Advanced Qualification · A-002 Advanced components and circuits · A-002-005-011
Lequel, parmi les suivants, est un composant de type PNPN?
- ADiode PIN
- BDiode Schottky ("hot carrier")
- CDiode Zener
- DRedresseur commandé au silicium ("SCR")
Correct answer: D — Redresseur commandé au silicium ("SCR"). Question tirée de la banque officielle d'ISDE.
Why
A Silicon controlled rectifier (SCR) is the correct choice because it is built from four alternating layers of silicon, creating a P-N-P-N structure that acts like a switch you can turn on with a small signal but cannot turn off easily. 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