overbelaste usb porten ¤LØST!¤

[Crisz]

hei!

har søkt litt på google, men finner ingen svar på det jeg skal ha. så det jeg lurer på er om en usb plugg kan overbelastes?

f.eks. en usb hub uten egen strømforsyning som lader 4 ps3 håndkontroller.

hva er det som kjer da? kan den bli overbelastet å bli øderlagt?

takker for svar!

Endret 23. juni 2008 av crisz

[o0]

fra wikipedia:

 

The USB specification provides a 5 V supply on a single wire from which connected USB devices may draw power. The specification provides for no more than 5.25 V and no less than 4.75 V (5 V±5%) between the positive and negative bus power lines.[11] Initially, a device is only allowed to draw 100 mA. It may request more current from the upstream device in units of 2 mA up to a maximum of 500 mA.

 

If a bus-powered hub is used, the devices downstream may only use a total of four units — 400 mA — of current. This limits compliant bus-powered hubs to 4 ports. The host operating system typically keeps track of the power requirements of the USB network and may warn the computer's operator when a given segment requires more power than is available.

 

 

jeg tolker dette som om at usb-porten kutter hvis det blir trukket for mye, men jeg skal ikke si noe sikkert...

[Crisz]

fra wikipedia:

 

The USB specification provides a 5 V supply on a single wire from which connected USB devices may draw power. The specification provides for no more than 5.25 V and no less than 4.75 V (5 V±5%) between the positive and negative bus power lines.[11] Initially, a device is only allowed to draw 100 mA. It may request more current from the upstream device in units of 2 mA up to a maximum of 500 mA.

 

If a bus-powered hub is used, the devices downstream may only use a total of four units — 400 mA — of current. This limits compliant bus-powered hubs to 4 ports. The host operating system typically keeps track of the power requirements of the USB network and may warn the computer's operator when a given segment requires more power than is available.

 

 

jeg tolker dette som om at usb-porten kutter hvis det blir trukket for mye, men jeg skal ikke si noe sikkert...

 

 

elsker dette forumet! takker og bukker for super raskt svar!