Electronics > Beginners

I dont understand the wattage of these IR leds. Please help !

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soldar:

--- Quote from: james_s on January 20, 2019, 09:52:37 pm --- My experience with specs on this sort of random Chinese stuff is they just make something up, you really can't rely on any of the data.
--- End quote ---

Reminds me of about 40 years ago when audio systems were all the rage and they would come up with tiny systems claiming to put out hundreds of watts, which was clearly impossible and so they would claim it was not "RMS watts" but "musical watts" which was a totally made-up unit and they could claim whatever they liked.

Maybe these LEDs watts are "visual watts". :)

james_s:
Oh they still do that. Somewhere I have a tiny set of amplified PC speakers that proudly proclaim 400 Watts.

"Peak Modulated Power Output" used to be a very common bogus rating too.

glarsson:
PMPO  = "Peak Music Power Output"

james_s:
I've seen both definitions for PMPO. Either way it's a meaningless metric made up by marketers.

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