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Single-grid amplifying vacuum tube having three active electrodes
A triode is an electronic amplifying vacuum tube (or thermionic valve in British English) consisting of three electrodes inside an evacuated glass envelope:
Triode
Device that controls current between electrodes
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
Vacuum_tube
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 –
List_of_vacuum_tubes
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
History_of_the_transistor
Miniature high-gain dual triode vacuum tube
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
12AX7
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
Double_diode_triode
Late vacuum tube design designed to compete with transistors
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
Nuvistor
Vacuum tube electronic amplifier that uses a single triode to produce an output
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
Single-ended_triode
Vacuum tube with five electrodes
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
Pentode
Guitar amplifier produced by Fender
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
Fender_Princeton
Electronic detecting or amplifying vacuum 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:
Audion
- triode KBC32 – Dual diode - triode KC1 – Triode KC3 – Triode KC4 – Triode KCF30 – Triode and remote-cutoff pentode, oscillator/mixer KCH1 – Triode/hexode
List of Mullard–Philips vacuum tubes
List_of_Mullard–Philips_vacuum_tubes
Thermionic valve for VHF operation
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
955_acorn_triode
Type of vacuum tube
similar to 6AL5, double triode high-mu similar to 12AT7. Designed for FM stereo multiplex service. 6BK11 triple triode. Two of the triodes are similar to 12AX7
Compactron
and plate current. Amplifying tubes containing control grids, such as triodes, tetrodes, pentodes, and beam tetrodes, are represented by families of
Vacuum_tube_characteristics
Solid-state electrically operated switch also used as an amplifier
manufacturers. The thermionic triode, a vacuum tube invented in 1907, enabled amplified radio technology and long-distance telephony. The triode, however, was a fragile
Transistor
Frequency mixer of a superhet radio
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
Pentagrid_converter
WW 1 radio tube
French: Telegraphie Militaire, also marketed as TM Fotos and TM Metal) was a triode vacuum tube for amplification and demodulation of radio signals, manufactured
TM_(triode)
Electronic oscillator
Engineers Medal of Honor "for his early work on oscillating circuits employing triode tubes" and for his work in information theory (which largely paralleled
Hartley_oscillator
Type of field-effect transistor
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
JFET
Type of field-effect transistor
unit area. The transition from the exponential subthreshold region to the triode region is not as sharp as the equations suggest.[verification needed] Criteria:
MOSFET
Dual low-frequency, medium-gain octal triode vacuum tube
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
6SN7
Family of VHF/UHF vacuum tubes
25 V NiCd battery heaters. The 957 is a medium-μ signal triode, the 958 is a transmitting triode with dual, paralleled filaments for increased emission
Acorn_tube
Miniature medium-gain dual-triode vacuum tube
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
12AU7
Type of vacuum pump
pumps: the conventional or standard diode pump, the noble diode pump and the triode pump. A standard diode pump is a type of ion pump employed in high vacuum
Ion_pump
Device to limit the current in lamps
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
Electrical_ballast
Electronic vacuum tube
a type of double vacuum triode for audio power amplifiers. A triple-twin contained two dissimilar, directly coupled triodes in a common envelope. To
Triple-twin
Technical specifications and detailed information on the valve audio amplifier
and plate current. Amplifying tubes containing control grids, such as triodes, tetrodes, pentodes, and beam tetrodes, are represented by families of
Valve audio amplifier technical specification
Valve_audio_amplifier_technical_specification
Electronic oscillator
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
Cathode_follower_oscillator
Device for generating microwaves
this third electrode. This allows the resulting electron tube (called a "triode" because it now has three electrodes) to function as an amplifier because
