General > General Technical Chat

Measuring max output current of a USB port.

(1/9) > >>

balnazzar:
I need to know how much current the usb ports on my computer can output.

How can I put a high load upon them and then measure the current?  :bullshit:

tunk:
Maybe something like these:
https://www.ebay.com/itm/294572711871
https://www.ebay.com/itm/394010597121
Wouldn't know, but you may risk damaging the port.

pcprogrammer:
Do you know the motherboard used in your computer. It might be able to find the specifications for it.

alm:
What is the host? The max power modern USB-C ports on a computer or charger will deliver depends on what the device negotiates with the host. Look up USB power delivery. There were also older standards for up to 5V/3A or so. Just connecting a DMM across the USB port, or something similar, won't get you the maximum current or power.

I imagine there are devices to test USB power delivery, but I doubt they sell for $10.

wraper:

--- Quote from: balnazzar on October 21, 2022, 12:28:41 pm ---How can I put a high load upon them and then measure the current?  :bullshit:

--- End quote ---
No, if there is a proper overcurrent protection, it will turn VBUS off. If there isn't, something likely will fail.

Navigation

[0] Message Index

[#] Next page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod