The High Pressure Sodium Lamp (HPS)
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- Опубликовано: 13 дек 2011
- How it works, inventors, variations. This lamp is the most popular lamp for street and outdoor lighting in the world due to its high efficiency and acceptable color rendering. The lamp has an arc tube made of Lucalox. It uses mercury and sodium vapor combined to create a yellow-pink light. It was invented in Schenectady and Nela Park. See more videos about the electric light at RUclips/EdisonTechCenter
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I agree,Orange is very pleasant for eyes than white leds
I like this yellow and orange color
CUBETechie
I know right! Not these new daylight color led ones.
It's great because it can be easily filtered out by astronomers.
I will always remember the warm orange glow of night time before white LEDs took over. Kids these days will never know what the night looked like.
Nobody cares about those trash Depressing lamps
we used to have one of these over our driveway, I loved the orange glow they give off!
Aluminum oxide ceramic is used in high pressure sodium lamps, not just because the high temperatures involved can damage glass and quartz, but due to the corrosive effects of hot sodium chemically attacks glass and quartz. Aluminum oxide ceramic was found to be the only material suitable for the temperature (around 2,300°F) and effects of sodium. In fact there is a variation of metal halide lamp that uses the same arc tube material as a high pressure sodium lamp, it's knows as the Ceramic metal halide (CMH) and actually has a very high CRI over 90, with less color shift over the life of the lamp and higher lumen maintenance. The CMH lamp is very popular for use as grow lamp for indoor gardens, with 315 and 630 watt versions commonly used.
I love these lamps
Me too
Me three
Me too
@@thelampcollections8190 i like mercury lamps and old street lights, especially the polish street lights :D
It's a trash Depressing lamps
Love the name, Niskayuna. First time hearing it.
I feel nostalgic when I'm walking around and see this.
Same. It’s sad to see that most of the street lights in my area are being replaced by LED.
@@MySliceofLifeAnimation The entire city here the Philippines has done it to
@@MySliceofLifeAnimation LED streetlights send us to the past, at the time of Mercury lamps with theirs white light
As far as I know the aluminum oxide ceramic is not just used because of the heat, but also because silicon oxide (glass) reacts with sodium vapor.
So do you think the inside of the glass is insulated by the material? Because with no insulator as you said, if it's true, the sodium would react with the glass
@@happytrails5342 the plasma is fully contained inside the alumina ceramic tube.
@@JulesStoop but what about the lps lamp?
I love this lamp, l've lamp of sodium lamp conglatulation for the vídeo l love so muth thank you!
Exactly what I was wanting
Thank you for this video, you explain everything very nicely, its very welcome to have a video instead of reading piles of text :\
excellent
here in connecticut my town is phasing out the high pressure sodium street lights and switching to LED lighting
Can a didymium filter block some of the sodium vapors from this high pressure sodium lamps? It's because I want to buy a filter that I can use with my camera so I can reduce the amount of sodium vapors when taking picture of sky in heavy light polluted city.
standard US high pressure sodium lamps actually require double the wattage they claim to be.
I use one of this bulbs in my room it uses a MH shop light ballast
Hello. Inside a discharge bulb. "whether it is mercury vapor or high-pressure sodium vapors". Their tubular sources made of hard glass, or ceramic "are they more hot than halogen bulbs at maxy temperatures?"
High-pressure sodium vapor bulbs, more than mercury vapor bulbs?
We collected the sodiun from the LP lamps and made fireworks with water from them!
So if i have a fixture with a pulsing starter, can i use it to drive both lamps with and without the strips?
No you can’t you née the strip to carry the current.
I caught the amalgam thing during shooting but he wanted to say it his way. It is like when GE told Steinmetz no smoking, and the reply was: "No cigar, no Steinmetz"... ok ok
Can I use this kind of lamp indoors, like in the bedroom or bathroom?
I've read a review on amazon about someone who used a parking HPS lamp in it's bedroom, referring to it as it's "sunshine". I guess it's a personal preference since the light output is mostly yellow.
You could but It would probably warm up your room quite a bit which wouldn't a problem during winter. Also, you cannot just plug it into your light fixture (You could, but too complicated). You would need a Ballast.
@@ShawnGuertin LPS are more monochromatic which for long periods can affect your eyesight (maybe make you colour blind).
@@stoopidhaters I meant HPS, this is rare to see someone use it indoors, but unless they stare at it it shouldn't be a problem.
My sodium light is staying on lately and won't shut off. What do I do?
I need help, i saw some nice looking street light, but i am sure it's not LED, its nod sodium, and it looked to modern to be mercury vapor lamp, what can it be? It was bright white, but not like LED.
+Streetlevel992 Its most likely a metal halide
yeah, and it's brighter than LED, but i guess it spends a lot of power
Metalic vapor
Induction
@@arthurfleck1209 Funny, don't they use Light Bulbs to douche?
