curiosity teardown: UV sterilization lights
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- Опубликовано: 5 окт 2024
- I picked up some interesting stuff on a recent free giveaway weekend.
Let's take a look inside these UV sterilization lights
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This isn't the only way to do it.
It's probably not the best way to do it.
But it's how I did it.
![Natanael Cano - Amor Eterno [Official Video]](http://i.ytimg.com/vi/EO4prCs6WpM/mqdefault.jpg)
When the plague first started I was selling lights like this and then realized that the cards were more profitable.
I had developed a system for bathrooms which worked the exact opposite of the white lights.
When the occupancy sensor doesn't detect a person for 60 seconds it would turn off the white lights and turn on UVC lights for sanitizing the bathroom.
Oh and I forgot to add that I've taken apart two USB powered nail polish curing lights that my wife and daughter no longer use. One is definitely UV, but the other one is quite white with a hint of UV.
You have organized free days. On Vancouver Island (Mid Island area), you just put it out on the curb any day of the week and stick a Free sign on it. You would be lucky if they don't take the sign also. Nice haul.
That happens here too, but the cit set up specific days so there isn't a constant pile of crap on the front boulevard.
legacy.winnipeg.ca/waterandwaste/recycle/giveawayWeekend.stm
I usually see these in Goodwill stores for .99.
That's cool. One day I plan on repurpose the Microcontrollers I have lots of these brand devices. Maybe I should start filming my teardowns too. Sometimes I search before I teardown anyway.
Chinese "sterilizing" units can be anything from blue led to 405nm usually. Unlike 254nm sterilizing lamps they parobably do nothing. It seems in rare cases you may get 365nm UV-C too (that is also not harsh enough to sterilize).
The other problem is power, most tiny UV leds output perhaps 20mW or less which is not that much. Quite different from something like mercury vapor lamps that you can get in 20W or so with not much money. Ones that do sterilize well, will also make most plastic very brittle over time. I'd never use one for my phone.
I have one small handheld 'bar' style, usb or 4 AAA batteries, it erases UVproms in 10 mins, ( as with all UVC caution is advised)
Hey again fellow 'pegger. I have a handheld unit with a clear UVC fluorescent tube powered by 4 AAs. I don't use it, but I'm a light freak so I couldn't pass it up. Forget where I got it. Maybe Dollarama or Dollar Tree?
I remember that on our local news they said to buy such products with caution because not all uv-c will kill germs. Have you ever heard that before?
A lot of so called UVc leds are actually just purple with very little if any UVc
As far as I can tell, these ones don't have much (if any) visible spectrum light.
Obviously I didn't look directly at them, but they didn't noticeably cast any light onto surfaces, and my camera wasn't able to see any illumination from them.
The first circuit board seemed a bit over the top! Then you revealed the second board.... Unless there are other features these unit do, I'm baffled at the amount of components populating these boards.
Will they harden that UV-cure adhesive? What about erasing an EPROM?
I'm hoping they will work with epoxy. once some arrives. I'll be trying that experiment.
The wand could be good for curing solder mask or UV glue.
UVC only goes from 200 to 280 nanometers and it's not appropriate for UV curing resin/masking.
You want UVA which is 315 to 400 nm.
@@charlesurrea1451 my resin curing light has both I guess.
It has two types of LED's in it.