MAKE A MEME View Large Image Beam tetrode.svg Microscopic view of a beam pentode speculative as only beam tetrodes exits Own 2007-10-03 Arnero Vacuum tube diagrams
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Keywords: Beam tetrode.svg Microscopic view of a beam pentode speculative as only beam tetrodes exits Own 2007-10-03 Arnero Vacuum tube diagrams
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