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Surprisingly good bottom-tier green metal halide lampMax23/07/26 at 21:32Tuopeek: Pulsrite does seem to be quite common and manufact...

Surprisingly good bottom-tier green metal halide lampMax23/07/26 at 17:21Drew: Very nice, I remember seeing these throughout ebay...

Westinghouse Lifeguard H38MP-100/DX Mercury LampSammi22/07/26 at 02:09Ria: No idea, to be honest..! Wonder

Testing Different Wire ConnectionsDrew21/07/26 at 23:10Drew: Just did a few more tests:

Control (~1/2" ...

EYE daylight MH lampSammi21/07/26 at 20:32Max: Agreed, and I suspect the production cost of the i...

Westinghouse Lifeguard H38MP-100/DX Mercury LampSammi21/07/26 at 20:30Max: Yeah, you said that in your description already, b...

EYE daylight MH lampSammi20/07/26 at 19:14Drew: These are super cool, love that design. I wish the...

Westinghouse Lifeguard H38MP-100/DX Mercury LampSammi20/07/26 at 14:38Sammi: Well it came to us from across the Pond...

Westinghouse Lifeguard H38MP-100/DX Mercury LampSammi19/07/26 at 22:25Max: That was certainly not a common bulb shape for a m...

EYE daylight MH lampSammi19/07/26 at 22:22Max: Good choice of lamp! You can even run that MT150D ...

Westinghouse Lifeguard H38MP-100/DX Mercury LampSammi19/07/26 at 21:43Tuopeek: Not see many mercury lamps with this type of outer...

Testing Different Wire ConnectionsDrew16/07/26 at 14:00Ria: I use the Wago 221 connectors and they're exc...

Last remaining conventional streetlights 5Max15/07/26 at 01:59Ria: It always seems to find its way down the back of m...

Last remaining conventional streetlights 5Max14/07/26 at 18:47Max: What's wrong with the cold white powder, Ria?...

GE Genura in detailsMax14/07/26 at 18:43Max: That's correct! That radial pattern in the si...

Testing Different Wire ConnectionsDrew14/07/26 at 11:00Tuopeek: Good test. I'd guess some will further degrad...

GE Genura in detailsMax13/07/26 at 14:42Tuopeek: @Ria: Engineers just love exploded diagrams. I reb...

Last remaining conventional streetlights 5Max13/07/26 at 12:29Ria: It's a good photo, but you can keep the white...

GE Genura in detailsMax13/07/26 at 12:28Ria: Exploded..? That doesn't sound very good :po...

GE Genura in detailsMax13/07/26 at 06:34Max: Indeed. Also, what I did not mention is that the b...

Last remaining conventional streetlights 5Max13/07/26 at 06:30Max: Exactly what I thought when I picked this photo se...

GE Genura in detailsMax12/07/26 at 18:00Tuopeek: It goes to show a lot of the build costs in these ...

Last remaining conventional streetlights 5Max12/07/26 at 17:56Tuopeek: Good timing with a nice cooling winter scene whil...

DIY Point-Contact Iron Pyrite DiodesDrew06/07/26 at 14:18Ria: I remember (vaguely..!) building a crystal radio w...

Solar SOXTuopeek05/07/26 at 15:37Max: 30 kHz is not unusual for such circuit, but a tria...

Solar SOXTuopeek03/07/26 at 21:59Tuopeek: The frequency measures at 30kHz with a close to tr...

RLOD#39 (2020.06.28) 2017 Venture HIT250W/HOR/DU/4.5KMax03/07/26 at 15:43Max: Osram was the first lampmaker to introduce this co...

Philips Historische Producten museum Eindhoven (7/53)Max03/07/26 at 15:38Max: 3-colors fluorescent lamps can be made with a sing...

Solar SOXTuopeek03/07/26 at 15:33Max: Those three resistors in series may be there so as...

Philips Historische Producten museum Eindhoven (7/53)Max03/07/26 at 11:29Tuopeek: Can't imagine it's all the easy to manuf...

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