This new three -phase test instrument addresses the increasing need for three-phase testing capability in electrical distribution substations, renewable power generation stations and industrial ...

I tried the Topdon JS3000 out of the box, but the real test came six months later when I had to dig it out again.

Abstract: Time parameters of electromagnetic relay used in aerospace such as the bound time, the arcing time, the over-travel time and the stability time can effectively describe the contact ...

The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery.