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INPUT TUBE [22 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2024-02-22

English

Subject field(s)
  • Vacuum Tubes (Electronics)
  • Amplifiers (Electronics)
DEF

An amplifier in which the output load is in the cathode circuit of an electronic tube and the input is applied between the control grid and the far end of the cathode load.

OBS

cathode follower: term standardized by IEEE.

OBS

cathode follower circuit: term standardized by the International Electrotechnical Commission.

OBS

This type of amplifier has a voltage gain less than unity; it has a high input impedance and a low output impedance; input and output signals are in phase.

OBS

Equivalent transistorized amplifiers are called: emitter follower (pnp and npn transistors) and source follower (FETs).

French

Domaine(s)
  • Tubes et lampes (Électronique)
  • Amplificateurs (Électronique)
DEF

Montage amplificateur dans lequel le signal de sortie est prélevé sur l'impédance cathodique du tube, le signal d'entrée étant appliqué entre la grille de commande et la masse.

OBS

montage à cathode asservie : terme normalisé par la CEI.

OBS

Le montage cathodyne est caractérisé par son impédance d'entrée élevée et sa faible impédance de sortie; les signaux d'entrée et de sortie ne sont pas déphasés et le gain en tension est inférieur à un.

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
  • Amplificadores (Electrónica)
DEF

Tipo de amplificador intermedio o compensador que emplea una válvula termoiónica, en el que el potencial del cátodo "sigue" al de la rejilla.

Save record 1

Record 2 2017-06-27

English

Subject field(s)
  • Semiconductors (Electronics)
  • Electronic Components
  • Conductors and Resistors
DEF

A voltage-controlled semiconductor which has a high input impedance comparable to that of a vacuum tube.

CONT

Field effect transistors are used to replace vacuum tubes in equipment for improved reliability.

OBS

field-effect transistor; FET: term and abbreviation term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Semi-conducteurs (Électronique)
  • Composants électroniques
  • Conducteurs et résistances
DEF

Dispositif à semi-conducteurs commandé par la tension et présentant une impédance d'entrée très élevée, analogue à celle d'un tube à vide.

OBS

Remplace le tube à vide dans certains équipements étant donné sa performance et une sûreté de fonctionnement plus grande.

OBS

transistor à effet de champ : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Campo(s) temático(s)
  • Semiconductores (Electrónica)
  • Componentes electrónicos
  • Conductores y resistencias
DEF

Dispositivo semiconductor, de tres terminales, que actúa como elemento de almacenamiento de carga variable.

Save record 2

Record 3 2013-06-20

English

Subject field(s)
  • Vacuum Tubes (Electronics)
  • Television (Radioelectricity)
DEF

An electron tube that produces on its fluorescent screen an image of their radiation pattern of its photosensitive input surface.

OBS

image-converter tube: term officially approved by the Electronics and Telecommunications Terminology Committee.

French

Domaine(s)
  • Tubes et lampes (Électronique)
  • Télévision (Radioélectricité)
CONT

Le tube convertisseur d’image assure la double conversion de l’image de photons en image électronique pour en faciliter les transformations, puis à nouveau en image photonique visible.

OBS

tube convertisseur d'image : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
  • Televisión (Radioelectricidad)
Save record 3

Record 4 2012-06-04

English

Subject field(s)
  • Television (Radioelectricity)
  • Radar, Radio Guidance and Goniometry
DEF

Small, random, white spots produced on a television or radar screen by inherent noise signals originating in the receiver.

CONT

... noise has its most deleterious effect on reception quality when it occurs in the input circuitry of the receiver, since this is usually where the basic signal-to-noise ratio is established. The generation of noise in this area is principally caused by thermal agitation in resistive input components. When the incoming signal is too weak to override this noise, a visual effect is displayed on the picture tube that is commonly referred to as snow. Although there are other types of noise that produce different visual effects, snow is the most common visual effect.

French

Domaine(s)
  • Télévision (Radioélectricité)
  • Radar, radioguidage et radiogoniométrie
OBS

Ce terme sert à désigner une image très fortement dégradée par le bruit.

Spanish

Campo(s) temático(s)
  • Televisión (Radioelectricidad)
  • Guía radárica, radioguía y radiogoniometría
DEF

Manchitas luminosas de color blanco que aparecen en la pantalla de los televisores [que] se deben a emisiones parásitas.

