 9 2787 August 06, 2017, 11:15:16 AM
by sol
Why do my Christmas lights start flickering every time I turn on my fluorescents Philips tigkas 10 4236 December 05, 2024, 12:10:05 PM
by Philips tigkas
Why do most Japanese non-integrated CFL lamps use G10Q bases? WorldwideHIDCollectorUSA 5 1509 August 03, 2022, 06:12:08 PM
by WorldwideHIDCollectorUSA
Why do Japanese screw base lamps use the North American designations? WorldwideHIDCollectorUSA 12 3153 May 11, 2024, 03:33:26 AM
by WorldwideHIDCollectorUSA
Why did Venture lighting develop metal halide lamps with unique wattages? WorldwideHIDCollectorUSA 7 1361 June 02, 2023, 11:49:30 PM
by Robotjulep
Why did SOX lamps dominate the low pressure sodium lamp industry? « 1 2 » WorldwideHIDCollectorUSA 19 5282 October 28, 2020, 08:48:31 AM
by sox35
Why did Japan use low voltage 1000W MV lamps despite being the 100V country? WorldwideHIDCollectorUSA 1 1143 May 29, 2024, 01:27:12 AM
by Medved
Why did Iwasaki HID lamps become so popular in Australia? WorldwideHIDCollectorUSA 6 1672 January 28, 2021, 06:49:35 AM
by LightsDelight
Why did Australia import some HID lamps designed for the North American market? WorldwideHIDCollectorUSA 2 1252 September 21, 2022, 03:34:43 AM
by Al_M
Why CMH lamps weren't made in 5000K color and above? dor123 10 3627 September 10, 2024, 04:10:00 PM
by Medved
Why CMH have a longer hot restrike time if the internal perssure lower than QMH? dor123 3 2766 February 10, 2016, 08:57:07 AM
by Medved
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