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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 ...
This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, ... KT77 – Similar to EL34, 6CA7; KT81; KT88 = 6550A = CV5220 (12E13, ...
Sovtek is a brand of vacuum tube owned by Mike Matthews's New Sensor Corporation and manufactured in Saratov, Russia. They are often used in guitar amplification and include versions of the popular 12AX7, EL84, EL34, and 6L6 vacuum tubes. Many of the vacuum-tube amplifiers in modern production are factory-fitted with Sovtek valves. [1]
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)
A Mullard EL34 power pentode An EL84 valve made in Russia in the 21st century. ... The valves (vacuum tubes) produced in this period were named with the prefix PM ...
Pages in category "Vacuum tubes" The following 160 pages are in this category, out of 160 total. ... EL34; EL84; EL90; Electron gun; Electron-stimulated luminescence;
The term most commonly applies to a three-grid amplifying vacuum tube or thermionic valve that was invented by Gilles Holst and Bernhard D.H. Tellegen in 1926. [1] The pentode (called a triple-grid amplifier in some literature [ 2 ] ) was developed from the screen-grid tube or shield-grid tube (a type of tetrode tube) by the addition of a grid ...
Some high-power commercial amplifiers use arrays of standard valves (e.g. EL34, KT88) in the parallel push–pull (PPP) configuration (e.g. Jadis, Audio Research, McIntosh, Ampeg SVT). Some home-constructed amplifiers use pairs of high-power transmitting valves (e.g. 813) to yield 100 watts or more of output power per pair in class AB1 (ultra ...
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