e-PassiveBlog

Inductors are fundamental components in electronic circuits, used extensively for their ability to store energy in a magnetic field. The...

Source: Powersystems design article Christopher Hare, Coilcraft, Inc. explains class-D audio amplifier output filter design and optimization. Careful component selection...

Ceramic disc PTC components are universally used for overcurrent circuit protection purposes. The principle of their function is relatively simple....

This article provides a practical introduction to how transformers and solenoids work, their key equations, parasitic effects, and typical applications...

Resistors in power and signal circuits rarely see pure DC; they are often stressed by pulses, surges and elevated temperatures...

The article explains basic definition of inductance, impedance and inductive losses. Inductors are not just abstract L symbols in schematics but real...

This article elaborates on design and calculation of basic DC/DC power converters. The post is based on Würth Elektronik‘s “DC/DC Converter Handbook”...

Magnetic-core selection determines the achievable inductance, saturation margin, power loss, thermal performance and EMI behaviour of inductors and transformers. A...

Magnetic flux density, magnetic flux and Faraday–Lenz law explain why a voltage appears across an inductor when its current changes....

The voltage coefficient of resistance (VCR) is a key non‑linearity parameter of high‑value resistors that can quietly dominate error budgets...