I have been experimenting with ferrite core "matching transformers" connected to standard electronic ballasts for F32T8 lamps. Thus far, these cool little...
... transformers" connected to standard electronic ballasts for F32T8 lamps. Thus far, these cool little devices invented by a fellow streetlighter buddy are...
... connected to standard electronic ballasts for F32T8 lamps. Thus far, these cool little devices invented by a fellow streetlighter buddy are awesome! They...
... Yes that's exactly what it is, and while I haven't experienced it with a mercury lamp I did have problems trying to run a ceramic MH lamp at 50 KHz....
Hello all I have been approached by the Institution of Lighting Engineers to compile an archive of lighting related photographs. The primary aim is for these...
I've never been quite able to figure out the mystery surrounding GE's M1000 and Westinghouse's OV50 Silverliner. Both of these versions started out with fins...
Doc--in 1959 both the M-400 and M-1000 were intorduced, and I have a beautiful example of a 1959 M-400 in my collection! The M-1000 was introduced forat as...
It is highly likely that the "fins" or ribs you are referring to were designed into the casting to act as a heat sinc for the luminaire, drawing the heat from...
... compile an archive of lighting related photographs. The primary aim is for these to be used for PowerPoint presentations and the idea is that the archive...
They were there to house the capacitors in a cooler environment, NOT to heat sink the light itself. They were hollow castings, and attached as seperate parts...
... beautiful example of a 1959 M-400 in my collection! The M-1000 was introduced forat as non-finned, in silver, with the early style "shallow angle"...
... drawing the heat ... accomodate a 1000 ... at any ... note that most ... know, ... housings of ... paid for) is ... better....at least ... This is not...
Hi there...Just wanted to weigh in on the fin issue... Hearing that the fins were not originally part of the mix leads me to a couple of thoughts. These are...
Just so you guys know, GE and Westinghouse were not the only MFGs to have the fins. Albeit, I have only seen one, but it was a 327 with a fin. The overall...
Yep Kevin, that's an older "327". I have seen these too, and you guys forgot the Reveres which also had fins :-) Dave kcbhiw@... wrote: Just so you guys...
Hey Guys, Don't tell me the /W lamp is completely obsolete, LOL. It's actually back in production, sorta ;-) I know of a Chinese made Westinghouse mercury lamp...
-I have one of these bulbs. It appears to be well constructed. Now if they would only bring /C and /N lamps back in production. I've been looking for a /N lamp...
I've uploaded a picture of what appears to be a half-breed of a 325 and OV50 that happens to be finned. This particular parking lot had two fixtures, this one...
Jim--cool way to look at it, it may enter in, but honestly, they DID have integrally ballasted OV-50's and M-1000's before the fin, and the capacitors were in...
... knowledge. ... from him ... they could ... feature. ... but it ... and OV50s ... one came ... kept GE ... meant that ... with ... common ... Something else...
... back in production, sorta ;-) ... local Chinese restaurant, in a Westinghouse NEMA fixture (ironic isn't it). When it was first in use, it looked like a...
... have integrally ballasted OV-50's and M-1000's before the fin, and the capacitors were in the fins, si I'd lean more towards the running cooler thing....
I have one of these lamps in the 175w size. When viewing it through a diffraction grating I see the phosphor glowing red-orange, like a /DX but a darker shade...
Check out the pics I uploaded to the folder "Natural White Mercury" - Alain and I did a direct comparison between the /N mercury lamp and a 300w Incandescent....
I have a question that is probably elementary, but I will ask it anyway. I was just curious about the suffix designations and their meanings, like /N, /C, /W,...
The suffixes define the type of phosphor used in the coated or "white" mercury lamps. Clear lamps have no suffix usually. Phosphors are added to mercury lamps...
The Ceramic Metal Halide lamps were invented in Europe and the whole range was developed to run on the standard ballasts for HPS. However in USA the HPS lamps...
Alain, In low pressure fluorescent lamps the mercury produces short wave UV radiation that excites the phosphor. However certain xenon molecules can be made...
Hi Michael, Indeed in HPS you can find rather wide frequency bands that are free of acoustic resonances. But if you find these bands, they rarely stay...
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