Rogowski coils (see Sidebar and References 1 and 2 at end) perform passive current measurement and are used in test and measurement devices and power-monitoring activities. Calibration is required to ...

A nondestructive testing technology called eddy current array (ECA) is capable of driving numerous eddy current coils that are positioned next to one another in the same probe assembly. In the probe, ...

The detail that a force exists on a wire carrying a current in a magnetic field has an interesting application when we consider a current carrying loop. When the area vector is at right angles to the ...

High-frequency applications, especially in the area of radio technology, require air coils with a particularly high Q-factor. Specifically adapted to the current market requirements for this area of ...

Over the years, a wide variety of electrical meters has been developed to assist with monitoring and troubleshooting electrical systems. Let's take a look at some of the more common metering devices.

MAY I call attention to the most remarkable electrolytic current interrupter due to Dr. A. Wehnelt, of Charlottenburg, which appears to me to be by far the most important improvement that has been ...