I love HPS lamps... They have about 2000K, so they produce negligible ligth pollution (you can see beautiful stars on the sky at midnight), they havent any "blue light" like LED, so they are better for sleep, nature, insects... They have long service lifetime (some types VERY long) and they are from the glass, metal etc., but NO plastic, like so many LEDs, so they are made of quality material. There are many reasons, why they are better, than LEDs.
Some of the newer light bulbs look white too
i hate led with cool daylinght temp for street light,i prefer to orange/warm white light like sodium light,sadly in indonesia they start cange to cool white led,i hope they keep warm white color with led like sodium in past.....
I already have two SOX-E 18w bulbs and the head of a street light along with it.
I WILL get my hands on a SON-T PLUS 50w (or if someone knows a hps with lower wattage i will use that)
I am looking to start a street light collection
Heh, well i already reached my goal. Two nice 70 w lamp post tops for hps.
The purdy channel definitely do that. I bet it’d look awesome.
FYI, amalgam is pronounced: Uh mal' gum, not Am' uhl gam.
I have a street light that won't work and I changed the bulb what do I need to do
Check the capacitor's capacitance compared to it's value, then check the ballast's impedance, then check the measured open current.
What voltage does the lamp operate at the mogul base?
55v for 35-150w lamps and 100v for 200-400w lamps. I forget how many volts a 100w HPS lamp would take.
subway5411 US 100w HPS lamps operate at 55v on S54 ballasts while european 100w HPS lamps actually operate at 100v and can operate on US 100w M90 metal halide ballasts.
interestingly, european 250w and 400w HPS lamps can run on US 250w and 400w ballasts respectively.
Strange, this HPS works differently than what I heard what high-temperature sodium lamps work like a few years ago.
The lamp reaches a high temperature. High temperature means, the sodium ions move really fast. The sodium ions that emit the light move fast. The doppler effect then changes the color of the light. Redshift and blueshift happens. The shift widens the spectrum of the light emitted from the sodium from a narrow strip in the center of the visible spectrum to the entirety of the visible spectrum. The visible spectrum is covered evenly.
Are there lamps that work that way or is it simply not possible? Did I mishear completely?
Sounds like bullshit. The sodium ions would probably need to move at relativistic speeds to get that kind of dopple effect.
Ьзе екыж нлщв за тгжжвощн
Hps peach colour...Lps is orange/yellow
What city is shown at 0:34? Anyone know?
Telluride, CO
@@TevinP Thank you.
2:01 You pronounce 'amalgam' like "amill-gam"
it's pronounced Ah-mal-gum
*Why can't they use aluminum oxide ceramic for Metal Halide bulbs? They would last alot longer*
lol
They actually do and the are known as CMH lamps or ceramic metal halide, they have a near perfect CRI (color rendering index) however they are a bit pricy.
As per my knowledge, CMH bulbs actually die off faster,
@@seannolastfuqingname7308 I can attest to that. They do die quickly sometimes right out of their box. I'm guessing the alumina doesn't like mercury amalgam especially at those temperatures. Used to be my favorite until I discovered they are not a good bulb by design.
костя💡👍250
4:19 stept down the ampers not the voltage....
i eat these
Bro’s from Ohio 💀
not amil-gam
You can't lose your sense of direction in Colorado ask me why
why?
+leslie watling reasons
So street lights are made of salt? Interesting.
Salt is Sodium AND Chloride.
hps lights were a complete down grade from mercury vapor in the 70-80s when they replaced them... the orange glow hides dark objects.. dark cars, clothing on people.. it makes it hard to see cars with their lights off, hard to see people walk across streets.. Im a firm believer this light is a huge cause for accidents, and people getting run over at night.. I had a co worker die walking across a street lit up by an HPS light.. the driver claimed they didnt see him.
Mercury vapor may have 2x less lumens per watt, but the lamp has all the color spectrum we can see with the coated bulbs.. This lights everything up and shows the color of everything.. its the light spectrum we see during daylight. This is why this light is superior.. but for some reason idiots with lumen lux and par meters.. think hps is better so the entire country got converted... Now suddenly LEDs are being used everywhere.. and guess what.. the color spectrum is 4-8k the same as mercury vapor and not one person will deny that its easier to see a parking lot or street or people with led lights than HPS.... what a total crock HPS lights were and a waste of time money and effort replacing all the mercury vapor lamps with.. and
It will get replaced by led anyway
If only they had a method to color correct the hps lamp, by maybe making the outer glass like a bluish color?
@@user-hj6df3jf4w they have coated hps bulbs like they did mercury vapor but i dont think it does much.
To be honest I never really liked the colour of the HPS lights, I mean if it’s an LED or at least not as orange as Trump.
I don't like the orange light either I like old Mercury vapor and mh lighting..
I agree these lamps are ugly and depressing
Sadly these beautiful lights are being phased out and replaced by horrible ugly bright white cold gloomy LEDs
It's the opposite for me these lights are depressing af