Resistors aren’t resistors – at high frequencies, that is. Many designers don’t realize that parasitic elements in real components affect their values. When frequencies reach hundreds of megahertz, ...

A special frequency determined by the values of the resistance, capacitance and inductance refers to the resonance in AC circuits. The resonant frequency point occurs where the inductive reactance of ...

Here’s a step-by-step design of a resonant-coupled inductor employed in a PFC EMI filter that doesn’t impact power factor. Over the past 40 years many of my designs included Power Factor Correction ...