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THRESHOLD VOLTAGE [10 records]

Record 1 2017-08-25

English

Subject field(s)
  • Electrical Circuits and Circuit Breakers
  • Wind Energy
DEF

Neutral to earth voltage, which is voltage that exists between the system neutral (grounded conductor) and the earth.

OBS

Because one of the current-carrying conductors is connected to the earth, there can be situations where small amounts of electricity can flow to complete a circuit through the earth that is below the threshold that will blow a fuse or trip the circuit breaker in the hot wire. This unintentional flow of electricity is what is referred to as "stray voltage. "

OBS

tingle voltage: term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Circuits électriques et coupe-circuits
  • Énergie éolienne
DEF

Tension de neutre à la terre représentant la tension existant entre le courant de neutre d'un système (conducteur de mise à la terre) et la terre.

OBS

tension picotante : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 1

Record 2 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

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Record 3 2011-06-07

English

Subject field(s)
  • Semiconductors (Electronics)
DEF

A FET [field-effect transistor] in which no device current flows (leakage only) when [gate-to-source voltage] is zero volts.

OBS

Conduction does not begin until [gate-to-source voltage] reaches the threshold voltage.

French

Domaine(s)
  • Semi-conducteurs (Électronique)
DEF

Transistor à effet de champ ayant une conductance sensiblement nulle pour une tension grille-source nulle et dont le canal peut être rendu conducteur par l'application d'une tension grille-source de polarité appropriée.

Spanish

Save record 3

Record 4 2010-12-06

English

Subject field(s)
  • Radiological Physics (Theory and Application)
  • Electronic Measurements
OBS

plateau threshold voltage : term officially approved by the Electronics and Telecommunications Terminology Committee.

French

Domaine(s)
  • Physique radiologique et applications
  • Mesures électroniques
OBS

tension de début du plateau : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Física radiológica (Teoría y aplicación)
  • Medidas electrónicas
Save record 4

Record 5 2003-07-14

English

Subject field(s)
  • Measuring Instruments
  • Electrical Measuring Equipment
CONT

The insulation monitoring devices of the Vigilohm range are designed to : measure the insulation level of the installation; indicate drops in the insulation level below a user-defined threshold. In addition to these basic functions, the Vigilohm System can automatically locate the faulty circuit.... Insulation monitoring devices inject a DC or low-frequency AC voltage between the installation and earth. The insulation resistance is determined by measuring the resulting leakage current. Vigilohm EM9 devices use an indicator light to signal the presence of an insulation fault within the installation.

Key term(s)
  • Vigilohm

French

Domaine(s)
  • Appareils de mesure
  • Appareils de mesures (Électricité)
DEF

Appareil de mesure et de contrôle de l'isolation électrique.

CONT

[...] l'installation électrique se doit d'être fiable, de qualité et surtout évolutive [...] Elle fait appel à une grande diversité de matériel parmi lesquels, un TGBT Prisma étanche équipé d'un jeu de barres Linergy, des disjoncteurs Compact NS pour la protection des moteurs, une batterie de condensateurs Rectimat pour le compensation de l'énergie réactive ou encore des contrôleurs d'isolement Vigilohm. Une installation imposante du fait de la puissance élevée.

CONT

L'armoire électrique de transformation et d'isolement (PSU) : Elle contient les éléments suivants : - Un transformateur élévateur (230, 240 ou 270 Volts) - Un vigilohm avec sonnerie afin de détecter les défauts d'isolement (entrée d'eau) [...]

CONT

Vu la simplicité du réseau de CONAPA, on opte pour le premier type de CPI [contrôleur permanent d'isolement]. Soit un Vigilohm TR22 par exemple.

Spanish

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Record 6 2003-02-26

English

Subject field(s)
  • Electrical Measuring Equipment
  • Measurements of Electricity
CONT

The LMS33460 is an under voltage detector with a 3. 0V threshold and extremely low power consumption. [It] is specifically designed to accurately monitor power supplies. It is especially suited to battery powered systems where low quiescent current and small size are required.

French

Domaine(s)
  • Appareils de mesures (Électricité)
  • Mesures de grandeurs électriques

Spanish

Save record 6

Record 7 2001-02-08

English

Subject field(s)
  • Electronic Circuits Technology
DEF

A critical digital IC parameter; it is the difference between the normal operating logic levels and the threshold voltage with a DCM measured in millivolts, not unusual in IC' s; is likely to switch falsely if used in equipment with a higher electrical noise level.

French

Domaine(s)
  • Technologie des circuits électroniques

Spanish

Save record 7

Record 8 1999-06-29

English

Subject field(s)
  • Electronic Measurements
  • Electronics
CONT

The inherent anti-aliasing characteristics of the floating-diffusion input are particularly beneficial in applications where it is desired to integrate all of the pre-CCD interface electronics onto the CCD monolith itself in a high density format. Noise band-limiting is achieved without the undesirable threshold voltage sensitivity characteristic of the true integrator or "direct injection" mode of charge injection.

French

Domaine(s)
  • Mesures électroniques
  • Électronique
CONT

Un signal étant rarement pur, des harmoniques (Fh) ou des signaux parasites vont se combiner avec la fréquence d'échantillonnage pour donner naissance à des fréquences d'intermodulation [...] Pour éliminer ces fréquences perturbatrices dans la bande utile, il y a lieu de mettre un filtre passe-bas que l'on nomme filtre «antialiasing» ou «antirepliements».

Key term(s)
  • antialiasing

Spanish

Save record 8

Record 9 1989-12-19

English

Subject field(s)
  • Semiconductors (Electronics)
CONT

For PMOS devices the threshold voltage(i. e. the gate-source bias at which a conductive channel is formed between the source and the drain) is in the range of 2 to 5V.

French

Domaine(s)
  • Semi-conducteurs (Électronique)
CONT

A l'interface entre les deux diélectriques il existe des pièges qui sont susceptibles de retenir les charges injectées d'une façon non volatile. On modifie ainsi la valeur de la tension de seuil du transistor MOS (...)

Spanish

Save record 9

Record 10 1989-11-06

English

Subject field(s)
  • Aeroindustry
CONT

A threshold sensor in the analog altitude converter... performs a comparison of the indicated altitude with the self-test referenced altitude voltage and activates a GO/NO-GO status signal.

French

Domaine(s)
  • Constructions aéronautiques

Spanish

Save record 10

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