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  2. Tube socket - Wikipedia

    en.wikipedia.org/wiki/Tube_socket

    Octal sockets were designed to accept octal tubes, the rib in the keyed post fitting an indexing slot in the socket so the tube could only be inserted in one orientation. When used on metal tubes, pin 1 was always reserved for a connection to the metal shell, which was usually grounded for shielding purposes.

  3. 6V6 - Wikipedia

    en.wikipedia.org/wiki/6V6

    6V6 Octal socket basing diagram. 1 - * Unconnected in all versions except for the shell connection of the metal 6V6 2 & 7 - Filament / Heater 3 - Anode / Plate 4 - Grid 2 / Screen Grid 5 - Grid 1 / Control Grid 6 - No connection. Pin normally absent 8 - Cathode & Beam-Forming Plates. The 6V6 is a beam-power tetrode vacuum tube.

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    110–119 – Y8A 8-pin steel tube base; Rimlock B8A; 130–139 – Octal; 150–159 – German 10-pin with spigot; 10-pin glass with one big pin; Octal; 160–169 – Inline wire-ended Pencil tubes; Y8A 8-pin steel tube base; 170–179 – RFT 8-pin; RFT 11-pin all-glass gnome tube with one offset pin; 180–189 – Noval B9A; 190–199 ...

  5. EL34 - Wikipedia

    en.wikipedia.org/wiki/EL34

    The EL34 is a thermionic vacuum tube of the power pentode type. The EL34 was introduced in 1955 by Mullard, who were owned by Philips. [1] The EL34 has an octal base (indicated by the '3' in the part number) and is found mainly in the final output stages of audio amplification circuits; it was also designed to be suitable as a series regulator by virtue of its high permissible voltage between ...

  6. 6L6 - Wikipedia

    en.wikipedia.org/wiki/6L6

    Socket connections; The 6L6 Pinout, metal versions had the shell connected to pin 1. Pin 1 – n.c Pin 2 – Heater Pin 3 – Anode (Plate) Pin 4 – Grid 2 (Screen) Pin 5 – Grid 1 (control) Pin 6 – n.c Pin 7 – Heater . Pin 8 – Cathode & beam-forming plates: Typical class-A amplifier operation; Anode voltage: 350 V: Anode current: 54 mA ...

  7. Octal base - Wikipedia

    en.wikipedia.org/wiki/Octal_base

    Download as PDF; Printable version ... move to sidebar hide. Octal base may refer to: A vacuum tube socket with an eight-pin base; The octal, or base-8, numeral ...

  8. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letters "SQ" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82)

  9. EF86 - Wikipedia

    en.wikipedia.org/wiki/EF86

    The EF86 [1] is a high transconductance sharp cutoff pentode vacuum tube with Noval (B9A) base for audio-frequency applications. It was introduced by the Mullard company in 1953 [2] and was produced by Philips, Mullard, Telefunken, Valvo, and GEC among others. It is very similar electrically to the octal base EF37A and the Rimlock base EF40.