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AMPLITUDE LIMITER [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2004-07-06

English

Subject field(s)
  • Telecommunications Facilities
  • Audio Technology
  • Electronic Devices
DEF

Any device which sets (or tends to set) some boundary value or values upon a signal.

OBS

In particular, a limiter may be a device which, for varying inputs below a certain instantaneous value gives a proportional output, but, for inputs whose instantaneous amplitude is higher than a predetermined value, gives a constant peak output.

French

Domaine(s)
  • Installations de télécommunications
  • Électroacoustique
  • Dispositifs électroniques
DEF

Dispositif destiné à borner les valeurs instantanées atteintes par un signal et donnant par exemple un signal de sortie d'une part proportionnel au signal d'entrée, tant que les valeurs instantanées de celui-ci restent inférieures à une valeur maximale donnée, et, d'autre part, à valeurs de crête constantes, si les crêtes du signal d'entrée dépassent cette valeur maximale.

Spanish

Campo(s) temático(s)
  • Instalaciones de telecomunicaciones
  • Electroacústica
  • Dispositivos electrónicos
CONT

Son limitadores: el conyuntor disyuntor, los disyuntores de máxima y mínima, los fusibles [...].

Save record 1

Record 2 1991-12-02

English

Subject field(s)
  • Television (Radioelectricity)
DEF

A type of frequency discriminator that converts a frequency-modulated signal into an audio signal. It requires a limiter to prevent random amplitude variations of the FM signal from appearing in its output.

CONT

An improved demodulator, known as a phase-shift or Foster-Seely discriminator... is sensitive to amplitude variations, or modulation, as well as to frequency modulation.... Therefore, a limiter should always precede the discriminator. The limiter removes amplitude variations from the FM signal.

French

Domaine(s)
  • Télévision (Radioélectricité)
CONT

Discriminateur de Foster-Seeley [...] Ce discriminateur comporte notamment deux circuits [...] accordés sur la fréquence [...] de la porteuse et couplés par mutuelle induction (couplage lâche). En parallèle avec le second circuit est placé un ensemble formé de deux circuits de redressement; il permet d'obtenir un signal de basse fréquence à partir de la tension engendrée entre les points P et Q.

Spanish

Save record 2

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