A triode is an electronic amplifying vacuum tube (or thermionic valve in British English) consisting of three electrodes inside an evacuated glass envelope:...
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Vacuum tube (redirect from Radio tube triode)
53 Dual Triode Audio Output. Another early type of multi-section tube, the 6SN7, is a "dual triode" which performs the functions of two triode tubes while...
125 KB (15,976 words) - 22:10, 4 May 2025
List of vacuum tubes (redirect from Directly heated triode)
or pentode, and triode K – Small gas triode or tetrode thyratron L – Single or dual triode, including oscillator triode LD – Triode and diode(s) M –...
329 KB (40,549 words) - 01:42, 6 May 2025
History of the transistor (redirect from Semiconductor Triode)
in the case of digital circuits. The transistor replaced the vacuum-tube triode, also called a (thermionic) valve, which was much larger in size and used...
67 KB (7,592 words) - 06:08, 30 March 2025
A single-ended triode (SET) is a vacuum tube electronic amplifier that uses a single triode to produce an output, in contrast to a push-pull amplifier...
10 KB (1,395 words) - 09:23, 9 February 2024
12AX7 (section Similar twin-triode designs)
12AX7 (also known as ECC83) is a miniature dual-triode vacuum tube with high voltage gain. Developed around 1946 by RCA engineers in Camden, New Jersey...
11 KB (1,191 words) - 09:54, 20 May 2025
Nuvistor (section Dissection of a Nuvistor triode tube)
metal, with a ceramic base. Triodes and a few tetrodes and pentodes were made; nuvistor tetrodes were taller than triodes. Nuvistors are among the highest-performing...
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Audion (redirect from Triode electron tube)
Lee de Forest as a diode in 1906. Improved, it was patented as the first triode in 1908, consisting of an evacuated glass tube containing three electrodes:...
24 KB (2,621 words) - 07:21, 15 March 2025
A double diode triode is a type of electronic vacuum tube once widely used in radio receivers. The tube has a triode for amplification, along with two...
4 KB (677 words) - 20:39, 7 March 2020
Cathode follower oscillator (section Triode)
LC-circuit. A grid-leak couples the grid of the left triode to the LC-circuit. The left triode uses common anode circuit which has high input impedance...
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Pentode (section Comparisons with the triode)
such as the PL36, 27GB5/PL500, PL505 etc. A "triode-pentode" is a single envelope containing both a triode and a pentode, such as an ECF80 or ECL86. The...
14 KB (1,782 words) - 11:53, 20 July 2024
signal. The first practical electrical device which could amplify was the triode vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers...
58 KB (7,150 words) - 08:43, 11 May 2025
- triode KBC32 – Dual diode - triode KC1 – Triode KC3 – Triode KC4 – Triode KCF30 – Triode and remote-cutoff pentode, oscillator/mixer KCH1 – Triode/hexode...
125 KB (15,270 words) - 23:06, 23 December 2024
Engineers Medal of Honor "for his early work on oscillating circuits employing triode tubes" and for his work in information theory (which largely paralleled...
12 KB (1,441 words) - 16:24, 13 July 2024
Valve audio amplifier technical specification (section The single-ended triode (SET) power amplifier)
is a classic push–pull front end, typically followed by a driver (triode) and (triode or pentode) output stage (in ultra linear in many cases) to form...
38 KB (5,587 words) - 12:07, 19 May 2023
who simply put two grids into what would otherwise have been an ordinary triode valve (the bi-grille or bi-grid). Although technically a four electrode...
17 KB (2,513 words) - 16:25, 3 May 2025
for their new invention: "Semiconductor Triode", "Solid Triode", "Surface States Triode" [sic], "Crystal Triode" and "Iotatron" were all considered, but...
37 KB (5,427 words) - 18:03, 18 April 2025
Fluidics (redirect from Fluidic triode)
built from them are quite slow compared to electronic devices. The fluidic triode, an amplification device that uses a fluid to convey the signal, has been...
22 KB (2,354 words) - 06:26, 14 April 2025
JFET (redirect from Triode region (JFET))
in N-JFET due to a small voltage VDS (that is, in the linear or ohmic or triode region) is given by treating the channel as a rectangular bar of material...
21 KB (2,439 words) - 19:44, 3 February 2025
additional grid to the first amplifying vacuum tube, the triode, to correct limitations of the triode. During the period 1913 to 1927, three distinct types...
34 KB (4,311 words) - 08:24, 26 March 2025
miniature nine-pin (B9A base) medium-gain dual-triode vacuum tubes. It belongs to a large family of dual-triode vacuum tubes which share the same pinout (RETMA...
4 KB (420 words) - 02:29, 11 May 2025
The Barkhausen–Kurz tube, also called the retarding-field tube, reflex triode, B–K oscillator, and Barkhausen oscillator was a high frequency vacuum tube...
8 KB (934 words) - 00:52, 21 May 2023
6SN7 is a dual triode vacuum tube with an eight-pin octal base. It provides a medium gain (20 dB). The 6SN7 is basically two 6J5 triodes in one envelope...
7 KB (910 words) - 15:05, 10 December 2023
The type 955 triode "acorn tube" is a small triode thermionic valve (vacuum tube in USA) designed primarily to operate at high frequency. Although data...
6 KB (528 words) - 22:27, 18 November 2023
In electronics, power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier's...
34 KB (5,003 words) - 02:16, 28 April 2025
Electrical ballast (section Ballast triode)
the reference value of 1.0. Early tube-based color TV sets used a ballast triode, such as the PD500, as a parallel shunt stabilizer for the cathode-ray tube...
24 KB (3,013 words) - 23:48, 14 April 2025
Princeton, the 1948 tweed-covered "TV front," used one 6SL7 or 6SC7 dual-triode tube to provide two stages of RC-coupled voltage amplification in the preamplifier...
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ECC81/12AT7, dual triode ECC82/12AU7, dual triode ECC83/12AX7, dual triode ECC88/6DJ8, dual triode 12BH7, dual triode 5751, low-noise dual triode EF86, sharp-cutoff...
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electrode used in amplifying thermionic valves (vacuum tubes) such as the triode, tetrode and pentode, used to control the flow of electrons from the cathode...
6 KB (878 words) - 20:21, 11 January 2023
invented the first practical electronic amplifier, the three-element "Audion" triode vacuum tube in 1908. This helped start the Electronic Age, and enabled the...
68 KB (8,998 words) - 13:14, 7 May 2025