A central concept in magnetism is the domain, discovered in 1906 by Pierre-Ernest Weiss. He theorized that in any magnetically permeable material, a large number of mostly microscopic regions existed as separate walled-off entities. In each of these entities, called domains, the atomic moments align in parallel when magnetized. But the alignment of individual domains […]
Test and Measurement Tips
Current probe kit facilitates safe 480-V panel connected load studies
The CCPK-6 Cabinet Current Probe Kit enables routine panel capacity studies to be performed in 480-V panels – without the need to open or power down the panel. The kit includes a four-phase, 6-in-diameter MicroFlex current probe assembly rated at 4,000 A, a thru-panel cabinet adapter/connector, and an exterior jumper cable to connect the METSyS […]
LTE V2X comm software supports V2X development modules
The LTE V2X PC5 Communications Software MX725000A now supports the Cohda Wireless Communications Module MK6C Evaluation Kit (EVK). The cost-effective solution provides automobile OEMs and Tier-1 suppliers with an efficient tool to conduct required functional and regressions tests to evaluate C-V2X PC5 communications functions in devices and systems used in connected autonomous vehicles (CAVs). Anritsu […]
OpenVPX chassis platform sports version 220-mm deep
A new chassis for extra deep OpenVPX 6U boards allows up to 16 slots of 220-mm boards at a 1.0-in pitch or 14 slots at a 1.2-in pitch. The enclosure also facilitates an optional mix of various slot pitches as well as card guides for either air or conduction-cooled boards. Versions for extra deep 3U […]
The difference between Robert Bunsen’s burner and a gas stove
Jointly Robert Bunsen and Gustav Kirchhoff invented the spectroscope, which they used to identify spectra produced by sodium, lithium and potassium when they were heated to incandescence. This was possible only because previously with a lab assistant Bunsen had perfected a gas torch that did not emit interfering light. Their Bunsen burner has remained in […]
When to measure conductivity instead of resistivity
Resistivity and its inverse, conductivity, are different from the more familiar metrics, resistance and its inverse, conductance. Resistivity is applicable to types of materials. For example, glass and carbon have specific resistivities whereas a particular carbon resistor of a given length, diameter and temperature has a specific resistance. In a nutshell, resistance is defined as […]
Instrument road test: The Liquid Instruments Moku:Pro
Liquid Instruments, an Australian company (there is also a U.S. office near San Diego), is offering a new diagnostic and product development tool that enhances the ability of laboratories and educators to see ever deeper into waveforms of interest. Previous instruments were Moku:Lab and Moku:Go. While these units were robust diagnostic engines, Moku:Pro puts it […]
Data logger features 1 kV isolation, 50 kHz sampling
A new and improved high-voltage, isolated DAQ called the Model DI-4730 builds on the widely used DI-730 series. Featuring up to 16-bit A/D resolution, stand-alone data logging capability and a channel expansion option, allowing the daisy chaining of the DI-4730 with other DI-4000 series products. The DI-4730 features eight analog inputs with programmable measurement ranges […]
Barcode scanner input option loads and runs electrical safety test sequences
A handheld barcode scanning feature is available for the advanced QT Enterprise PC-based Electrical Safety Software package. QT Enterprise software provides a clean and intuitive means for creating and modifying a virtually unlimited number of electrical safety testing procedures for use with Vitrek’s widely used V7x and 95x Series of high-performance Electrical Safety (hipot) Testers […]
Programmable dc supplies include wireless remote sense feature
The new Intelligent Laboratory Series (iLS) of programmable dc power supplies feature an industry-leading small footprint and high-power density. The iLS600, iLS600-R and iLS1500 sport programmable capability with best-in-class measurement accuracy and a patented wireless remote sense feature that significantly reduces noise in a wide range of test and measurement applications. Designed for both benchtop […]