
Originally Posted by
Ioannis
..
So, I would suggest to take cables from all the minus (ground points) of the circuit parts and connect them to a single point where your (-) of the power supply is....
Ioannis
And, from right there, have a bobbin serially connected to GND, thus, all of your circuit will go to GND via that bobbin.
The value of the bobbin is best found by experimenting.
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