Advanced Qualification · A-002 Advanced components and circuits · A-002-003-009
Le rapport alpha d'un transistor bipolaire est égal à :
- Abêta x (1 + bêta)
- Bbêta x (1 - bêta)
- Cbêta / (1 - bêta)
- Dbêta / (1 + bêta)
Correct answer: D — bêta / (1 + bêta). Question tirée de la banque officielle d'ISDE.
Why
Alpha measures how much of the current entering a bipolar transistor's emitter actually reaches the collector, and it is always slightly less than one. 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