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The Sackur–Tetrode equation is an expression for the entropy of a monatomic classical ideal gas which incorporates quantum considerations which give a

A beam tetrode, sometimes called a "beam power tube", is a type of tetrode vacuum tube (or 'valve') with auxiliary beam-focusing plates designed to augment

A tetrode transistor is any transistor having four active terminals. There were two types of tetrode transistor developed in the early 1950s as an improvement

Hugo Martin Tetrode (Amsterdam, 7 March 1895 - Amstelveen, 18 January 1931) was a Dutch theoretical physicist who contributed to statistical physics,

meanings, see Tetrode (disambiguation). A tetrode is a vacuum tube having four active electrodes. There are several varieties of tetrode with screen-grid

Willem Danielsz. van Tetrode, known in Italy as Guglielmo Fiammingo (before c. 1530, Delft — after 1587), was a sixteenth-century sculptor of Dutch origin

instability and parasitic oscillations in the tetrode. The pentode is closely related to the beam tetrode. Pentodes were widely used in industrial and

Tetrode, also given as van Tetrode and spelled variously as Tetterode, Tetteroo, Tettero, Thetrode and Tetroe, was a Dutch medieval noble family which

Sackur–Tetrode equation, which he developed independently of Hugo Tetrode. His and Tetrode's names are also combined to name the Sackur–Tetrode constant

fast replacing power triodes due to their greater efficiency. The beam tetrode design of the 6L6 allowed RCA to circumvent Philips' pentode patent.

magnetic core memory. Secondary emission can be undesirable such as in the tetrode thermionic valve (tube). In this instance the positively charged screen

The KT88 is a beam tetrode/kinkless tetrode (hence "KT") vacuum tube for audio amplification. The KT88 fits a standard eight-pin octal socket and has

KT66 is the designator for a beam tetrode vacuum tube introduced by Marconi-Osram Valve Co. Ltd. (M-OV) of Britain in 1937. The KT66 is the direct descendant

in the 1930s. The company also introduced the KT66 "kinkless tetrode" (beam power tetrode). In 1922 the company brought out valves using thoriated tungsten

The 6550 is a high power beam tetrode vacuum tube used mainly as an audio power amplifier. The 6550 was developed by Tung-Sol in 1955 originally for

Soldner Rydberg constant – Johannes Rydberg Sackur–Tetrode constant – Otto Sackur and Hugo Tetrode Sierpiński's constant – Wacław Sierpiński Skewes' number

circuit. It is a type of electron-coupled oscillator (ECO), which uses a tetrode or pentode tube. In an ECO, The screen grid acts as a plate for the triode

from wasting received energy Spark gap C-- Triode D-- Tetrode E-- Pentode or beam power tetrode F-- Hexode G-- Heptode H-- Octode J-- Magnetically controlled

quantum Boltzmann gas are used in a number of cases including the Sackur–Tetrode equation for the entropy of an ideal gas and the Saha ionization equation

German Sackur-Tetrode constant Niels Bohr 1885–1962 Danish Bohr magneton, Bohr radius Edwin Hubble 1889–1953 American Hubble constant Hugo Tetrode 1895–1931

used in amplifying thermionic valves (vacuum tubes) such as the triode, tetrode and pentode, used to control the flow of electrons from the cathode to

beam-tetrode QC05/15 15 W Beam-tetrode QC05/35 35 kW Beam-tetrode QE04/10 10 W Beam-tetrode QE05/40 (6146) 40 W Radiation-cooled output beam-tetrode, popular

amplification device and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible

Ultra-linear electronic circuits are those used to couple a tetrode or pentode vacuum-tube (also called "electron-valve") to a load (e.g. to a loudspeaker)

triodes used for amplification and switching. Additional electrodes create tetrodes, pentodes, and so forth, which have multiple additional functions made

The power amplifier section used a single cathode-biased 6V6 beam power tetrode configured for Class A operation. The amplifier had a single volume control

The 6V6 is a beam-power tetrode, introduced by Radio Corporation of America RCA United States in mid 1937, and still in use in audio applications, especially

negative resistance characteristic. Examples of such devices are some tetrode thermionic valves (or tubes) and the tunnel diode. Using these devices

of power output, is a beam tetrode which RCA referred to as a beam power tube. Although power pentodes and beam tetrodes have some differences in their

technically a four-component electrode device, neither the term tetrode nor the tetrode valve as it is known today had yet appeared. Each grid was able

tube designation EL90) is a miniature 7-pin (B7G) audio power output beam tetrode vacuum tube with ratings virtually identical to the 6V6 at 250V. It was

The 807 is a beam tetrode vacuum tube, widely used in audio- and radio-frequency power amplifier applications. 807s were used in audio power amplifiers

