Advanced Qualification · A-002 Advanced components and circuits · A-002-003-003
Quel composant peut acheminer l'électricité d'un émetteur négatif à un collecteur positif lorsque le voltage à la base devient positif?
- AUn transistor PNP
- BUn transistor NPN
- CUn varactor
- DUne triode à vide
Correct answer: B — Un transistor NPN. Question tirée de la banque officielle d'ISDE.
Why
An NPN transistor conducts current from its emitter to its collector when a positive voltage is applied to its base, acting like a switch that turns on with a positive signal. 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