Unusually safe Chinese eBay lights
Added 2023-11-18 16:11:41 +0000 UTCI was almost hoping this power supply was going to be terrible inside, but it actually seems to be made to local safety standards.
It took a while to reverse engineer the primary side circuitry, because the chip isn't one I recognise and I didn't get any clues from the number on the IC. Even a search for a cloned original didn't find any with a matching pinout.
It does have some hackability for reducing the current delivered to the LEDs, and unlike many high-street versions here, it actually has the memory chip for storing the last setting.
It could be viable to buy a string of these just for the power supply if you have a matching two wire 30V set that defaults to flashing effects or has a failed power supply.
https://www.youtube.com/watch?v=ajnw_b8FBRU
Comments
There's a discussion of the EU (rather than UK) version of the power supply at https://github.com/arendst/Tasmota/discussions/14016. Tasmota is open-source software for ESP devices, so this thing might have hidden tricks up its sleeve.
2023-11-30 06:24:20 +0000 UTCVery cool and thank you Big Clive. Sometimes it's nice when you get stuff that's compliant and decent so as to offer a contrast to the spicy dangerous stuff. The cutout around the 10 ohm resister is interesting. My first thought was for making it fit in more of a streamline fashion but yea, the failure of such won't make a metallic dead short track between the live and neutral. Nice. Thanks for sharing.
Dave Frederick
2023-11-19 06:01:23 +0000 UTCI think this is the first electronics item I seen you feature that has the new UK CA logo, but not a CE logo.
Seán Byrne
2023-11-18 22:54:15 +0000 UTC
