2019-03-15 - Kenneth Wyatt

Design PCBs for EMI, part 1: How signals move

Part 1 of this two-part article explains the relationship between electrical signals and magnetic fields and how signals move through…

2019-02-08 - Kenneth Wyatt

Review: Tekbox TBCP1 RF current probe

The Tekbox TCBP1 has an attractive price, but has a mechanical limitation not found in more expensive probes.

2019-01-25 - Bob Witte

What’s that signal’s bandwidth?

A signal's bandwidth is related to its rise time because rising edges usually have the signal's highest frequency components.

2018-11-21 - Martin Rowe

Repair: HP 34401A capacitor failure

In another case of failed capacitors, this classic meter needed some power-supply capacitors replaced, and the diodes that came with…

2018-11-07 - Istvan Novak

PCB fixtures improve component measurements

Using PCBs as fixtures improves component characterization measurements over wires and connectors.

2018-10-17 - Amitava Banerjee & Jeetendra Ashok

PCI Express 3.0 needs reliable timing design

Timing plays an essential role in determining the reliability of applications using PCI Express. With an understanding of the impact…

2018-09-25 - David Richardson

Substituting solid tantalum and tantalum polymer capacitors for surface-mount MLCCs

Examining key performance characteristics will help streamline the evaluation process of alternative capacitor technologies for the replacement of multilayer ceramic…

2018-09-21 - Eric Braun , Chiahsin Chang , Jinghai Zhou & Huaifeng Wang

Analysis and simulation of PCB ACR losses for Vcore DrMOS optimization

PCB main-loop ripple current resistive losses are often neglected and overlooked as a switching power supply loss component.

2018-09-14 - Robin Bornoff

Improve accuracy of electrical system thermal simulation with full-circuit 3D modeling

Full-circuit electro-thermal simulation, using an IGBT power inverter as an example, accounts for power dissipation and temperature variations throughout the…

2018-08-21 - Mike McNatt

It’s a wire-wrapped board sabotage

An unexpected discovery leads one engineer to believe his project was sabotaged.