It may be bad ground, no decoupling capacitor on power lines.
If you use a E-I transformenr,a little gap may help avoid saturation. Put a thin paper in between.
HTH,
Ioannis
It may be bad ground, no decoupling capacitor on power lines.
If you use a E-I transformenr,a little gap may help avoid saturation. Put a thin paper in between.
HTH,
Ioannis
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