Tube socket
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Tube sockets are electrical sockets into which vacuum tubes can be plugged, holding them in place and providing terminals, which can be soldered into the circuit, for each of the pins. Sockets are des
Left to right: octal (top and bottom view), loctal, and miniature (top and side view) sockets. An early transistor socket and an integrated circuit socket are included for comparison.
Tube 75 from the 1930s with UX-6 base and top grid cap
Two early tubes with four- and six-pin bases
Because of the ubiquity of the octal socket, many other components used it for their pin configuration including relays (not shown), vibrators (top), crystal oscillators (bottom) and small-signal transformers (not shown)
EL34
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The EL34 is a thermionic vacuum tube of the power pentode type. The EL34 was introduced in 1955 by Mullard, which was owned by Philips. The EL34 has an octal base and is found mainly in the final outp
Tube socket
…Octal, A08, American octal base, Oc-8 8 17.45mm (11/16") circle, equal 45° spacing, 7.8mm spigot 2.36mm originally: RCA IEC 67-I-5a 1935 - present 6CA7/EL34, 6L6/5881, 6SN7, 6V6GT, KT63/KT66/KT77/KT88/KT90, 6550, 7591 3G, 30-39, 300-399 Mazda Octal K8B MO8, Octal-8 GB, MO 8 18.5mm circle, 55,5° between pin…
An EL34 vacuum tube manufactured by Mullard
El 34 sockelschaltbild
An E34L made by JJ Electronics c.2011, using blue glass
Matched EL34 vacuum tubes by Russian manufacturer Svetlana