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 as well as public persona. Beyond a little primary schooling, he was self-educated. His reading of James Clerk Maxwell’s Treatise On Electricity And Magnetism was a revelation. […]
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Answer this 5-question quiz, win a measurement handbook
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 Tektronix company. Now in its 7th edition, Keithley’s soft-cover 240-page engineering handbook is the classic resource for both novice and seasoned engineers. The handbook describes theoretical and […]
Joseph Henry and mutual inductance
Joseph Henry (1797-1878) discovered the phenomenon of mutual inductance independently and more or less simultaneously with Michael Faraday. Because Faraday published his results a little earlier, he received credit for the discovery. But due to the large volume and quality of his published research, Henry gained stature early in life. He was six years younger […]
Power Electronics handbook — Digital Edition
Inside this issue: Designing with GaN power FETs Characterizing power semiconductors Working with wirewound inductors Chokes for EMI/RFI Selecting power supply connector pins Cooling power semiconductors And much more……….
Faraday and his law of induction
Michael Faraday’s knowledge of mathematics was limited to elementary algebra, but he was a brilliant experimenter, able to draw conclusions from his laboratory work and to communicate them to colleagues and the general public. He began his career as a laboratory assistant to the renowned chemist Humphry Davy. In early years, he focused on chemistry, […]
Georg Simon Ohm and the basis for circuit theory
Georg Simon Ohm (1789-1854) was an educator, mathematician and theoretician, but above all he was an experimenter. Ohm’s law, relating electrical force, current and resistance in a circuit, was based on empirical data – careful experiments, measurements and records that he kept. Ohm’s thoroughness was consistent with that of his colleagues and the time in […]
Video: Keysight MSO-X 4054A Oscilloscope Math Overview
A look at Math functions, simple and complex, available in the Keysight 4000-X Series instruments, beginning with add, subtract, multiply and divide and going on to the Fourier Transform view and other advanced functions.
Video: How To Access and View On-Board Demos in the Keysight MSO-X 4054A Oscilloscope
Demos provide a wealth of information regarding accessing and analyzing a variety of analog and digital signals. The demos provide an introduction to debugging and repair operations using the oscilloscope as a visualization tool.
William Sturgeon and his galvanometer
William Sturgeon (1783-1850) is an unfamiliar name in most households, but his experiments and the instruments that he built were central in the annals of electrical engineering. He was an educator as well, with an incisive writing style that engaged the interest of fellow scientists and laypersons. An important year in his life and in […]
André-Marie Ampère and his law
Like many electrical researchers and theoreticians of his time, André-Marie Ampère endured a measure of tragedy and misfortune, in part because of the excesses of the French Revolution. But personal setbacks did not impede the great energy that he brought to his work. In early life, young André-Marie’s benevolent father was a formative, defining influence. […]