QuestenaUn entraînement qui indique quoi revoir ensuite
RechercheCréer un test
Question 399

What is a frequency discriminator?

  1. An FM generator circuit
  2. A circuit for filtering closely adjacent signals
  3. An automatic band-switching circuit
  4. A circuit for detecting FM signalsBonne réponse

Explication

A frequency discriminator is an FM detector. Its tuned circuits convert deviation about the center frequency into a proportional output voltage, which is the recovered audio.

Continuer avec ce test

Commencer l’entraînement
Comprendre ce thème (≈7 min)Retour au test
Question 399: What is a frequency discriminator? · FCC Amateur Extra Class (Element 4) · Questena