EEssential

I needed a capacitor that can withstand over 400V. But what I had were 250V capacitors. So I put two identical capacitors in series. I mo...

This list also appears here . 1. Troubleshooting Analog Circuits (EDN Series for Design Engineers) by Robert A. Pease...

In the course of one's life, there are a few moments of enlightenment that significantly alter one's conception. Here are the some ...

Over the short span of computer history, we saw the main frame computers gave way to the minicomputers, the minicomputers succumbed to the w...

I have a number of PC power supplies that have failed. They are easy enough to replace, but the reasons for failure are unclear. So I dec...

I'm sure the designers thought it was a good idea to build smarts into a lowly notebook AC adapter. My HP notebook AC adapter comes wit...

The power factor is defined as the ratio of real power and apparent power. Real power is consumed to do work (useful or not); apparent power...