Maker Pro
Maker Pro

Analog/Digital supply / ground ?

J

John Woodgate

Jan 1, 1970
0
(in said:
once there was a serious 60Hz hum due to power AC
on the board, but that was fixed with an inline filter.

How on earth do you cure 60 Hz hum with an in-line filter?
 
K

KR Williams

Jan 1, 1970
0
Rather than a solid plane I use grid planes, like a printed faraday
shield.

The advantage being?
I keep analog and digital grounded together, and if there's
audio or rf, their planes are connected to the others via a 47uH to
100uH inductor. Its still one ground, but with some control. Never a
problem, although once there was a serious 60Hz hum due to power AC
on the board, but that was fixed with an inline filter.

???
 
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