EMI Bites: Handle EMI before it reaches your electronics.
To improve EMI immunity, start by visualizing how unwanted energy can enter your circuit, not just through cables, but also through parasitics.
Schematics cover only part of the design.
The other part is understanding how parasitic elements (capacitive, inductive, and others) form within your system.
Together, the schematic, parasitics, and layout geometry help you see how interference couples into your circuit.
With this understanding, you can take action: add components that either divert the interference, or dissipate its energy.
What truly helps in solving interference issues is thinking in terms of energy coupling into the system.
So, think fields, propagating and interacting with your circuit, not electrons flowing through conductors.
This shift in perspective reveals more potential paths for disruption and broadens your understanding beyond just conductors.
To electromagnetic enlightenment,
Dario
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