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People may also be interested in analog counter part: Magnetic Amplifiers. "I had always believed that first came the vacuum tube, then the transistor, period.
by GregBuchholz 10y ago
People may also be interested in analog counter part: Magnetic Amplifiers.
"I had always believed that first came the vacuum tube, then the transistor, period. But thanks to an old Navy tech manual sent in by a reader, I've discovered a third "lost" entity. This document, unusually passionate and well written for a military tech manual, is their promotional brochure..."
http://teslapress.com/magamp.html http://teslapress.com/magamp.html
https://archive.org/details/MagneticAmplifiers https://archive.org/details/MagneticAmplifiers
https://en.wikipedia.org/wiki/Magnetic_amplifier https://en.wikipedia.org/wiki/Magnetic_amplifier
- Aloha 10y agoThere is a fourth one - the electromagnetical amplifier - essentially a transducer mechanically coupled to a carbon microphone. While not relevant for logic circuits, it would come at the start of that chain.