A Deep Dive Into Inductors
https://fed.brid.gy/r/https://hackaday.com/2026/02/05/a-deep-dive-into-inductors/
#Imaginez vous #inductance, que nous appelons aussi #bobine ou #self, avec des #bandes de #couleurs #inscrites sur son #corps (la #partie #cylindrique du #composant) et vous #cherchez à #déterminer sa #valeur #inductive ? #Electro-robot vous #propose une #solution #100% en #ligne pour #calculer sa #valeur et retrouver la #valeur #exacte de l'#inductance en #Henry : Un #calculateur de #code #couleur des #inductances
https://electro-robot.com/electronique/calculateur-de-code-couleur-des-inductances
DIY Loading Coil Shortens Antenna Lengths
#radiohacks #amateurradio #antenna #coil #hamradio #inductance #inductor #loadingcoil #radio #hackaday
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https://www.nature.com/articles/s41598-022-24914-y
"The element realized herein is shown to bear the three required and necessary fingerprints of a meminductor, and its place on the periodic table of circuit elements is discussed by extending the genealogy of memristors to meminductors."
#electronics #circuits #ee #electricalEngineering #memristors #meminducance #inductance #electricity #inductor #electricField
The first intentional memristor was physically realized in 2008 and the memcapacitor in 2019, but the realization of a meminductor has not yet been conclusively reported. In this paper, the first physical evidence of meminductance is shown in a two-terminal passive system comprised primarily of an electromagnet interacting with a pair of permanent magnets. The role of series resistance as a parasitic component which obscures the identification of potential meminductive behavior in physical systems is discussed in detail. Understanding and removing parasitic resistance as a “resistive flux” is explored thoroughly, providing a methodology for extracting meminductance from such a system. The rationale behind the origin of meminductance is explained from a generalized perspective, providing the groundwork that indicates this particular element is a realization of a fundamental circuit element. The element realized herein is shown to bear the three required and necessary fingerprints of a meminductor, and its place on the periodic table of circuit elements is discussed by extending the genealogy of memristors to meminductors.
Cascade Failures, Computer Problems, and Ohms Law: Understanding the Northeast Blackout of 2003
We've all experienced power outages of some kind, be it a breaker tripping at an inconvenient time to a storm causing a lack of separation between a tree and a power line. The impact is generally localized and rarely is there a loss of life, though it can happen. But in the video below the break, [Brady] of Practical Engineering breaks down the Northeast Blackout of 2003, the largest power failure ever experienced in North America. Power was out for days in some cases, and almost 100 deaths were attributed to the loss of electricity.
[Brady] goes into a good amount of detail regarding the monitoring systems, software simulation, and contingency planning that goes into operating a large scale power grid. The video explains how inductive loads cause reactance and how the effect exacerbated an already complex problem. Don't know what inductive loads and reactance are? That's okay, the video explains it quite well, and it gives an excellent basis for understanding AC electronics and even RF electronic theories surrounding inductance, capacitance, and reactance.
So, what caused the actual outage? The complex cascade failure is explained step by step, and the video is certainly worth the watch, even if you're already familiar with the event.
It would be irresponsible to bring up the 2003 outage without talking about the Texas ERCOT outages just one year ago- an article whose comments section nearly caused a blackout at the Hackaday Data Center!
#science #acpower #blackout #capacitance #grid #inductance #outage #powergrid #reactance
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