What Happened to Magnetic Amplifiers? The Iron-Core Controllers That Worked Without Transistors

#TechnologyHistory #VintageElectronics #ForgottenTechnology What happened to Magnetic Amplifiers, the remarkable iron-core devices that controlled electrical power without transistors? Once used in early computers, military systems, and industrial equipment, these rugged devices helped shape modern electronics before being pushed aside by semiconductor technology. But why did such a reliable invention disappear from the spotlight? In this documentary, we explore the fascinating history of magnetic amplifiers, from Ernst Alexanderson's early innovations to their role in World War II, Cold War missile systems, and pioneering computers. Discover how saturable reactors and magnetic logic circuits worked, why engineers trusted them in demanding applications, and how Seymour Cray helped develop magnetic computing technology. We also uncover the surprising competition between magnetic amplifiers and transistors, including the Magstec and Transtec experiments that helped shape the future of computing. From UNIVAC computers and the space program to 1990s PC power supplies, discover how this forgotten technology survived long after the transistor revolution. If you enjoy forgotten inventions, vintage electronics, early computing history, and the engineering breakthroughs that shaped our world, this is a story you won't want to miss. 👍 Like this video if you enjoy exploring the history of forgotten technology. 💬 Leave a comment: Do you think magnetic amplifiers deserved a bigger place in computing history? 🔔 Subscribe for more documentaries about forgotten electronics, historic machines, groundbreaking inventions, and the technologies that built the modern world. #MagneticAmplifiers #SaturableReactors #EarlyComputers #MagneticLogic #ElectronicsHistory