Cavity_magnetron
Vacuum tube with four active electrodes
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
Tetrode
Solid-state semiconductor device
A TRIAC (triode for alternating current; also bidirectional triode thyristor or bilateral triode thyristor) is a three-terminal electronic component that
TRIAC
American inventor (1873–1961)
invented the first practical electronic amplifier, the three-element "Audion" triode vacuum tube in 1908. This helped start the Electronic Age, and enabled the
Lee_de_Forest
Electronic device/component that increases the strength of a signal
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
Amplifier
Use of a fluid to perform analog or digital operations
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
Fluidics
Bipolar junction transistor operated in the avalanche breakdown region
transistor as a linear amplifier, named Controlled Avalanche Transit Time Triode, (CATT) was described in (Eshbach, Se Puan & Tantraporn 1976). A similar
Avalanche_transistor
Discrete device in an electronic system
definition. Active components include amplifying components such as transistors, triode vacuum tubes (valves), and tunnel diodes. Passive components cannot introduce
Electronic_component
Class of electrical battery
respectively. Later, when the control grid element was added to create the triode tube, it was logically assigned the letter "C" and supplied from a "C" battery
Vacuum_tube_battery
Classification of power amplifier
In electronics, power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier's
Power_amplifier_classes
Twin triode vacuum tube
The 5965 is a miniature twin triode vacuum tube (thermionic valve) "designed for use in high-speed digital computers". According to an MIT Project Whirwind
5965
Model of double triode vacuum tube
The 6DJ8 is a miniature nine-pin medium-gain dual-triode vacuum tube. It is distinguished by its very high transconductance, mostly the result of its frame
6DJ8
the VVA "effect" increases with increasing drive. This is a high-mu dual triode that is generally incorporated into an RC coupled class A audio pre-amplifier
Virtual_Valve_Amplifier
Miniature medium-gain dual triode vacuum tube
nine-pin medium-gain (60) dual-triode vacuum tube popular in guitar amplifiers. It belongs to a large family of dual triode vacuum tubes which share the
12AT7
6Н3П) is a Russian-made direct equivalent of the 2C51 medium gain dual triode vacuum tube. It may be used as an amplifier, mixer, oscillator or multivibrator
6N3P
Vacuum tube
miniature vacuum tube, produced as a combination of two sections - medium-mu Triode and sharp-cutoff Pentode - in one envelope. Each of the sections has a separate
6GH8
First successful type of transistor, developed in 1947
Bardeen, J.; Brattain, W.H. (15 July 1948). "The Transistor, A Semiconductor Triode". Physical Review. 74 (2). American Physical Society: 230–231. Bibcode:1948PhRv
Point-contact_transistor
Family of digital circuits
PMOS transistors have four modes of operation: cut-off (or subthreshold), triode, saturation (sometimes called active), and velocity saturation. While PMOS
PMOS_logic
minute. AM broadcast in the US are spaced at 10 kHz. Inventions of the triode amplifier, motor–generator, and detector enabled audio radio. The use of
History_of_radio
Electronic component that exploits the electronic properties of semiconductor materials
for their new invention: "Semiconductor Triode", "Solid Triode", "Surface States Triode" [sic], "Crystal Triode" and "Iotatron" were all considered, but
Semiconductor_device
Electronic device that emits radio waves
The early Audion (triode) tube is visible at right. One of the BBC's first broadcast transmitters, early 1920s, London. The 4 triode tubes, connected in
Transmitter
Electrode used to control electron flow within a vacuum tube
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
Control_grid
Type of electronic circuit
gives efficiency and distortion that is a good compromise between triode (or triode-strapped) power amplifier circuits and conventional pentode or tetrode
Push–pull_output
Electronic component
the VCR resistor moving out of the linear triode region (or operated in a less than perfectly linear triode region), uneven amplification of the input
Voltage-controlled_resistor
Display used in consumer electronics
by electrons emitted from the cathode filament. Each tube in a VFD is a triode vacuum tube because it also has a mesh control grid. Unlike liquid crystal
Vacuum_fluorescent_display
Valve amplifier