Save record 4

Record 5 2012-02-17

English

Subject field(s)
  • Vacuum Tubes (Electronics)
  • Radar, Radio Guidance and Goniometry
DEF

In radar practice, a type of gas-filled electron tube that automatically permits transmit signals to reach the antenna while keeping them from the receiver, but allows received signals to reach the receiver easily.

CONT

The radar receiver follows the transmit-receive tube, which shorts the input during the transmitter pulse. Before the tube fires, it allows a spike of energy to pass. Some tubes require a "keep-alive voltage" in order to be able to fire at lower power levels to protect the receiver.

OBS

TR tube: term officially approved by the Electronics and Telecommunications Terminology Committee.

Key term(s)
  • transmit/receive tube

French

Domaine(s)
  • Tubes et lampes (Électronique)
  • Radar, radioguidage et radiogoniométrie
CONT

Tubes de conception particulière prévus pour la commutation ou la modulation dans un guide d'ondes, p.ex. tube TR.

OBS

tube TR : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
  • Guía radárica, radioguía y radiogoniometría
Save record 5

Record 6 2011-10-12

English

Subject field(s)
  • Vacuum Tubes (Electronics)
DEF

A high-vacuum electron tube having a high input impedance(low control-electrode conductance) to facilitate measurement of extremely small direct currents or voltages.

OBS

electrometer tube: term officially approved by the Electronics and Telecommunications Terminology Committee.

French

Domaine(s)
  • Tubes et lampes (Électronique)
OBS

tube électromètre : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
Save record 6

Record 7 2011-09-26

English

Subject field(s)
  • Analytical Chemistry
  • Radiological Physics (Theory and Application)
CONT

Energy spectroscopy. For energy analysis the output current pulse from a PMT [photomultiplier tube] or from a semiconductor detector is often applied to a charge-sensitive preamplifier. The preamplifier produces a voltage pulse with a peak amplitude that is proportional to the total charge in the current pulse, which is proportional to the energy absorbed from the incident radiation. Amplifiers and filters are used to expand the range of the peak amplitude and to shape the signal from the preamplifier, a process that maximizes the signal-to-noise ratio for the system. For energy analysis the peak amplitude of the shaped pulse represents the information of interest. Discriminators and single-channel analyzers(SCA) can be used, following the signal shaping system, to determine the presence of certain energies of detected radiation. A discriminator produces an output logic pulse if it's input signal exceeds a preset threshold level. An SCA produces an output logic pulse if the peak amplitude of it's input signal falls within the energy window that is established with two preset threshold levels.

French

Domaine(s)
  • Chimie analytique
  • Physique radiologique et applications
CONT

[Dans un détecteur fonctionnant en impulsion] La mesure de la hauteur d’impulsion fournit […] l’information énergie puisque celle-ci est proportionnelle aux charges créées dans le détecteur. Ce mode de fonctionnement est utilisé en spectroscopie d’énergie.

Spanish

Save record 7

Record 8 2011-06-01

English

Subject field(s)
  • Vacuum Tubes (Electronics)
DEF

The attenuation that occurs from the radio frequency output terminal to the radio frequency input terminal of an amplifier tube under operating conditions.

French

Domaine(s)
  • Tubes et lampes (Électronique)
DEF

Affaiblissement qui se produit entre les connexions de sortie radiofréquence et les connexions d'entrée radiofréquence d'un tube amplificateur, dans les conditions en fonctionnement.

OBS

Comparer à système d'exploitation.

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
Save record 8

Record 9 2011-06-01

English

Subject field(s)
  • Vacuum Tubes (Electronics)
DEF

The radio-frequency power delivered to the amplifier tube at the input terminal or input reference plane.

French

Domaine(s)
  • Tubes et lampes (Électronique)

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
Save record 9

Record 10 2011-06-01

English

Subject field(s)
  • Telecommunications Transmission
  • Vacuum Tubes (Electronics)
DEF

The ratio of the output power of tube to its total input power, excluding the cathode heating supply power.

French

Domaine(s)
  • Transmission (Télécommunications)
  • Tubes et lampes (Électronique)

Spanish

Campo(s) temático(s)
  • Transmisión (Telecomunicaciones)
  • Tubos de vacío (Electrónica)
Save record 10

Record 11 2011-05-27

English

Subject field(s)
  • Telecommunications Transmission
  • Vacuum Tubes (Electronics)
  • Electrical Circuits and Circuit Breakers
  • Photoelectricity and Electron Optics
DEF

In camera tube, the input luminous flux necessary to obtain a stated signal-to-noise ratio in the output.

DEF

The least input wich produces a satisfactory output.

Key term(s)
  • detector sensitivity
  • open-circuit voltage response
  • detection threshold

French

Domaine(s)
  • Transmission (Télécommunications)
  • Tubes et lampes (Électronique)
  • Circuits électriques et coupe-circuits
  • Photo-électricité et optique électronique
DEF

Dans un tube analyseur, flux lumineux incident nécessaire pour obtenir, à la sortie, un rapport signal à bruit donné.

Key term(s)
  • seuil de détection

Spanish

Campo(s) temático(s)
  • Transmisión (Telecomunicaciones)
  • Tubos de vacío (Electrónica)
  • Circuitos eléctricos e interruptores automáticos
  • Fotoelectricidad y óptica electrónica
Save record 11

Record 12 2011-04-18

English

Subject field(s)
  • Television (Radioelectricity)
DEF

A camera tube in which a charge image corresponding to the optical image input grows in magnitude on the target until neutralised by the scanning beam.

OBS

This occurs in all the camera tubes such as the iconoscope, image iconoscope, orthicon, image orthicon and vidicon which have been successfully used in television services. Storage occurs by virtue of the capacitance of the target and it brings about a considerable increase in the sensitivity of the tube. In fact it was not until the advantage of the storage principle was appreciated that tubes sensitive enough for use in television services became possible.

OBS

storage camera tube: term officially approved by the Electronics and Telecommunications Terminology Committee.

French

Domaine(s)
  • Télévision (Radioélectricité)
OBS

tube analyseur à mémoire : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Televisión (Radioelectricidad)
Save record 12

Record 13 2009-11-09

English

Subject field(s)
  • Atomic Physics
CONT

An Ex-core Startup Neutron Detector for a nuclear reactor comprising : a. a photomultiplier tube. b. a thermal neutron responsive scintillator medium in optical communication with [the] photomultiplier tube at said input end; c. a neutron thermalizer adjacent to [the] scintillator medium whereby neutrons incident upon [the] neutron thermalizer are thermalized prior to passing into [the] scintillator medium...

French

Domaine(s)
  • Physique atomique
CONT

[...] au cours d'une collision, le neutron peut [...] tout aussi bien gagner de l'énergie qu'en perdre. Il s'agit du phénomène de thermalisation. Le phénomène de thermalisation est complexe. Il recouvre différents modes de collision dont l'existence et/ou l'importance dépendent de la nature du milieu de propagation : milieu gazeux, liquide ou solide. Dans le cas d'un gaz, le noyau cible a une vitesse qui suit la distribution de Maxwell-Boltzmann. Dans le cas d'un thermaliseur liquide (eau, eau lourde...) et solides (graphite, béryllium...), le transfert d'énergie avec le neutron incident sont liés à la fois aux mouvements de vibration, de rotation et de translation (degrés de liberté) des molécules ou du cristal [...]

Spanish

Save record 13

Record 14 2007-11-02

English

Subject field(s)
  • Television (Radioelectricity)
  • Vacuum Tubes (Electronics)
DEF

A gradient in output level not consistent with the input to the camera tube.

French

Domaine(s)
  • Télévision (Radioélectricité)
  • Tubes et lampes (Électronique)
DEF

Gradient du niveau de sortie, non conforme à celui de l'entrée du tube analyseur.

Spanish

Campo(s) temático(s)
  • Televisión (Radioelectricidad)
  • Tubos de vacío (Electrónica)
Save record 14

Record 15 2004-10-22

English

Subject field(s)
  • Office Automation
  • Electronic Publishing
  • Information Processing (Informatics)
DEF

An automated, computerized system incorporating an electronic typewriter, a CRT [cathode ray tube] terminal, a printer, memory, and the like, and that is used to input, store, edit, and output text.

OBS

word processor: term standardized by CSA International.

OBS

text processor: term standardized by ISO.

French

Domaine(s)
  • Bureautique
  • Éditique
  • Traitement de l'information (Informatique)
DEF

Système composé d'un clavier, d'un écran, d'une imprimante, d'une mémoire, d'un micro-ordinateur et d'un logiciel de traitement de texte.

