There was a point a while back I was thinking about ordering generic 100W COBs.
Here's why I'm happy I didn't: https://www.youtube.com/watch?v=_wR_mFWeI6Y (see his 1st video too if you've got the time.)
It was interesting to learn a bit about how the board is built with layers. I haven't seen such a testing for my Vero 29, and wasn't able to find one for the new mid-power Samsung chips either. Still, I have a hunch that the way SMD chips are arranged/constructed should cause less defects of the sort you can see in the video, giving mid-power chips another little advantage.
Not that I have a clue, obviously, I'm learning new things from random youtube videos!
100W COBs / LED arrangement
That was very interesting. I didn't realize that you could get a resistance like that across faulty diodes. Thanks for sharing!
I think the COBs that we use in this niche have tight enough QC and tolerance that the series-parallel arrangement should not cause any issues. I have played around with super-low current and it's really neat when you can look at all the individual diodes lighting on a COB with just a few mA applied.
I think the COBs that we use in this niche have tight enough QC and tolerance that the series-parallel arrangement should not cause any issues. I have played around with super-low current and it's really neat when you can look at all the individual diodes lighting on a COB with just a few mA applied.
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- LED-Curious
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- Posts: 7
- Joined: Sun Nov 26, 2017 10:21 am
- Location: Europe
Clive's video's are always nice 
been watching them for a while now...
he definately knows his stuff about electricity
been watching them for a while now...
he definately knows his stuff about electricity