Does anyone know why LPS lamps above 55 watts (e.g. the 90, 135, and 180 watt) must only be burned in the horizontal +/- 10 degrees position? I can understand...
... Sodium migration is the reason for horizontal burning. While the electrode seals are the main consideration, sodium migrating to the other end will cause a...
Yep someone in lighting-gallery.net mentioned it....after changing to HPS in 2005....he posted a LOT of pictures in Pittsburgh in Lighting-gallery.net A lot of...
Looking at Google streetview for Osaka, if it's the park I think it is, it looks like the old lighting was twin post tops...so maybe 2*100W mercury? I read the...
Actually there's some night views....not many.....the nightviews are from when they photographed only during night (so there wouldn't be daytime in that area)...
Hello everyone... in case you're interested, I had occasion to catch a couple of incandescent fixtures on a 6.6A high voltage series starting up in LA last...
... The startup is slower than a parallel arrangement even with a modern electronic regulator. An incandescent lamp filament has a much lower resistance when...
... Enjoyed the video--and thank's for the note about the start up of incandescent lamps on a series circuit. Around 1965, the City of LA opened a new street...
Thanks Jim, that was really cool! Since I never had the opportunity to see a series incandescent circuit come on. My dad used to maitain one back in the 1970's...
I recently picked up a street light I would like to restore. Can anyone tell me anything about it and does anyone have a picture of one that is complete? ...
This one is in Portugal and uses Luxeon "Rebel" emitters inside a fixture made by "Bluespan." It looks fairly serious compared to those LED fixtures that I...
I'm looking to do this on the cheap, so here goes. I am looking for a traffic signal controller/sequencer to operate two signals + a pedestrian signal. I have...
... I remember this as a kid in the 60s-70s growing up in Long Beach CA, I would also notice how the lighs would get slightly brighter and then come down to...
... That's kind of off topic here. I've built a few traffic signal controllers, both for signal heads and ped signs, but I've never made one to control...
... That's a series incandescent head. It's hard to tell from the picture what it would have looked like complete, but it may have had a radial wave reflector...
See the following link: http://www.youtube.com/watch?v=Sh69ox6-Tv4 This is a series starting up in Salt Lake City where there are literally thousands of these...
... Those old series lights rock, I grew up in Long Beach CA and remember them in egg-shaped heads. In 82 they converted to LPS on series systems, 95 or so,...
I have the opportunity to pick up an old green shade radial wave. However, it is missing the porcelain bulb socket fixture. I have posted two photos of it in...
... That is definitely a high voltage series incandescent head. Unless you plan to run it as such, your best bet is to pick up a modern porcelain mogul base...
Thanks James! The guy who has it just told me that it had a brown porcelain insulator sandwitched between the light head and shade. The insulator held the...
... It will run on whatever current the bulb you screw into it is made for. If you do use an original series socket, you will want to disable the shorting...
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