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Small clear 40 watt mercury vapor lamp
This is a small mercury lamp made by EYE / Iwasaki electric from Japan. I think I will try to run this on a 36 watt preheat ballast later, but I don't have a loose one right now.
Keywords: Lamps

Small clear 40 watt mercury vapor lamp

This is a small mercury lamp made by EYE / Iwasaki electric from Japan. I think I will try to run this on a 36 watt preheat ballast later, but I don't have a loose one right now.

DSCN4111.JPG DSCN3943.JPG DSCN3935.JPG 32231_128249890527762_100000282543594_269657_4198429_n.jpg DSCN4009.JPG
File information
Filename:DSCN3935.JPG
Album name:f36t8 / F36T8's lamps
Keywords:Lamps
Company and Date Manufactured:Iwasaki Electric / EYE
Model Number:H40
Wattage:40
Lamp Type:Mercury vapor
Filesize:160 KiB
Date added:Feb 17, 2010
Dimensions:1000 x 750 pixels
Displayed:287 times
AF Focus Position:Top
Adapter:OFF
Color Mode:COLOR
Color Space:sRGB
Contrast:0
DateTime Original:2010:02:17 23:45:55
Digital Zoom:0x
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:5/226 sec
FNumber:f/3.8
Flash:Flash, Auto-Mode
Flash Setting:NORMAL
Focal length:7.5 mm
Focus Mode:AF-S
ISO:50
ISO Selection:AUTO
ISO Setting:0
Image Adjustment:AUTO
Light Source:Unknown: 0
Make:Nikon
Manual Focus Distance:0 m
Max Aperture:f/2.7
Model:COOLPIX P3
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=899
Favorites:Add to Favorites

Comment 1 to 8 of 8
Page: 1

vaporeyes   [Feb 18, 2010 at 02:47 AM]
Do they still make these lamps? I've seen the 50w version, but not the 40. Very cool lamp! I have never seen a 40w MV ballast - if I could get 3 of these lamps & 3 40w MV ballasts I'd replace the 35w HPS wall lights on my house in a heartbeat.
f36t8   [Feb 18, 2010 at 01:24 PM]
They are still listed in their catalog, http://www.eye.co.jp/sources/mercury/, but I got this one from eBay.
Sailormoon_01_uk   [Feb 18, 2010 at 03:53 PM]
Yep they are still made in 40 watts by Iwasaki EYE in the UK see http://www.iwasaki.co.uk/ I have one of these myself aalso from E-bay, aka jonnyboi05 I also bought a 100w GE Mercury and a Iwasaki EYE 200w Mercury from the same guy.

You can light these on a 35w Metal Halide Baallast without a Ignitor.

All the Best

Colin
A_lights   [Mar 13, 2010 at 05:34 PM]
using a 35W MH ballast will overdrive the lamp, you would be best using a preheat FL ballast. wich should power it at 35~40 W using 35W MH would power the lamp at 60~70 W! if it is rated at 40/50W then you could use that set up. The arctube just blackens quicker, though higher light output.
Silverliner14B   [Mar 13, 2010 at 09:14 PM]
No Aaron, the 40w and 50w mercury lamps operate at 90 volts at full brightness, same as the low wattage MH lamps.
Sailormoon_01_uk   [Mar 15, 2010 at 09:01 AM]
Hi I have lit 40w Mercury Lamps on a 35w Metal Halide/HPS (Euro type) and have had No Problems, I even have lit a vintage 40w Osram MBM/U Mercury Lamp for Mining applications on a 35w MH/HPS ballast also have had No problems, I would not use a 40w fluorescent Ballast as they run at 102 volts 0.44 amps which would damage the lamp and overheat the ballast, if you don't have a 35w MH/HPS ballast a 35/55w SOX choke type Ballast would also be fine as they run lamps at 70 to 104 volts and 0.6 amps
Medved   [Mar 15, 2010 at 08:30 PM]
@Silverliner14B: On discharge lamps you should not compare voltage, but current. The current does depend on the arc voltage, but only very slightly (100V instead of 70V arc voltage cause the current to drop only by ~5%)

@A_lights: 35W MH are 0.5A, 50W MV are 0.61A, 40W MV are about 0.49A nominal, so 0.5A is in the tolerance (due to higher arc voltage the current might be a bit lower, so it might even match perfectly - depend on ballast).
And 4W MV's are usually rated for 50W as well, so they do work correctly with any ballast delivering current in range 0.48..0.61A...
Silverliner14B   [Mar 15, 2010 at 11:05 PM]
Medved, I meant that lower voltage arc tubes tend to run at higher current and vice versa. I was a bit vague in my explanation.

Comment 1 to 8 of 8
Page: 1