It was a thermionic vacuum tube; inside were a central cathode, ten anodes, and ten " spade " electrodes.
2.
Chaffee was awarded the IEEE Medal of Honor in 1959 . He was best known for his work on thermionic vacuum tubes.
3.
In a thermionic vacuum tube, an electrically heated electrode " boils " off free electrons, which jump across a gap, drawn by a voltage applied to another electrode.
4.
It operated similarly to the thermionic vacuum tube diode, but the gas in the tube ionized during forward conduction, giving it a much lower forward voltage drop so it could rectify lower voltages.
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