this post was submitted on 19 Sep 2023
855 points (94.8% liked)
Memes
45189 readers
2017 users here now
Rules:
- Be civil and nice.
- Try not to excessively repost, as a rule of thumb, wait at least 2 months to do it if you have to.
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
The problem isn't the LED itself. The problem is engineers that read the datasheets where it shows which forward current they need. What they forget to think about is that the recommended forward current is for max brightness, so they slap whichever resistor they need, and never give it another thought.
Whenever I design a LED circuit that is only used as an indicator, I always make it 10% or less than recommended, because I do not need to burn away my retina when I test the boards.
Of course that's smart design. You'd think that would be something that becomes immediately obvious when the very first prototype PCB is put out and none of the engineers can look at the damn thing directly...