Compactron

Compactrons are a type of vacuum tube, which contain multiple electrode structures packed into a single enclosure.

The Compactron was a trade name applied to multi-electrode structure tubes specifically constructed on a 12-pin Duodecar base.

This vacuum tube family was introduced in 1961 by General Electric in Owensboro, Kentucky[1] to compete with transistorized electronics during the solid state transition.

The first portable color television, the General Electric Porta-Color, was designed using 13 tubes, 10 of which were Compactrons.

Integrated circuits (of the analogue and digital type) gradually took over all of the functions that the Compactron was designed for.

New old stock replacements for almost all Compactron types produced are easily found for sale on the Internet.