(Russian: Н) - double triode. E (Russian: Э) - tetrode. P (Russian: П) - output pentode, or a beam tetrode. Zh (Russian: Ж) - sharp-cutoff pentode. (also

triode-hexode 6M11 twin triode - pentode 6K11 triple triode 6LF6 beam power tetrode with anode cap 8B10 twin triode - twin diode 12AE10 twin pentode 38HK7

have a very high density e.g. a White dwarf. For an ideal gas the Sackur–Tetrode equation can be written in terms of the quantum concentration as Charles

Lucas van Tetrode, or Tetterode (c.1592 – 1647), was a Dutch Golden Age member of the Haarlem schutterij. He is only known from his portrait painted

different making the designation unique. For example there is a 12AV5 (beam tetrode), 12AV6 (double diode, triode) and a 12AV7 (double triode). Second figure

Valves are high voltage/low current devices in comparison with transistors. Tetrode and pentode valves have very flat anode current vs. anode voltage indicating

at VHF/UHF include the 4CX250B, an example of a twin tetrode would be the QQV06/40A. The tetrode has a screen grid which is between the anode and the

resulting from this interpretation and reminiscent of Mach's principle due to Tetrode, is that elementary particles are not self-interacting. This immediately

The 6P1P (Russian: 6П1П) is a Soviet-made miniature 9-pin beam tetrode vacuum tube with ratings similar to the 6AQ5, EL90 and the 6V6. Because of a different

Transistor tester Tests transistors Tube tester Tests vacuum tubes (triode, tetrode etc.) Wattmeter Measures the power Vectorscope Displays the phase of the

structure, is interposed between the screen grid and the anode (plate) of a tetrode, turning it into a pentode. The suppressor grid is usually connected to

and much smaller than conventional tubes of the day. Triodes and a few tetrodes were made. The tube is made entirely of metal and ceramic. Making nuvistors

Small-signal tetrode F Small-signal pentode H Hexode or Heptode (of the Hexode type) K Octode or Heptode (of the Octode type) L Power tetrode, beam tetrode or power

efficient triode implementations rather than the later and more efficient tetrode implementations. As successor to Western Electric Company Inc (WE) for

Vacuum tube diode Vacuum tube triode Vacuum tube tetrode Vacuum tube pentode Switch, Single Pole/Single Throw

shot effect") in thermionic emission and his invention of the screen-grid tetrode and a superheterodyne method of receiving wireless signals. In 1964 he

recent suggestion suggests an apprenticeship with Willem Danielsz. van Tetrode, known in Italy as Guglielmo Fiammingo, a pupil of Benvenuto Cellini who

The 25L6 is an octal-based vacuum tube of the beam-power tetrode type. It found common application in AC/DC radio receivers - such as those of the All

the Dutch sculptor trained in Benvenuto Cellini's atelier, Willem van Tetrode, called Guglielmo Fiammingo in Italy. Though visitors to Rome like

Elektronska Industrija Niš (Ei). The KT90, or in full, "Kinkless Tetrode 90", is a beam power tetrode and features the same octal socket as its smaller variant

8974 / X-2159 is a power tetrode designed for megawatt power levels in industrial and broadcast applications. The 8974 is an external anode tube made

configuration between a "triode strapped" tetrode and normal tetrode, that connects the extra grid of a tetrode to a tap from the OPT part way between the

the base, making a tetrode transistor, and using special biasing on this second base connection. Alloy-junction transistor Tetrode transistor TRANSISTOR

America. By the 1930s, advances in vacuum tube manufacturing had yielded the tetrode, which had reduced control grid to plate (Miller) capacitance. These advances

Cavity amplifier Diplexer Dipole antenna Dummy load Electronic filter Tetrode Klystron Distortionmeter Field strength meter Oscilloscope Multimeter

parasitic capacitance between the control grid and the plate, creating the tetrode, which resulted in a great increase in operating frequency. The diagram

differences such as the differing electronic characteristics of triode, tetrode, and pentode vacuum tubes, along with their solid-state counterparts such

bipolar transistor, limited commercial use due to high cost and noise. Tetrode point-contact transistor – Point-contact transistor having two emitters

equations Prony equation Rankine–Hugoniot equation Roothaan equations Sackur–Tetrode equation Schrödinger equation Screened Poisson equation Schwinger–Dyson

of the particles in the volume. This results in the extensive Sackur–Tetrode equation for entropy, as derived next. In classical mechanics, the state

heat transfer characteristics in several already popular pentode and beam tetrode vacuum tube designs, including the 6L6GB, the 7189, and eventually the

with an indirectly heated cathode, typically a medium-mu triode, or a tetrode or pentode with a sharp cut-off control grid. Partial rectification of

