page_title: Beam tetrode
hierarchical_section_title: Beam tetrode
caption_attribution_description: Octal-base power w:vacuum tube cut open. I took this picture of an artifact in my possession. --agr 20:56, 30 November 2005 (UTC)
context_page_description: A beam tetrode, sometimes called a "beam power tube", is a type of tetrode vacuum tube with auxiliary beam-focusing plates designed to augment power-handling capability and help reduce unwanted emission effects. These tubes are usually used for power amplification, especially at audio-frequency.
context_section_description: A beam tetrode, sometimes called  a "beam power tube", is a type of tetrode vacuum tube (or 'valve') with auxiliary beam-focusing plates designed to augment power-handling capability and help reduce unwanted emission effects. These tubes are usually used for power amplification, especially at audio-frequency.
caption: Inside of a beam tetrode tube with anode cut open.  The beam plates are the silver coloured structures to the left and right
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