not single triodes, but massive banks of paralleled triodes. Simple OTL amplifiers, for example Atma-Sphere M-60, employ 8 double triodes of 6AS7 type
Circlotron
Electronic systems used on aircraft
two way radio sets were made possible in 1917 (see TM (triode)) by the development of the triode vacuum tube, which were simple enough that the pilot in
Avionics
Combined triode-diode. B (Russian: Б) – Combined diode-pentode. F (Russian: Ф) – Combined triode-pentode. I (Russian: И) – Combined triode-hexode, triode-heptode
Russian_tube_designations
Earliest electronic computer design
confined to the middle of the 20th century. Lee De Forest invented the triode in 1906. The first example of using vacuum tubes for computation, the Atanasoff–Berry
Vacuum-tube_computer
Number of digits needed to express a number in a particular base
required r triodes. (Larger radices required 2r triodes arranged as r flip-flops, as in ENIAC's decimal counters.) So the number of triodes in a numerical
Optimal_radix_choice
Type of solid-state switch
containing a gate structure that can shut down anode current flow TRIAC: Triode for Alternating Current: A bidirectional switching device containing two
Thyristor
Guitar amplifier
1958 model 5F1 featured an 8". The 5E1 and 5F1 circuits used a 12AX7 dual triode in the preamplifier to provide two stages of voltage amplification, and
Fender_Champ
Type of electronic circuit
screen-grid has 0% of the plate's output signal impressed on it), or a triode, in which the screen-grid is connected to the plate (i.e. the screen-grid
Ultra-linear
Visual indicator of the amplitude of an electronic signal
magic eye tube is a miniature cathode ray tube, usually with a built-in triode signal amplifier. It usually glows bright green, (occasionally yellow in
Magic_eye_tube
Oscillating dynamical system with nonlinear damping
ISSN 0024-6107. B. van der Pol: "A theory of the amplitude of free and forced triode vibrations", Radio Review (later Wireless World) 1 701–710 (1920) van der
Van_der_Pol_oscillator
vacuum tube, combining a pentode and triode. Typically, the pentode was used for the input stage, and the triode as a phase inverter. The tube was used
7199
Type of electronic amplifier
third electrode and invented the first electronic amplifying device, the triode, which he named the Audion. This additional control grid modulates the current
Valve_amplifier
Device for producing coherent EM waves in the sub-visible spectrum
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Maser
Type of transistor
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Field-effect_transistor
Topics referred to by the same term
Airport, Alabama — former FAA LID code: 2A3 a Power triode commonly used in Single-ended triode (SET) amplifiers This disambiguation page lists articles
2A3
Twelfth letter of the Greek alphabet
viscosity in fluid mechanics The amplification factor or voltage gain of a triode vacuum tube The electrical mobility of a charged particle The rotor advance
Mu_(letter)
Devices that measure magnetic field strength using the Hall effect
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Hall_effect_sensor
Micro-electronic component
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
System_on_a_chip
Two-terminal electronic component
thermionic diodes included in the tube (for example the 12SQ7 double diode triode), and vacuum-tube rectifiers and gas-filled rectifiers were capable of handling
Diode
Diode that emits light from an organic compound
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
OLED
Gas-filled tube, electrical switch, rectifier
inverters and oscilloscope sweep circuits. One miniature thyratron, the triode 6D4, found an additional use as a potent noise source, when operated as
Thyratron
Extremely sensitive solid-state photodetector
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Silicon_photomultiplier
Type of vacuum tube; early radio detector
in its shipboard receivers until around 1916 when it was replaced by the triode. The Fleming valve proved to be the start of a technological revolution
Fleming_valve
Electron amplifier vacuum tube
In electronics, the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 by Western Electric to amplify telephone
300B
Theoretical transistor
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Nanoscale vacuum-channel transistor
Nanoscale_vacuum-channel_transistor
DC-to-DC power converter with an output voltage greater than its input voltage
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Boost_converter
