[power on the usb frm pc!!!]

Yes that's right ! I've just looked at my config and it says :
"Maximum current available : 500mA"
thanks for this cool tip !

[power on the usb frm pc!!!]

Hello JayKool_56,

All I know about the USB ports of PCs is that they only deliver 5V  :-[ that's not very high to make a PSU !

And for the current, i don't know exactly but i think it might be 100mA.

May this could help ...

[basics of electrical supply]

Hi Shekhar,
As said by audioguru, the neutral is effictively connected to ground in the transformer. This is made to allow the differential interruptors to work when a leakage appears in the circuit.

[looking 4 etap power station]

Hi nalen,

I've found a link to get a demo CD from http://www.etap.com/demo.htm

Wish this could help you