Basic Qualification · B-003 Station assembly, practice and safety · B-003-017-006
En plus du rendement, quel est l'avantage d'une alimentation à découpage par rapport à une alimentation stabilisée linéaire?
- AUn risque moindre de bruit radioélectrique
- BLe choix de plusieurs tensions de sortie parallèles
- CDes réparations plus simples, lorsque nécessaires
- DDes dimensions physiques et poids réduits
Correct answer: D — Des dimensions physiques et poids réduits. Question tirée de la banque officielle d'ISDE.
Why
Switching power supplies operate at very high frequencies, which allows them to use much smaller transformers and components than the heavy, low-frequency transformers found in linear supplies. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account