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flukecorporation

What’s all this triplen harmonics stuff?

January 20, 2022 By dherres

Unless your background is in ac power, it’s possible you haven’t run into the term triplen harmonic. Triplen harmonics have to do with the third harmonic. Even-numbered harmonics do not normally exist in power systems due to symmetry between the positive and negative halves of the ac cycle. It is the odd-numbered harmonics that engineers […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: FAQ, flukecorporation

Don’t touch that! Things they don’t teach you in circuits lab

September 9, 2021 By dherres

The domain of most electronics engineers these days is confined to voltage levels ranging from microvolts on up to a few hundred volts. But when electronic equipment fails or there’s a problem with facility wiring, these same engineers may, in a pinch, be called upon to do basic troubleshooting of power levels far beyond their […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: FAQ, flukecorporation

Non-contact voltage true-rms ac/dc clamp meters measure voltage, current simultaneously

April 6, 2021 By Lee Teschler

The new Fluke 377 FC and 378 FC Non-Contact Voltage True-RMS ac/dc Clamp Meters are the only clamp meters that make accurate non-contact voltage measurements without test leads. The Fluke 377 FC and 378 FC True-rms clamp meters use Field-Sense technology to make testing faster and safer, all without touching a live conductor. You get […]

Filed Under: Test and Measurement Tips Tagged With: flukecorporation

Finding fiber-optic cable anomalies

June 16, 2020 By Lee Teschler

fiber-optic cable anomalies

Optical fiber is a form of waveguide. The lateral dimension of a waveguide depends upon the wavelength of the signal conveyed. A waveguide is not capable of carrying a wavelength much larger than its diameter. Optical fibers are characterized by their core diameters. In single-mode fiber, the standard core diameter is 9 μm. Standard multi-mode […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: flukecorporation, megger

Researchers get a charge out of measuring eels with battery powered oscilloscopes

June 3, 2020 By Lee Teschler

Next time you find yourself swimming around with electric eels, try grabbing one and then put the leads of a battery powered oscilloscope on its head and tail. According to University of Central Florida zoology professor Will Crampton, you’ll probably measure a voltage in the 700-V range. Crampton and his associates went to the rivers […]

Filed Under: Featured, Test and Measurement Tips Tagged With: flukecorporation

Checking power line quality with test instruments

October 18, 2019 By David Herres Leave a Comment

The average homeowner probably doesn’t think about the quality of the electrical power coming out of household wall sockets. But that’s not the case for large industrial facilities where capacitive, inductive, and non-linear electrical loads can be large enough to distort the ac waveform. In those cases, electrical power quality becomes an important measurement. Electric […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: FAQ, flukecorporation, tektronix

Fluke test tools and protecting against arc flash

June 19, 2019 By David Herres Leave a Comment

Fluke Corp. has manufactured electrical test and measurement instruments for decades, and these instruments have been well-known for accuracy, durability and great user-friendly interfaces. Maintaining those qualities, Fluke is now emphasizing electrical safety. This emphasis is apparent in Fluke’s new line of electricians’ hand tools, which are designed and built with the idea that after […]

Filed Under: Test and Measurement Tips Tagged With: flukecorporation

The difference between spontaneous emissions and stimulated emissions

February 21, 2019 By David Herres Leave a Comment

The terms spontaneous emission and stimulated emission sometimes get confused. The term thermal emission sometimes gets thrown into the mix as well. Here are the basic definitions to help sort things out and the procedures for measuring these parameters. When we speak of spontaneous or stimulated emissions we are referring to atoms whose electrons are […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: flukecorporation, gentec-EO

Electrical tester calibrator helps comply with new regulatory standards

February 15, 2019 By Lee Teschler Leave a Comment

The 5322A Electrical Tester Calibrator is a multi-device calibrator built to facilitate compliance with exacting international standards such as the UK’s BS7671 17th Edition, IEC/EN Standards, Australia and New Zealand’s AS/NZS 3000 and Chinese verification/calibration regulations for various electrical testers. The 5322A combines many functions into a single instrument, replacing discrete resistors, decade boxes, and […]

Filed Under: Test and Measurement Tips Tagged With: flukecorporation

Mitigating ac motor-shaft voltage and bearing currents

January 31, 2019 By David Herres Leave a Comment

Bearing problems are the greatest single contributing factor in motor failure. Often motor damage happens before bearing wear is noticeable. To avoid expensive repairs and costly downtime, early detection is essential. Proper installation of replacement bearings and correct lubrication are critical. It is well known that insufficient lubrication brings early bearing failure, but many maintenance […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: aegis, FAQ, flukecorporation

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