From Wikipedia: “In electronics, a vacuum tube, an electron tube, or valve (British
From Wikipedia: “In electronics, a vacuum tube, an electron tube, or valve (British usage) or, colloquially, a tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.”The above photo is of “later thermionic vacuum tubes, mostly miniature style, some with top cap anode connections for higher voltages.” Eine Zusammenstellung von Elektronenröhren.Von links nach rechts:5676 (Mini-Triode)EAA91 (Doppel-Diode)1T4 / DF91 (Batterieröhren-Pentode)ECC82 (Doppel-Triode)ECF80 (Triode und Pentode in einer Röhre)EZ80 (Doppel-Netzgleichrichterdiode)Wahrscheinlich DY86 (Hochspannungsdiode)EY88 (Leistungsdiode)2SH27L in einem unpassenden Sockel (Russische Pentode) -- source link
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