On 7/10/2022 6:18 AM, leonard keepers wrote:
Hello group just curious. i have not yet purchased one of these lamps
but i see that they can be powered by usb.? how much of a powered usb
port or hub is needed for such a lamp to work properly. i am guessing if
it is plugged into ones computer it would add more work on the computers
power supply. thank you
Some accessories that power from a USB port include a DC-DC converter
that, because it uses square waves for the process, generate massive RF
noise. My neighbor, W6GJB, traced noise in his shack to USB-powered
speakers.
73, Jim K9YC
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