<span class="searchmatch">photopentodes</span> plural of <span class="searchmatch">photopentode</span> 2016, D. Fujimoto, C. Hearty, “Characterization of the Aging and Excess Noise of a Hamamatsu Fine Mesh Photopentode”...
From photo- + pentode. <span class="searchmatch">photopentode</span> (plural <span class="searchmatch">photopentodes</span>) a pentode whose electrical characteristics are light-sensitive...
(g1) screen grid (g2) suppressor grid (g3) anode (also called: plate) <span class="searchmatch">photopentode</span> thermionic valve kinkless tetrode IPA(key): /pɛ̃.tɔd/ pentode f (plural...