Practical Tips

Parasitic oscillations are a sneaky source of EMI/EMC failures. With the right layout and simple fixes—like reducing gain or breaking feedback loops—you can eliminate emissions without costly redesigns. Learn how to spot and stop these hidden troublemakers in your circuit.

High-quality inductors and capacitors can create dangerous resonant circuits, generating voltage peaks up to Q times the input voltage. This underdamped behavior causes EMI issues, component damage, and circuit malfunctions. Strategic damping with resistors or ferrites provides effective solutions for power integrity problems.

Learn how to quickly test material shielding effectiveness using your VNA and near-field probes. This simple technique compares materials, thicknesses, and frequencies—perfect for EMI/EMC troubleshooting without expensive formal testing equipment.

Why is your EMI filter failing at high frequencies? Component parasitics are the culprit. Self-resonant frequencies transform your low-pass filter into a high-pass nightmare—measure your components to understand why.

For many applications, especially in digital designs, you can see decoupling networks composed of several different (big and small) capacitors in parallel. But sometimes this technique can be dangerous.

You can minimize your EMI/EMC and SI/PI problems by working as slow as possible. This is very well-known advice from many experts, books, and seminars. But many times this strategy is ignored. Why is this idea so important?

Discover the eye diagram, a very useful visual tool to analyze the quality of your connections in digital and high frequency applications.

Could your signal integrity solution be causing the problem? Ferrites typically eliminate ringing, but when improperly selected, they create the very oscillations they're meant to suppress. The secret lies in understanding impedance characteristics—choose wrong, and your clean digital signal transforms into an unwanted rollercoaster.RetryClaude can make mistakes. Please double-check responses.

EMI filter design hinges on critical component placement. Learn how strategic orientation of capacitors and inductors can transform electromagnetic interference performance, potentially solving compliance issues with existing components and minimal design changes.

Want to troubleshoot electronic circuits better? Arturo Mediano says it's all about being able to "see" what's going wrong. The key is looking at your signals in both time and frequency domains, and using the right tools - from basic voltage probes to fancy near-field scanners - to spot and fix those pesky EMI problems.