(frequency conversion). The "tetrode" description, though accurate, does not replicate the vacuum-tube tetrode. Vacuum-tube tetrodes, using a screen grid, exhibit

vacuum (see Vacuum tube). Diode or rectifier tube Amplifying tubes Triode Tetrode Pentode Hexode Pentagrid Octode Microwave tubes Klystron Magnetron Traveling-wave

a solid state version of the dynatron oscillator which normally uses a tetrode thermionic valve (or tube). The tunnel diode showed great promise as an

unijunction transistor was invented as a byproduct of research on germanium tetrode transistors at General Electric. It was patented in 1953. Commercially

The 4-1000A/8166 is a radial-beam tetrode designed for use in radio transmitters. The 4-1000A is the largest of a series of tubes including the 4-65A

North Holland Archives (Noord-Hollands archief). Gerard van Tetrode donated land in 1310 in the centre of Haarlem to build St. John's monastery

15 K and =101.325 kPa 2.241 3968(20) × 10−2 m3·mol−1 9.1 × 10−7 Sackur-Tetrode constant at =1 K and =100 kPa −1.151 7078(23) 2.0 × 10−6 at =1 K and =101

served as altarpiece of this chapel. Wealthy Leiden brewer Willem van Tetrode (not to be confused with the sculptor of the same name) was buried in the

capacities" are not completely canceled. The later development of the tetrode and pentode vacuum tubes minimized the effect of interelectrode capacitances

Glow from the directly heated cathode of a 1 kW power tetrode tube in a radio transmitter. The cathode filament is not directly visible

credit. Further improvements came in 1926 with the introduction of the tetrode valve. In 1939 the outbreak of war spurred receiver development

Continental introduced a more-efficient Doherty-style amplifier based on a tetrode (previous Doherty designs made by Western Electric and Continental used

is too low. This will be a negative voltage under ordinary conditions. Tetrode, pentode etc.: There is some degree of interaction between the grids, and

Eimac 4-250A beam tetrode power tube

charge carrier base transit time (similar to the drift-field transistor). Tetrode transistor Surface barrier transistor A High Frequency Transistor Analysis

modes of triode and tetrode generators at high angles of electron span and large vibration amplitudes. His monograph "Triode and tetrode microwave frequency

temperature, we have which, for α=3/2 is simply a restatement of the Sackur–Tetrode equation. In one dimension bosons with delta interaction behave as fermions

Reverse Conducting Thyristor SCS — Silicon Controlled Switch or Thyristor Tetrode — A thyristor with both cathode and anode gates SCR — Silicon Controlled

The Janskerk (St. John's church) in Haarlem was built on land donated by Gerard van Tetrode in 1310

Where Φ is an undetermined constant, which may be taken from the Sackur–Tetrode equation for an ideal gas to be: This equation expresses A  in terms of

involves the use of four micro electrodes, called 'tetrodes' (different from the vacuum tube Tetrode), though more electrodes may be used. Recording electrodes

particles with lightlike separation vectors. This resulted in the Fokker-Tetrode-Schwarzschild action integral. This kind of electrodynamic theory is often

(~250μs). 2. The voltage change is triphasic. 3. Activity recorded on a tetrode is seen on only one of the four recording wires. In recordings from freely

the device was called a "pliodynatron", with similar properties to a tetrode or pentode tube with significant secondary emission operated in dynatron

ions through sub-microscopic, water-filled channels. Multigate devices Tetrode transistor Pentode transistor Trigate transistors (Prototype by Intel)

1618. Mathias was banned from the city for supporting Adriaen Jacobsz Tetrode and Daniel de Souter when he published 3 contra-remonstrant pamphlets in

cathode (note K, not C) and grid voltages in analyses of vacuum triode, tetrode and pentode circuits. CMOS ICs have generally borrowed the NMOS convention

donations by the local families Berkenrode, Assendelft, van Brederode, Tetrode, Schoten, and Adrichem. Schoten was also the location of a St. Lazarus

pin, 3.8W heater 6V6 Beam Power Pentode, 8 pin, 2.8W heater KT66 Beam Tetrode, 8 pin, 8.2W heater http://museumvictoria.com.au/collections/items/76

splitter arrangements and the "Ultra-Linear" transformer connection for tetrodes) rapidly became widespread. This family of designs remains the dominant

theory can bring to statistical mechanics is the rederivation of the Sackur-Tetrode equation. It results from stacking the missing information due to 4 terms:

triode amplifiers which led to further innovations such as the vacuum tube tetrode. On the other hand, space charge was useful in some tube applications because

pentode section, "H" for a hexode or heptode section, and "L" for a power tetrode or pentode section. The first number identified the base type, for example

