Is my love of bright LEDs causing pops?

Started by Toy Sun, March 21, 2022, 03:16:51 PM

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Toy Sun

Oh man, think I've been blowing it....

Most folks spec a 2kΩ to 4kΩ (4k7Ω popular) current limiting resistor for LEDs. But I love bright! So I've typically used 300Ω, which is OK per my calculations. Never blown an LED.

But now I'm realizing that maybe this is causing a lot of pops? I got 'em, but didn't really worry about it because of how I use pedals (at home, fooling around). Now thinking about putting  a few on a board and playing out - tracking down my pops.

Do I need to increase my CLRs, in general?

Thanks,
John

antonis

Yes, in general.. :icon_wink:

Or try ultra bright LEDs of low working current..

Or utilize some special LED anti-pop configuration..
(e.g. split CLR and wire a 10μF or so cap between splitted resistors junction and GND..)
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

Toy Sun

Thanks for the quick reply - it's not the hardest fix in the world, I'll try and report back.

idy

With ultrabrights I hear people say 10k and I settled on 8.2k.