SignalPrep
Advanced Qualification · A-006 Receivers · A-006-004-005

Dans un récepteur superhétérodyne, le signal FI amplifié est appliqué à l'étage appelé :

  1. Aoscillateur local
  2. Bdétecteur
  3. Camplificateur RF
  4. Dsortie audio

Correct answer: B — détecteur. Question tirée de la banque officielle d'ISDE.

Why

In a superheterodyne receiver, the amplified intermediate frequency signal must be converted back into an audio or data signal, which is the specific job of the detector stage. The full explanation — and one for every question — is in Pro.

Practise this section

Receivers is section A-006 of the Advanced exam: Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.

Drill A-006 — free, no account

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