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
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.
Big Clive
2024-06-30 01:16:48 +0000 UTCTemu 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/
Chris
2024-06-29 19:17:44 +0000 UTCAhhh, 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..
Gordo
2024-05-06 16:24:17 +0000 UTCIt'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.
Big Clive
2024-05-04 17:47:24 +0000 UTCHow is the power factor calculated? I’m not sure what it means.
Carleton Wheeler
2024-05-04 02:43:19 +0000 UTCI 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)
N H
2024-05-03 02:24:12 +0000 UTCThe bare diodes are potted under clear resin. The leads are spot welded, but then soldered at the terminals.
Big Clive
2024-05-02 03:39:25 +0000 UTCThe 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?
Charles
2024-05-02 03:13:42 +0000 UTC"Fulll wave brrridge rectifier-fire-fire!"
Frank
2024-05-01 14:12:16 +0000 UTC
