power question?

[ozeanschutz]

just received a raspberry pi model B for christmas, and have a issue with the power source. I bought a 5v 1amp power supply, and it runs the Pi just fine but thats it. What is the max power that can be run through it with out killing the system??

[klricks]

When power is connected via the mirco USB about 750mA is the max for the RPi + all connected devices.
Go above that and the built in fuse F3 will increase in resistance and begin to choke off the power. The RPi and/or USB devices will them become unstable.

[FLYFISH TECHNOLOGIES]

Hi,

What is the max power that can be run through it with out killing the system?

To stay on the safe side, you can:
- connect two USB devices with max 100mA consumption each and
- sink 15mA per GPIO pin, where the max overall sum is 50mA

To use USB devices exceeding 100mA, or more of them, attach them to powered USB hub.
To control circuits/deivces with GPIO pins that request more than 15mA per signal and/or 50mA in total, add a dedicated circuits or board(s) that "amplify" these GPIO currents.


Best wishes, Ivan Zilic.