Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-003-009
Les oscillations parasites ont généralement tendance à prendre naissance dans :
- Ales étages de sortie audio à gain élevé
- Bles redresseurs à haute tension
- Cles étages mélangeurs
- Dles amplificateurs de puissance RF
Correct answer: D — les amplificateurs de puissance RF. Question tirée de la banque officielle d'ISDE.
Why
Parasitic oscillations are unwanted radio signals that sneak into a circuit, and they happen most often in RF power output stages because these parts handle the strongest signals and highest voltages. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account