14 Nov
2004
14 Nov
'04
7:49 p.m.
Am Sonntag 14 November 2004 23:55 schrieb Christoph Eckert:
Don't know, but a step up converter wouldn't need much power, if the 48V would
only feed some µA.
I guess a phantom powered mic sucks less than 1mA, no?
Somebody knowing please tell us;-)
Karsten
- It has 2 Mic-Ins with XLR and Phantompower all
feed from
the USB-bus, no extra powersupply.
Isn't phantom power 48Volts?
I wonder that the device can get 48V from the USB bus. One
device is allowed to get a maximum of 500mAmpere from the
bus.
USB is 5V. This means, the card has to convert 5V to 48V and
would certainly need more than 5V/500mAmp. Maybe the phantom
power is only available in conjunction with an external power
supply?