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1

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hysteresis loop

Steinmetz and magnetic hysteresis

Charles Proteus Steinmetz was born April 9, 1865, the day Lee sent a message to Grant announcing his willingness to surrender, thus ending the American Civil War. Steinmetz…

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1

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VIDEO: Using the Tektronix TCP0030A Current Probe with the Tektronix MDO3104 Digital Storage Oscilloscope

The Tektronix TCP0030A current probe extends the functionality of Tektronix 3000 and 4000 Series oscilloscopes so that they are capable of measuring and displaying current as well as…

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1

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VIDEO: Spectrum Analyzer capability of the Tektronix MDO 3104 Digital Storage Oscilloscope

The Tektronix MDO 3104 is a six-in-one instrument that includes a built-in spectrum analyzer. We look at a high-frequency signal from the built-in arbitrary frequency generator.

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1

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volta's pile

Where would we be without these electrical experiments?

The World Congress on Engineering in London, England is billed as a catalyst for innovation and an annual benchmark for measuring the industry’s evolution. To mark the event,…

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handheld multimeter

Basic motor testing with multimeters and ammeters

When an electric motor fails to start, runs intermittently, runs hot, or continually trips its overcurrent device, there my be a variety of causes. Sometimes the trouble lies…

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waveguide featured

Basics of waveguides

Monday, March 23, 2015

There is something almost comical about a waveguide – the notion that electromagnetic signals or usable power could pass through a hollow pipe and that techniques appropriate to…

oliver heaviside

Oliver Heaviside and Maxwell’s equations

Friday, March 6, 2015

Oliver Heaviside’s life, spanning the years 1850 to 1925, began and ended in squalid surroundings. He was never entirely free of the dark melancholy that characterized his private…

keithley handbook

Answer this 5-question quiz, win a measurement handbook

Thursday, March 5, 2015

What’s your test IQ? Answer this five-question quiz and be entered to win one of 20 Low Level Measurement Handbooks graciously donated to us by Keithley Instruments, a…

VFD simple schematic

Variable Frequency Drives: Viewing the DC Bus

Thursday, September 25, 2014

By David Herres In the field of motion control it’s often necessary to vary the speed of an electric motor and even reverse its direction of rotation. When…