Comment on USB-PD is a de-facto low-power DC voltage standard, with USB-C being the universal plug. Hurray!
Smokeless7048@lemmy.world 11 months agoyou wrote it? Cool!
I’ve really been loving USB PD, and retrofit into several devices i use. My big next interest is the USB PPS, allowing devices to request extermly minute adjustments to the voltage, instead of just “9v”
A question because I don’t really understand:
Does those “really minute” voltage adjustments really matter for the vast majority of things you can use USB PPS for? I’m sure there are some devices out there that do, but I would think most don’t care too much if the power is 9VDC or even 6VDC or 12VDC for brief periods. Perhaps the slightly increased lifespan might matter or not.
Yea, i do think it will help, primarily with battery charging.
Right now, in order to protect the battery, the phone will request 9v, then step it down as the battery charges, and send a reduced voltage to the battery, so over time the battery might see 9v… 8.95vm 8.9v, 8.85v…
This allows the step down to happen at the charger, instead of in the phone, increasing efficiency, and reducing heat in the phone.
I think there might be an issue with the propensity of people to use random chargers. If it fits, it has to be OK right? I’m not sure one should trust the charger to step down the voltage as it charges a device. Lots of poorly designed aftermarket chargers out there and you won’t be able to make the bad ones all disappear overnight. The device needs to protect itself from the stupidity of the user.
Definitely get what you are saying, but I already trust the charger to take 120-240v AC to 5-48v DC.
Going from 9.0 to 8.85v is a much smaller regulation
lgsp@feddit.it 11 months ago
No, I only wrote the intro of this Lemmy thread. It’s the part that @rusticus@lemm.ee said was AI generated. At least that was my understanding.
I really hope that the hackaday article cannot be confused with ai generated garbage… Or maybe my taste is really bad!