Advanced Qualification · A-004 Power supplies · A-004-004-009
Dans une source d'alimentation stabilisée, les composants qui conduisent le courant alternatif à l'entrée, avant le transformateur, et qui conduisent le courant continu avant sa sortie sont :
- Ades fusibles
- Bdes condensateurs
- Cdes diodes
- Ddes bobines d'arrêt
Correct answer: A — des fusibles. Question tirée de la banque officielle d'ISDE.
Why
Fuses are the only components listed that safely carry alternating current from the wall outlet into the power supply and then direct current after the rectifier stage without blocking the flow. The full explanation — and one for every question — is in Pro.
Practise this section
Power supplies is section A-004 of the Advanced exam: Power supplies: rectifiers, filtering, regulation, switching supplies and their failure modes.
Drill A-004 — free, no account