tetrode
/ˈtɛtrəʊd
/noun
A thermionic valve having four electrodes.He was the one I was working with and I asked him if he could maybe build some tetrodes for us to experiment with....
- Power tetrodes are also sometimes used in amateur radio and industrial applications.
- The three-pole array therefore acts as the feedback element stabilizing the operating point of the tetrode.
Origin
Early 20th century: from tetra- 'four' + Greek hodos 'way'.