31   Lamps / Modern / Re: CPO-TW 45w on 50w SON driver?  on: June 22, 2025, 04:22:00 AM 
Started by Laurens - Last post by dor123
Here is a user that runs a Philips Cosmowhite CPO-TT 90W Extra on a 100W HPS gear: https://www.youtube.com/watch?v=7lWFXWC63pQ
 32   General / Off-Topic / Re: Do you dislike summer?  on: June 22, 2025, 01:16:10 AM 
Started by phosco179 - Last post by joseph_125
The longer days are my favourite part of summers here in Canada. Close to the summer solstice, it doesn't get dark until 9PM here. Meanwhile the darkest day here on the winter solstice, it get dark at around 4:30PM.

The heat and humidity can be pretty hard to tolerate, but most people have AC here which helps a lot. And I much rather prefer heat compared to -20C days in the winter, or shoveling snow.
 33   General / General Discussion / Re: eBay is trying to stop incandescent sales  on: June 22, 2025, 01:01:56 AM 
Started by Silverliner - Last post by Laurens


I do believe that consumers would pay a premium for incandescents up to a point, though. If someone had one or two lamps they specifically wanted to use incandescents in, for example, they would probably justify paying $5 or more for a high quality bulb. While expensive, it would be roughly an annual expenditure and not enough to impact most people's budgets.

Specialty stores here are still coasting on the old stock incandescents. You can literally walk to the specialty stores in Amsterdam or Den Haag and walk out with an entire backpack full of standard incandescents.
But clearly, people aren't really doing that a whole lot becuase the stocks still haven't depleted and we're more than 10 years after the ban of import and production of incandescents in the netherlands.

Alternatively, all thrift shops have bins full of both new and used lamps of all types. I sometimes see people dig up incandescents. Apparently those people really want them, but also they will just keep buying them there for €0,50 to €1 for as long as people keep bringing in NOS incandescents to the thrift shop. As for their motives - i have no clue if they really specifically look for incandescent light, or that they are completely ignorant about the differences and just buy them out of habit, or whether they need them for dim bulb limiters like i do.

It will take another decade or so (hell, maybe even more) to actually deplete existing stock, so only then super expensive new production won't face the competition from cheap, sunk cost/written off old stock.

Any peron caring about light quality today will likely sooner buy a 94 CRI led (the Ledvance thing i have is definitely good) than deal with the fact that modern fixtures are usually not designed for more than 25w of thermal energy, conciously buy older fixtures that still have heat resistant sockets etc.

Maybe in 50 years time, when stocks have properly dropped to the level of individual NOS lamps' prices rising to 50 euro a piece, that it will be possible to restart a small scale production system, like they're currently doing with bright emitter vacuum tubes: https://brimaruk.com/product/ediswan-type-r/ or like Dalimar is doing with brand new Nixie tubes.
But it will be a considerable amount of manual labor, and you'll be looking at cost closer to 50 euro than 5 euro per lamp.

Getting an automated production line up and running will be at least 2 million euro just to fix everything in the production line (just getting 'stiff' mechanisms, iffy limit switches and old computer control systems working again) and re-line the glass furnaces and stuff. Double or triple that if you have to strip out the tons of asbestos from legacy production facilities. Philips' glass furnaces are still around and have not been demolished yet. It wouldn't surprise me if that's becasue the furnaces are absolutely filled with asbestos and they're hoping the company's remains switch owners often enough for the national government to lose track and the cost for cleaning up the mess just goes to the tax payer...

More likely is that this will just happen in China, though even China doesn't seem to be bothered with producing incandescent lamps anymore. India maybe?



 34   General / Off-Topic / Re: Do you dislike summer?  on: June 22, 2025, 12:54:07 AM 
Started by phosco179 - Last post by Baked bagel 11
@phosco179 Don't come to Australia then! In summer, I have to walk home in ~38° weather! Going outside in spring usually involves a swarm of mosquitos. With that said, I do love living here and certainly prefer hot whether to the below 0 whether we have now! :'-)
 35   General / Off-Topic / Re: Do you dislike summer?  on: June 22, 2025, 12:26:12 AM 
Started by phosco179 - Last post by Laurens
I love summer. It's the season in which i can go out without wearing sweaters and stuff. I even perform significantly better on my road racing bicycle. I can ride my motorcycle in leathers without getting chilly on the highway. And i love the smell of all the plants.

Since i work in education, it also means 4 weeks of vacation.

