Anti-interference measures for capacitive coupling (magnetic field coupling)

See Electrical and Electronic Measurement Technology (2nd Edition)
P244

capacitive coupling

1. Use electrostatic shielding to isolate interference from electric field coupling

2. Optimize layout design and reduce coupling capacitance

   (Increase the distance between capacitor plates; reduce the effective area of ​​capacitor plates)

3. Designing filters for common-mode shoot-through current

magnetic field coupling

1. Reduce the area S of the induction loop as much as possible

2. Increase the coupling distance r

3. Measuring instruments are placed in areas with weak magnetic fields

4. Use magnetic shielding to cut off magnetic coupling paths