Schrot effect in thermionic emission and his invention of the screen-grid tetrode and a superheterodyne method of receiving wireless signals" 1943 Oliphant

plant – Battery (electricity) – Battery eliminator – Bayer filter – Beam tetrode – Beat frequency – Beckman Instruments – Bell Telephone Laboratories –

inverters and drivers. The original output stages used triode-connected KT66 tetrodes, although a 6L6, with slightly lower output, could be used. A notable characteristic

Hughes–Drever experiment Hugo Benioff Hugo Christiaan Hamaker Hugo Rietveld Hugo Tetrode Hull speed Human echolocation Humidity Humphrey Maris Humphreys series

to provide a single stage of voltage amplification, one 6V6 beam power tetrode in the power amplifier section, and a single volume knob and no tone controls

their invention, such devices were known as rectifiers. In 1919, the year tetrodes were invented, William Henry Eccles coined the term diode from the Greek

main clock power amplifier consisting of six 4CX250B metal/ceramic power tetrode tubes running in push-pull/parallel, yielding an output of a kilowatt.

demand for cheaper, higher-performance receivers. The development of the tetrode vacuum tube containing a screen grid led to a multi-element tube in which

(triple or quadruple-gate) is also captured in the short channel model. Tetrode transistor Pentode transistor Risch, L. "Pushing CMOS Beyond the Roadmap"

chemistry Clemens Roothaan and George Hall Sackur–Tetrode equation Statistical thermodynamics Hugo Martin Tetrode and Otto Sackur Sagan equation Cosmology Carl

ullage od- path, way Greek ὁδός (hodos) anode, diode, odometer, pentode, tetrode, triode odi- hate Latin odium odious odont- tooth Greek ὀδούς, ὀδόντος

Schrot Effect in thermionic emission and his invention of the screen-grid tetrode and a superheterodyne method of receiving wireless signals" 1937 Lawrence

A so-called ultra-linear push–pull amplifier uses either pentodes or tetrodes with their screen grid fed from a percentage of the primary voltage on

Tajiri (1923-2009) Henri Teixeira de Mattos (1865-1908) Willem Danielsz van Tetrode (1530-1587) Aert van Tricht (Ca 1492 to 1501-1550) Gerrit van der Veen

divided by the absolute temperature T of the system in this interval. Sackur-Tetrode entropy – the entropy of a monatomic classical ideal gas determined via

unavailable, a number of JCM 800s were factory equipped with the 6550 beam tetrode power valve, a valve with a different tonal character, which not all users

grids. The fourth grid is only necessary when the LEED is used like a tetrode and the current at the screen is measured, when it serves as screen between

transmitter consisted of Hartley oscillators feeding a pair of tetrode amplifier tubes. The tetrodes were switched on and off by a pair of mercury vapour thyratrons

the surface-barrier transistor (1953), the diffusion transistor, the tetrode transistor, and the pentode transistor. The diffused silicon 'mesa transistor'

efficiency is thereby achieved in the final stage. In addition, as the tetrode carrier and peak tubes require very little drive power, a significant improvement

S. Ştefănescu Sabin (unit) Sacharias Jansen Sachs–Wolfe effect Sackur–Tetrode equation Safety of particle collisions at the Large Hadron Collider Saffir–Simpson

castle, Gebhard patronized the Netherlandish sculptor Willem Daniel van Tetrode. Tedtrode died in 1580 while completing some of the work at the Arnsberg

internal energy U, volume V, and number of moles n is given by the Sackur–Tetrode equation: In this expression m the particle mass and h Planck's constant

for the tank circuits of UHF power amplifiers. For instance, the twin tetrode (QQV03-20) 432 MHz amplifier described by G.R Jessop uses a Lecher line

Joris, (1501-1556) Augustyn Verburgh, (1525-1552) Willem Danielsz van Tetrode, (1505-1588) Anthonie van Montfoort, (1533-1583) Jan Gerritsz van Bronckhorst

such as Carad. All these models employed output transformers and beam tetrode or pentode tubes (for increased efficiency). Similar amateur designs were

overall brain rhythms. However, these require invasive procedures, such as tetrode implantation, which does not allow a healthy brain to be studied. Also

impact ionization mechanism unijunction transistor thyristors triode and tetrode vacuum tubes operating in the dynatron mode Some magnetron tubes and other

kilowatts maximum output, its input signal came from a pair of 6L6 audio beam tetrode vacuum tubes (valves, in the U.K.). In battleships, the Secondary Battery

• Termijtelen • Terwindt • Testas • De Famars Testas • Van Tetering • Tetrode • Van Tets • Tetterode • den Tex • Den Tex Bondt • Van Teylingen • Thesingh

Basilica dei Santi Giovanni e Paolo, Venice (url) Willem Danielsz van Tetrode (1505-1588), 4 sculptures : Nude Warrior, Rijksmuseum, Amsterdam (url)