https://amperatubes.com/learn/ New and updated guides on vacuum-tube circuit design: biasing, loadlines, SPICE simulation, push-pull, single-ended triode, output transformers, troubleshooting and more. From Amperatubes. en Sat, 23 May 2026 12:00:00 GMT Amperatubes static export https://amperatubes.com/og-image.png https://amperatubes.com/learn/ https://amperatubes.com/learn/day-zero/ https://amperatubes.com/learn/day-zero/ Your very first step into electronics. Interactive guide covering Ohm's law, power, Kirchhoff's laws, and series/parallel circuits — no prior knowledge needed. Sat, 23 May 2026 12:00:00 GMT Vacuum tube electronics Jean-Michel Falligan Devergne https://amperatubes.com/learn/tube-renaissance/ https://amperatubes.com/learn/tube-renaissance/ Why vacuum tubes endure — the golden age, transistor takeover, audiophile revival. Timeline explorer and first-amp quiz. 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Wed, 20 May 2026 12:00:00 GMT Vacuum tube electronics Jean-Michel Falligan Devergne