Advanced Qualification · A-002 Advanced components and circuits · A-002-008-006
Quelle est l'impédance de sortie d'un amplificateur opérationnel théoriquement idéal?
- ATrès haute
- BExactement 100 ohms
- CExactement 1 000 ohms
- DTrès basse
Correct answer: D — Très basse. Question tirée de la banque officielle d'ISDE.
Why
An ideal operational amplifier acts like a perfect voltage source, meaning it can deliver current to a load without its output voltage dropping, which requires the output impedance to be very low. 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