XP Resources
Power supply de-rating in practice

In recent years it has become commonplace for some manufacturers to increas ...
Reliability in electronics

What lies behind the figures and what significance should be attached to th ...
Getting More for Less

Examining the power efficiency of medical electronic equipment in a typical ...
The case for custom power supplies in low to medium volume applications

The specification you need, not the one that happens to be available.
Power factor - concisely explained

Difference between VA & Watts, definition of VAR & graphical representation ...
Parallel & series operation technical overview

A helpful technical article that expertly discusses parallel and series ope ...
Guide to lightning transients

Expert technical overview of transients.
Input considerations - voltage, current, power & fuses

A guide to input voltage, input current, power factor and selecting fuses.
Common power supply topologies

Summary of the three most common switched-mode power technologies.
An innovative topology for 24 hour turnaround of custom configured PSUs

A different approach to solving individual system power requirements.
Eliminating snubber circuits in AC-DC power supplies

Implementing silicon carbide diode in PFC boost controllers.
MTBF: misquoted and misunderstood

Important factors when comparing quoted MTBF.