raspberrypi

3167 readers

3 users here now

Community about the single-board computers, micro-controllers and related projects.

https://www.raspberrypi.com/

Other RaspberryPi communities on Lemmy

founded 4 years ago

MODERATORS

testman@lemmy.ml

Chargers or power supplies -- which ones to use? (lemmy.world)

submitted 9 months ago by GustavoM@lemmy.world to c/raspberrypi@lemmy.ml

2 comments fedilink hide all child comments

Is there any difference from one another? I keep hearing that using chargers is absolutely a no-go and that power supplies are much safer and better overall. Do you guys confirm this?

Thanks in advance.

top 2 comments

sorted by: hot top controversial new old

[–] dmention7@lemm.ee 0 points 9 months ago (1 children)

Not all USB power supplies are rated for the current the rpi requires (i forget the number off hand). Anecdotally I had nothing but trouble using a name brand charger supposedly rated for the correct current, which disappeared the instant I switched to a $15 power supply specifically sold for rpi.

For the minor cost and potential headaches of brownouts and unexpected shutdowns, and given that you are asking the question, I would absolutely go with one made for an rpi.

[–] Successful_Try543@feddit.de 0 points 9 months ago* (last edited 9 months ago)

The general difference is, a charger will try to keep the current constant and therefore slightly vary the voltage which may harm the equipment when used as a power supply. A dedicated power supply will try to keep the voltage constant, i.e. independent of the current the hardware is taking.