On Thu, Oct 5, 2023 at 03:18 PM, Evan Hand wrote:
As Raj suggests, chokes could solve the problem.? You did not say how the HDs are connected.? Shielded cables may also be needed, with chokes on all lines into and out of the HD, including the power lines.
It should be solvable.? It may take installing the HDs in a grounded metal enclosure.
The HD are connected to their external power supply, which doesn't create any problems even if I leave it plugged into the socket. The problems arise when I insert the plug coming out of the power supply cable into the HD. Then the classic USB cable connected to the PC starts from the HD.
But where should I try to put the ferrite coils?
Thank you
