bigclive
patreon
Temu industrial panel indicators
🕑 Added 2024-05-01 01:04:31 +0000 UTCMaybe the low voltage panel indicators are OK, but the higher voltage 220V ones are a bit too basic for comfort. You can actually smell the resistors in them getting hot very soon after switch-on.
When I first got these I forgot that I had ordered some 220V and some 12V ones at the same time. I ended up testing a 12V one at 240V which was loud. There's a link to a short in the description of this YouTube video, where I relived the moment and blew up another indicator deliberately.
Comments
Big Clive
I don't use or recommend their app. I'd be much more concerned about the fact that Amazon have literally got listening devices in people's homes.
Chris
Temu are in court for using privilege escalation to access otherwise protected user data. Government collection no doubt. https://arstechnica.com/tech-policy/2024/06/shopping-app-temu-is-dangerous-malware-spying-on-your-texts-lawsuit-claims/
Gordo
Ahhh, those precious little moments of discovery. While constructing a UV exposure unit for curing 3D resin prints one time, I discovered that Microwave turntable motors come in 30V as well as the 240V variant - a fact I wasn't aware of. They all look the same..
Big Clive
It's the relationship between the voltage and current waveforms. In a perfect world they would match, but with electronic systems they are often very different.
Carleton Wheeler
How is the power factor calculated? I’m not sure what it means.
N H
I picked up a pack of the 24V models for AC power damber indicators, they work just fine on 5VDC and are just brighter on 18VAC (the latter being common in HVAC)
Big Clive
The bare diodes are potted under clear resin. The leads are spot welded, but then soldered at the terminals.
Charles
The bare dice diodes are fascinating; you'd think it would reduce the reliability a lot without any protection for them. Are those resistors spot-welded to the leads from the PCB, rather than soldered?
Frank
"Fulll wave brrridge rectifier-fire-fire!"
