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Mercury vapor table lamp

Mercury vapor table lamp

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Idea courtesy of TheUniversalDave1. I took my 50 watt mercury vapor fixture to the living room, screwed an outlet adapter into the socket, plugged this table lamp into it, and screwed in one of my Philips Lifeguard lamps. The result was pretty nice.

I also learned a useful piece of information - mercury vapor lamps do NOT like being run base-down. It won't hurt them, but in that position they release heat too readily, and have a hard time keeping all the mercury vaporized, especially if driven at less than full power. As such, they can't retain full arc voltage, and light output suffers.

IMG_4605.JPG IMG_2694.JPG Mercury_vapor_table_lamp.JPG 34-40_comparison.jpg

Light Information

Light Information

Lamp
Lamp Type:Philips Lifeguard 40/50/DX MV
Fixture
Ballast Type:50W MH ballast + current-limiting resistor

File information

File information

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Filename:Mercury_vapor_table_lamp.JPG
Album name:themaritimegirl / Experiments, Projects, & Mods
Keywords:Lamps
File Size:235 KB
Date added:Oct 14, 2014
Dimensions:2050 x 1537 pixels
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TheUniversalDave1
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Oct 14, 2014 at 09:50 PM Author: TheUniversalDave1
Interesting that MV's don't like running base down. I've been thinking about screwing some eyelets on the underside of my fixture to hang it upside down. The HPF Universal 446-LR-TC-P only pushes about 30 watts through each lamp, so maybe there would be a bit more light.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

themaritimegirl
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Oct 14, 2014 at 10:15 PM Author: themaritimegirl
Did you see the comment I posted on your photo about that?

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TheUniversalDave1
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Oct 14, 2014 at 10:22 PM Author: TheUniversalDave1
No, I never did see that. Even if I did, I probably would have forgotten.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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Oct 14, 2014 at 10:32 PM Author: TheUniversalDave1
Well, running the lamps horizontally in my fixture is out of the question. They flicker violently at about 20 hertz. The ballast doesn't like it either.

Running the lamps base up does provide quite a bit more light. Maybe if the A/C vent was not dumping icy cold air right on top of the lamps, they would stay brighter running base down. Oh well.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

themaritimegirl
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Oct 14, 2014 at 11:30 PM Author: themaritimegirl
It's weird how prone to flickering your fixture is. It must have to do with the lamps running in series.

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dor123
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Oct 14, 2014 at 11:37 PM Author: dor123
MV lamps, can be operated base down without problems. This is a problem mainly for probe-start MH lamps, which the halides condenses where the starting electrode located.

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 European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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Oct 14, 2014 at 11:55 PM Author: themaritimegirl
MVs are subject to the very same risk of the mercury condensing on the starting probe, although it's not likely. Other than that the inability to maintain optimum operating temperature is the only problem.

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Oct 15, 2014 at 11:22 AM Author: rjluna2
Nice, Trent. You are not the only person who has HID on the table lamp here. Here is one I have it converted posted at Table Lamp with 100W Metal Halide Lamp and Gear

Pretty, please no more Chinese failure.

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EYE H80 Mercury Vapour


Brian TheTellyman
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Oct 15, 2014 at 01:07 PM Author: BG101
My Sylvania 80W MBFs are quite flickery when operated vertically but the Eye lamps seem stable. The more well-used Sylvania (4000 hours or thereabouts) did settle down after a few nights' use in the uplighter.


BG

Say NO to DICTATORSHIP in the form of bulb/tube/ballast bans !!

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Oct 15, 2014 at 09:48 PM Author: TheUniversalDave1
I might also add that my MV fixture is less than a foot from my face when I'm on LG. I use it every night for close to six hours.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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Oct 15, 2014 at 09:51 PM Author: themaritimegirl
Mmm, maintaining that Alabama tan.

Right now Mine's running in one of my nightstand lamps, which has been moved to my work table, because I took the lamp out of my F15T8 desk lamp home over the weekend in case I needed a guinea pig lamp to experiment with, and I forgot to bring it back with me. It's running off my full power HPF F40T12 ballast (which I've moved into my former 175W MH fixture to temporarily convert it to a second 50W MV fixture), and running base-up it provides about the right amount of light.

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Oct 15, 2014 at 09:59 PM Author: TheUniversalDave1
Yeah, I'd get an allybammyville tan real fast without the outer glass bulb on the lamps! You should see my left wrist. I've got a great big tan line from the Trusty Timex Ironman! (Thanks, Dieselducy!)

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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