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Magneto

A blog by FORTUNATA in General

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Curse Of The Pram Covers

Have you ever noticed how people who own old boats suffer due to boat covers? Not that boat covers don't serve a purpose or that they're not well crafted or even attractive. I'm sure some companies make really great pram covers and I know many people who love the idea of having one (you can shelter from the rain while driving your boat, after all).   Even so, I confess to being totally puzzled why boat builders used to make boats with widely exposed areas of the stern at the mercy of torrentia
FORTUNATA

FORTUNATA

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Electron Tubes Vs Semiconductors

Ever wondered what the difference is between a valve or electron tube and a semiconductor? Which is better? What about sound?   The simple difference is the electron tube needs much more voltage to work than does a transistor. Another huge difference is the electron tube diode conducts through free electrons within the tube. That is, whereas in semiconductors the electrons orbit a nucleus of an atom (silicon atoms, for example), with tubes the electrons are free.   Tubes are actually quite s
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FORTUNATA

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Vintage Electronics/Engineering

If this publishes O.K., a few words of introduction: I thought it would be a good idea to do a blog on vintage radio and vintage marine engineering as well. However, with respect to boat engineering it will be less "vintage" and more "eighties" when boaters were keeping it simple with prop-generators, TWC regulators, split-charge battery banks and, yes, large and noisy engines.   As to the radio side, I repair radio equipment from the Thirties, Forties, Fifties and Sixties. I'm not an expert b
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FORTUNATA

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