Have any of you tried experiments to see how long a bulb lasts according to the average rated life? Not necessarily with your own fixtures, but even noting...
I have heard both of these theories but wondered which one is the more accurate reason for a cycling HPS bulb. 1) Due to the age of the bulb, the arc tube gets...
I have plenty of experience at work. I recorded the date of installation on most lamps I installed at work. Here are the results: 13 watt quads: GE and...
#1 is more accurate. As the lamp ages, the arc tube voltage gradually increases. Eventually it gets to the point where the output voltage of the ballast can...
I installed a 60w Philips Halogena in the fixture near my front door over 2 years ago & it is still working. It is used an average of 4 to 5 hours per night. ...
... according to ... even ... long it lasts. ... I've never tried it with HPS lamps, but I do date my compact fluorescents when I install them in dusk till...
... which it can ... ballast, and ... Overload protectors are very rare on HID ballasts. The only ones I've ever seen are in the potted type that look like HO...
A few more of the globe lights in the Pioneer Square area are white now. 2 on 2'nd between Yesler & James and a few on Yesler and James just west of 2'nd Ave....
Last year I spotted a 100 watt HPS sodium streetlight that was making a dim white colored light, something like a 50 watt mercury vapor bulb would produce. At...
... I have known HPS lamps to lose their sodium and to keep on working. Usually they start cycling first, but there are "non-cycling" HPS lamps. I guess that...
Don Klipstein
don@...
Nov 5, 2006 9:17 pm
5269
I know the arc tube turns black at the ends in a failed bulb, but does the whole bulb usually turn black with the clear HID bulbs? I found a HPS floodlight...
Can somebody explain the color difference between a MV and a MH bulb. I have a hard time with the coated bulbs I see operating to distinguish what type of ...
... Back in the first half of the 1980's, I trashpicked enough lamps from the dumpsters of Mitchell Maintenance (or was it Mitchell's Maintenance or something...
Don Klipstein
don@...
Nov 6, 2006 1:18 am
5272
... MH has better luminous efficacy and better color rendering than phosphored MV of same color. Look at how people and red objects appear under both....
Don Klipstein
don@...
Nov 6, 2006 2:12 am
5273
... does the ... haven't been able to ... occurance or not. ... If the sodium leaks from the arc tube it attacks the glass and blackens the outer bulb. I've...
... making a dim ... would produce. ... and didn't ... year ... dim light. ... expected a bulb ... The pressure in the arc tube is low, I've seen this caused...
I used to date code all my lamps at home, although I've not been quite as systematic about that anymore. As for the modern lamps: In the 80's & 90's I found...
<<< Can somebody explain the color difference between a MV and a MH bulb. I have a hard time with the coated bulbs I see operating to distinguish what type of...
I know this is hard for you to pin-point the problem without seeing the fixture/bulb, but I have a question. There is a streetlight on my way home that last...
I'm not sure why this would happen, but I have seen it before. There is a wall pack light outside my building that I saw cycling one night, but was steady the...
... There is ... again. ... may ... I suspect the higher line voltage during times of lower demand plays a part in this. As you reduce the line voltage, an...
Yes, I also have observed it with MV, working one night then off the next. Is what I just wondered is, could the weather have something to do with it? Like it...
is this the right place to post this topic. i have invented and made a lited stopsign that is solor powered, is has already been approved by the FHWA and MUTCD...
While at Wendy's in Ballard Seattle, I noticed the line of five square light fixtures at the nearby Walgreens (15th and Market). They were readily recognizable...
... We're a group of lighting enthusiasts, mostly hobbyists with very few of us working in the business. The focus here is mostly roadway lighting though there...
I had a question about the proposed MV ballast ban for Jan 08. Is this ban because of the ineffeciency or the ballast itself or MV bulbs compared to other ...
While I was looking at Sylvania's website last night, I noticed that they don't have any smaller (100W 150W) HPS available in mogul base. I didn't know if ...
... this ban ... compared to other ... the web ... was not ... energy efficent. ... washing ... hogs and would ... them, to ... wondering if ... It's the...
In a message dated 11/16/2006 6:59:45 PM US Eastern Standard Time, ... If that is the case, then why are they just banning the ballasts and are still going to...
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