Advanced Qualification · A-002 Advanced components and circuits · A-002-006-003
Dans quelle partie du cycle d'un signal, un amplificateur de classe AB est-il au travail?
- AMoins que 180 degrés
- BPlus que 180 degrés, mais moins que 360 degrés
- CExactement 180 degrés
- DLe cycle complet
Correct answer: B — Plus que 180 degrés, mais moins que 360 degrés. Question tirée de la banque officielle d'ISDE.
Why
A Class AB amplifier conducts for more than half of the signal cycle but not the whole thing, meaning it operates for more than 180 degrees yet less than 360 degrees. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits is section A-002 of the Advanced exam: Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.
Drill A-002 — free, no account