The only thing is that since climate change properly set in, my formerly cold and rainy country now has a fairly significant number of days between 30 and 40 degrees. In those nights it's hard to get my bedroom to stay below 25 degrees, so i've succumbed and bought an AC. Luckily my rental has a PV system that costs me 10 euro a month, and is enough to run the AC for completely free between about 9:00 and 15:00. Being so wasteful with electricity feels super weird to me, since operating it for that time period would normally cost me 1,50 per day. I can backfeed but the more i backfeed, the more grid usage fees are levied so i don't miss a lot of income by using my own power.

With regards to mosquitos: fly screens. They are indispensible. I've always had them until now. Even if it's just a cheap and shitty one you attach with velcro tape to the window frame, it's worth it. I am currently without in my new house because i have plastic/PVC window frames that i'm not allowed to drill into so i'm still thinking about how to attach one. Might hot glue magnets to the frame (easy to remove without a trace with IPA) and glue steel strips to a length of fly screen material, idk yet.
 36   General / Off-Topic / Do you dislike summer?  on: June 21, 2025, 10:19:46 PM 
Started by phosco179 - Last post by phosco179
For me, I can’t stand it tbh! As I’m tying this, it’s 3am and it’s 22° but I’m still hot. I had a cold shower a few hours ago and I feel like having another one. I tried opening the window and it’s helped a bit but not by much, and now I’m having to deal with mosquitoes coming into my room. I’ve already killed 3 in the space of roughly 10 minutes! Sleeping is also a struggle since you can’t use the blanket and both sides of the pillows are warm. I had to take my shirt off since it was clean and I didn’t want to ruin it by getting it bathed in my sweat. I’m feeling less hot now but my forehead and my body is still sweating slightly. Stuff like this makes me miss early-mid spring tbh.

The one thing I love about summer though is that I get more freetime to go to places or to spend time with my relatives. I have plans for this summer which I’m hoping to fulfill all of them, and I’m definitely down for going to the beach.
 37   General / General Discussion / Re: eBay is trying to stop incandescent sales  on: June 21, 2025, 06:41:58 PM 
Started by Silverliner - Last post by Wingnut
I think at this point let's be honest with ourselves incandescent is a dead technology that will never be revived again.
It's not longer practical to use energy wise and today's generation is no longer interested in outdated technology.
The manufacturers have invested to much in LEDs to the market and they're not about to revitalize old machines for incandescent bulbs which have probably been scrapped anyway.
Also look at the bigger picture the fixtures currently on the market can't handle incandescents so in order to bring the lamps back someone would have to start making fixtures again and that's not going to happen either.

But it's the same for all old technologies. Large commercial buildings have removed all of their fluorescents for massive energy savings and as far as homeowners are concerned fluorescents are the most hated light source there is. My brother who was an electrician for 21 years got so sick and tired of homeowners calling him and freaking out because they have fluorescent lights in their house. They would say eww it's so ugly 70s and filled with mercury. They flicker and give me a headache. He would get a headache listening to their complaints.

Now HID that's another subject altogether and a technology that's never coming back. It's to expensive for the manufacturers.

Not to sound so negative but the bottom line is the old technology hasn't been made for awhile and will never be made again and that's the bottom line.
We'll all have to accept the new lighting technology just like everything else like digital flat screen TVs and EV vehicles.
 38   Lamps / Modern / Re: CPO-TW 45w on 50w SON driver?  on: June 21, 2025, 04:51:52 PM 
Started by Laurens - Last post by Multisubject
@Laurens
According to this site:
https://www.docs.lighting.philips.com/en_gb/oem/download/cosmopolis/MASTER-CosmoWhite-datasheet.pdf
Your 45W lamp has a voltage of 91V and a current of 484mA. This is very different from the characteristics of 50W SON, which has a voltage of 85V and a current of 760mA.

Unfortunately, this ballast combination is probably going to overdrive the lamp pretty severely (assuming my specs are correct).
 39   Lamps / Modern / Re: CPO-TW 45w on 50w SON driver?  on: June 21, 2025, 04:21:07 PM 
Started by Laurens - Last post by Laurens
You can google lamp data (voltage/current) for both lamps and compare.
Oh i know, but for instance for the SDW drivers there should be some difference in the drivers, despite it (for now) working fine on a SON ballast.
 40   Lamps / Modern / Re: Single-Pin Fluorescent Tubes (Part 2)  on: June 21, 2025, 04:17:41 PM 
Started by Multisubject - Last post by WorldwideHIDCollectorUSA
I remember getting an Advance F20T12 trigger start ballast from a Home Depot store in the USA that also required a circuit interrupting lampholder.
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