Electric Displacement and Electrostatic Energy
https://www.electronics-lab.com/article/electric-displacement-and-electrostatic-energy/
Electric Displacement Around 1837, Michael Faraday, the director of the Royal Society in London, became interested in static electric fields and the effect of various insulating (or dielectric) materials on these fields. He constructed a pair of concentric metallic spheres, the outer one consisting of two hemispheres that could be firmly clamped together. He also […]
Sinusoidal Waveforms
https://www.electronics-lab.com/article/sinusoidal-waveforms/
Introduction Within a period of 10 years at the end of the 19th century, many technological achievements allowed to extend the use of alternating current and overcome the limitations of direct current for the distribution of electricity to the public. In 1882, the transformer is invented in France which eases the distribution of the alternating […]
AC Waveform and AC Circuit Theory
https://www.electronics-lab.com/article/ac-waveform-and-ac-circuit-theory/
Introduction When talking about current or voltage, these signals can be fitted into two main categories : DC and AC. DC states for “Direct Current“, this definition regroup the signals that are constant in time : their amplitude and sign (+ or -) remain unchanged. AC states for “Alternating Current“, these signals are alternating between […]
WattUp – RF based Wireless Charging at a Distance
https://www.electronics-lab.com/wattup-rf-based-wireless-charging-distance/
Recently, many big companies such as Samsung have developed wireless chargers which work by induction. These chargers usually consist of a station which needs to be in contact with the device in order to charge. The station defeats the purpose of being able to move and walk while still charging the device. Energeous, a global […]