Musical equipment manufacturer
Train (NT2H) in 2010, which uses two 12AX7 preamp tubes and a 12AU7 dual triode as its power section, and the 50W Night Train 50 (NT50H) in 2011, a two
Vox_(company)
Magnetic effect in insulators between ferromagnets
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Tunnel_magnetoresistance
Method for producing electronic circuits
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Surface-mount_technology
Type of radio receiver
produced by companies such as Crosley. The introduction of the audion (triode) made amplification possible and enabled louder reception, but early vacuum
Superheterodyne_receiver
Medium gain double triode vacuum tube
6N1P (Russian: 6Н1П) is a Russian-made miniature 9-pin medium gain double triode vacuum tube intended for use as a line audio amplifier and cathode driver
6N1P
Assembly of electrodes at either end of an insulated tube filled with gas
relay tubes, dekatrons and nixie tubes. Thyratrons can also be used as triodes by operating them below their ignition voltage, allowing them to amplify
Gas-filled_tube
Diode that allows current to flow in the reverse direction at a specific voltage
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Zener_diode
Electrode where reduction takes place
Two indirectly-heated cathodes (orange heater strip) in ECC83 dual triode tube
Cathode
Early radio receiver component
broadcasting; radio served as a point-to-point text messaging service. Until the triode vacuum tube began to be used around World War I, radio receivers had no
Crystal_detector
Vacuum tube used for amplifying radio waves
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Klystron
Type of high-power semiconductor diode
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
IMPATT_diode
American mystery and crime writer
homage to Lee de Forest, the inventor of the Audion (also known as the triode tube), who is considered to have opened the world to electronic development
Jeffery_Deaver
Semiconductor light source
Octode) Pentode Photomultiplier (PMT) Phototube Tetrode Triode X-ray tube Double diode triode Additron tube Computron tube Micropup RF Backward-wave oscillator
Light-emitting_diode
Type of electronic audio manipulation
normal rated maximum. Valve amplifiers—particularly those using class-A triodes—tend to produce asymmetric soft clipping that creates both even and odd
Distortion_(music)
Analog and digital circuit simulator
White Paper: A New Zobel Network for Audio Get more power with a boosted triode Archive of Micro-Cap website at the Wayback Machine (archived February 19
Micro-Cap
Pictogram used to represent various electrical and electronic devices or functions
MOSFET Enhancement mode, P‑channel MOSFET Vacuum tube diode Vacuum tube triode Vacuum tube tetrode (pin letters not part of symbol) Vacuum tube pentode
Electronic_symbol
The Barkhausen–Kurz tube, also called the retarding-field tube, reflex triode, B–K oscillator, and Barkhausen oscillator, was a high frequency vacuum tube
Barkhausen–Kurz_tube
Simple radio receiver circuit for AM reception
Fleming valve and the triode could also rectify AM signals, crystals were the simplest, cheapest AM detector. During World War I the triode vacuum tube, the
Crystal_radio
South African electrical engineer and industrialist (1887–1948)
Collection of early triode vacuum tubes belonging to American inventor Lee De Forest, the inventor of the triode, from 1920 (Picture from: Hendrik van
Hendrik_van_der_Bijl
Miniature 9-pin dual triode vacuum tube
6Н2П), also sometimes spelled in English "6H2Pi", is a miniature 9-pin dual triode vacuum tube manufactured in USSR, Russia and China with characteristics
6N2P
TRIODE
TRIODE
TRIODE
TRIODE
Girl/Female
Muslim
Infallible. Free.
Surname or Lastname
English (mainly central and southeastern England)
English (mainly central and southeastern England) : patronymic from a personal name (see Hawk 1), or a variant of Hawk 2.
Girl/Female
Hindu, Indian, Tamil, Telugu
Happiness; Rain
Female
English
Old English name HAZEL means "reddish-brown" or "hazel tree." The tree was so-named for the hazel color of its ripe hazel-nuts.
Female
Russian
Variant spelling of Russian Agripina, AGRIPENA means "wild horse."
Girl/Female
Muslim
Shining. Luminous.
Girl/Female
German, Gujarati, Hindu, Indian, Kannada, Kashmiri, Malayalam, Marathi, Sanskrit, Sindhi, Tamil, Telugu
Jewellery; Precious Stone; Gem
Girl/Female
Latin
A nymph.
Boy/Male
Arabic, Muslim
Mercy of Allah
Girl/Female
Hebrew Biblical
Merciful.
TRIODE
TRIODE
TRIODE
TRIODE
TRIODE