11   General / Off-Topic / Re: Vacuum Tube Oscilloscope Project: What does this pot do?  on: Today at 09:29:38 AM 
Started by Multisubject - Last post by Multisubject
Thanks! I actually already found a working used transformer on Ebay that was almost exactly what I needed. Except one of the windings that needed to be 5V was 6.3, but it was just for a rectifier so it was easy to replace the type 80 that it asked for in the schematic with a 6AU4 I had.

The transformer also has another winding of probably over 1kV, and I fried my cheap meter trying to measure it  :-X. It isn't used here since the 902 CRT operates at a maximum of only 600V. This transformer was almost certainly used in a scope in the past.
 12   General / General Discussion / Re: EOL Stories  on: Today at 06:38:31 AM 
Started by suzukir122 - Last post by AgentHalogen_87
Best one I had was in my living room light. It takes 5 E14 lamps, originally halogen, but made the switch to LED 6 years ago. The second inning of LED lamps came in Oct 2021. One of them, two months later, went out like a roman candle. It was flickering and buzzing for a minute, before going out and erupting smoke for a solid 5 seconds with a very loud hissing to go along with it!
 13   General / Off-Topic / Re: Vacuum Tube Oscilloscope Project: What does this pot do?  on: Today at 04:20:27 AM 
Started by Multisubject - Last post by RRK
Good luck building this. The circuit is of course not overly complicated, and may be some fun. IMO, the major obstacle is to find some suitable transformer with necessary output voltages. I'd try to use some modern off-the-shelf DC/DC HV converter modules, though impulse noise requires some care, as it can spoil the circuit!

 14   General / General Discussion / Re: EOL Stories  on: Today at 03:12:27 AM 
Started by suzukir122 - Last post by AngryHorse
My most memorable one happened in December 2020, it was a typical working week morning, I was in the shower, it was about 6:30am.
I heard a scream from the kitchen, (not an absolute fear scream), but that scream women do when something makes them jump! 🤣
Getting down stairs I met the missus in the kitchen with a dazed and confused look on her face!
She said there was a loud, electrical pop, a bright flash of blue from the top of the kitchen units, and some form of projectile shoot across the kitchen ceiling!

She then looked back to the point of the flash to see a small plume of smoke rising up above the top of the units! 🤨
The culprit?, I have 12, GU10, LED lamps at the top of the kitchen units, mounted on their side that throws light across the ceiling creating a neat up lighting effect, and it was one of these ‘mini cannons’ that was the cause!
After taking the thing apart, I found one of the capacitors exploded, with all that stringy hairy stuff protruding from the bottom like the rocket flames from Saturn 5! 🤣🤣🤣
This explosion was enough to forcefully eject the plastic cover from the lamp, and send it across the kitchen at questionable speed! 🤪

I’ve never had such an EOL on any other lamp in the house!
 15   General / General Discussion / Re: Simulated MH Aging  on: Today at 02:22:13 AM 
Started by NeXe Lights - Last post by AngryHorse
🤣🤣🤣🤣excellent, that’s a proper EOL test!
 16   Lanterns/Fixtures / Vintage & Antique / Who made these?  on: Today at 12:46:25 AM 
Started by Milwaukeeman2003 - Last post by Milwaukeeman2003
Found these in a video of 1940s Berkeley and found these on the Eastshore highway. Who made these and what light source did they use? I couldn’t possibly imagine that these were incandescent.
 17   Advertisements / Wanted / Re: F15T12 Strip Fixtures  on: December 30, 2025, 11:34:26 PM 
Started by suzukir122 - Last post by suzukir122
I'm back to revive this thread again... there is a possibility that I may be purchasing LED light tables, for use in my upstairs loft.
I of course plan on taking those LED strip lights out and replacing them with fluorescent T12's. Right now, two F15T12 strip fixtures that
can fit HPF Trigger Start ballasts, look to be the best bet... or F14T12 fixtures, same. I'd be using two of my HPF Trigger Start ballasts,
one in each fixture. This idea would be the final lighting addition to my recently completed lighting project in my living room, for the
upstairs loft only though -- no light tables will be used downstairs.
Although undercabinet fixtures might actually work in this case as well, I'm primarily focused on trying to find two F14T12 or F15T12 strip
fixtures that can fit the HPF single lamp Trigger Start ballasts.
 18   General / General Discussion / Re: EOL Stories  on: December 30, 2025, 10:48:27 PM 
Started by suzukir122 - Last post by suzukir122
I've had a somewhat similar occurrence happen with one of my CFL's a few years ago, but this was a result of a broken filament, due to transferring
to a different apartment unit in my apartment complex:
https://www.lighting-gallery.net/gallery/displayimage.php?album=1854&pos=28&pid=227998.
I guess the lamp got bumped around somehow during the move, even though I tried my best to prevent that from happening, but the filament broke off
and there was no EOL protection. That burn mark was the end result. From what I remember, I would not allow it to continue any further. haha... I was
too scared.
 19   General / Off-Topic / Re: Is BT25 gone now?  on: December 30, 2025, 10:24:43 PM 
Started by Baked bagel 11 - Last post by SussexEuroSOX
Thanks!
 20   General / Off-Topic / Re: Is BT25 gone now?  on: December 30, 2025, 10:23:58 PM 
Started by Baked bagel 11 - Last post by Baked bagel 11
Good.
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