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.
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.
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.
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.
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
@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...
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You can light these on a 35w Metal Halide Baallast without a Ignitor.
All the Best
Colin
@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...