Lamp_o_watcher
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We are the Sultans... We are the Sultans Of Swing!
 
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| I have a GE 40/50DX that I wanna power up but I dont have the ballast to do so. Is it possible to use a 40w Fluoro ballast to do so? I wouldnt mind damagine the ballast but the bulb getting damaged is not an option
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You are young and life is long, and there is time to kill today
And then one day you find ten years have got behind you
No one told you when to run, you missed the starting gun
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AngryHorse
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Rich, Coaster junkie!
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| It would certainly start and run it, but it would be slightly under run on current, and slightly high on arc voltage.
This choke delivers 0.44A @ 104 V for 36 watt fluorescent…
The mercury lamp is 0.61A @ 95 V for 50 watt (specs from Philips lighting catalogue 1994).
What makes the lamp 40/50 watts? and not just 50?
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« Last Edit: August 08, 2023, 01:55:58 PM by AngryHorse »
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Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 57,746 hrs @ 15/12/24
Welcome to OBLIVION
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Medved
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| What makes the lamp "40/50W"? Formally rating it for operation at the smaller current.
The 95V arc voltage corresponds more to the F36T8, suggesting it will operate the lamp at about that 36W, which should be perfectly fine for a 40W rated MV.
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No more selfballasted c***
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dor123
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Other loves are computers, office equipment, A/Cs
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| It is common for the American 50W MV lamps to be rated at both 40W and 50W. I don't know why they doing this?
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.
I only working with the international date format (dd.mm.yyyy).
I lives in Israel, which is a 220-240V, 50hz country.
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Medved
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| @dor123: Probably serve the market for both of those lower power MV's, sharing common lamp product, when the market size for mainly the "40W" is rather small.
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No more selfballasted c***
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James
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| Originally Sylvania and Westinghouse only offered a 40W lamp in USA. Then in 1969 GE introduced the 50W rating which was more aligned to the already existing 50W mercury lamps in other countries. By the early 1970s Sylvania had copied it and also offered a 50W in USA, alongside its 40W. GE then copied Sylvania's 40W and offered both types. For a few years both manufacturers produced their own 40W and 50W types in USA. Due to the very small difference, it was found possible to make a dual rated lamp that operated equally well at both 40W and 50W, the actual power depending on the ballast used. That resulted in the curious introduction of the unique American 40/50W mercury lamp. I think that happened sometime around 1973-1975.
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WorldwideHIDCollectorUSA
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HID, LPS, and preheat fluorescents forever!!!!!!
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| As far as I know, Japan apparently has some 40W mercury vapor lamps that might be electrically identical to the North American 40W H45 mercury vapor lamps.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.
DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.
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WorldwideHIDCollectorUSA
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HID, LPS, and preheat fluorescents forever!!!!!!
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| @AngryHorse, I believe that the 40W H45 mercury vapor lamps and Japanese 40W mercury vapor lamps were rated for an even lower current at around 0.53A, but their arc voltage drop might be somewhere around 85V, but I am not entirely sure. Even with these parameters in mind, a 4 foot 40W T12 fluorescent tube ballast will still underdrive those 40W mercury vapor lamps as well.
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Logged
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.
DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.
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