OBS

système de traitement de texte : terme normalisé par la CSA International.

Spanish

Campo(s) temático(s)
  • Ofimática
  • Publicación electrónica
  • Tratamiento de la información (Informática)
Save record 15

Record 16 2004-02-04

English

Subject field(s)
  • Electrical Circuits and Circuit Breakers
  • Vacuum Tubes (Electronics)
DEF

The effect on the input impedance of a valve circuit of the internal capacitive coupling between the control grid and the anode of the tube.

French

Domaine(s)
  • Circuits électriques et coupe-circuits
  • Tubes et lampes (Électronique)
DEF

Effet du couplage capacitif interne entre l'anode d'un tube électronique et la grille de commande sur l'impédance d'entrée de la grille de commande.

Spanish

Campo(s) temático(s)
  • Circuitos eléctricos e interruptores automáticos
  • Tubos de vacío (Electrónica)
Save record 16

Record 17 2003-09-25

English

Subject field(s)
  • Vacuum Tubes (Electronics)
DEF

The operation of an electronic tube in such a way that output current flows for appreciably more than half but for less than the whole of the electrical cycle when a pure sinusoidal input signal is used.

French

Domaine(s)
  • Tubes et lampes (Électronique)
DEF

Fonctionnement d'un tube électronique de façon telle que le courant de sortie circule pendant sensiblement plus de la moitié, mais moins de la totalité, du cycle électrique lorsque le signal d'entrée est sinusoïdal pur.

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
Save record 17

Record 18 2002-11-13

English

Subject field(s)
  • Amplifiers (Electronics)
CONT

We have to consider what type of gain device is suitable for this application. Actually the choice is simple : Bipolar devices have too low an input impedance to be useable, and tubes have too little gain to be used in a single stage power amplifier. The only usable device is the power Mosfet, which is a transconductance device like the tube, and has a high input impedance, but operates with enough gain at high enough currents to be driven directly by line-level signal.

French

Domaine(s)
  • Amplificateurs (Électronique)

Spanish

Save record 18

Record 19 1996-05-13

English

Subject field(s)
  • Analytical Chemistry
CONT

Semiconductive Thin Film Detector. Using the known principle that the adsorption and desorption of gases cause a change in electrical conductivity of semiconductors, Seiyama et al. developed a new chromatographic detector for gaseous components.... The current, depending upon the resistance of the film, is converted to voltage by the variable resistance, which is fed without amplification to a recorder. Resistance also adjusts the input voltage of the recorder at desired sensitivity. Using zinc oxide as an example of a typical film material, the conductivity of its film maintains a fixed value when the nitrogen carrier gas is passed at a constant flow rate throught the borosilicate glass tube. When a small amount of another gas or vapor is added to the carrier gas, its conductivity is changed.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 19

Record 20 1991-12-10

English

Subject field(s)
  • Electronics
  • Vacuum Tubes (Electronics)
DEF

A circuit containing a single section of an electron tube or equivalent device or two or more similar sections connected in parallel, push-pull, or push-push; it includes all parts connected between the control-grid input terminal of the device and the input terminal of the next adjacent stage.

French

Domaine(s)
  • Électronique
  • Tubes et lampes (Électronique)
DEF

Ensemble constitué par un élément actif (tube électronique ou transistor) avec ses circuits de liaison.

CONT

Un étage est constitué par un ou plusieurs transistors (ou tubes électroniques) et par les composants nécessaires aux différents circuits de ces éléments. Un appareil électronique peut être considéré en général comme l'association d'un certain nombre d'étages.

CONT

Selon leurs fonctions, on distingue des étages amplificateurs, oscillateurs, changeurs de fréquence, déphaseurs, multiplicateurs de fréquence, détecteurs, discriminateurs, etc.

Spanish

Save record 20

Record 21 1985-11-12

English

Subject field(s)
  • Computer Hardware
OBS

A computer system consisting of major systems components-a central processing unit, memory, input/output interfaces, circuitry, disk drives, cathode ray tube screen and keyboard-all within a single housing.

French

Domaine(s)
  • Matériel informatique

Spanish

Save record 21

Record 22 1976-06-19

English

Subject field(s)
  • Vacuum Tubes (Electronics)

French

Domaine(s)
  • Tubes et lampes (Électronique)

Spanish

Save record 22

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