1 AC vs DC Switching Demonstration with Arcs
Cited as a vivid demonstration by John Ward of why direct current arcs far worse than alternating current across contacts, and why switch ratings differ.
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2 recommended videos. Channel on YouTube
Cited as a vivid demonstration by John Ward of why direct current arcs far worse than alternating current across contacts, and why switch ratings differ.
A detailed John Ward fume extractor project, suggested as a more capable and ambitious option than simple computer fan builds.