SignalPrep
Advanced Qualification · A-002 Advanced components and circuits · A-002-009-005

On doit faire fonctionner un multiplicateur de fréquence en :

  1. Aclasse A
  2. Bclasse C
  3. Cclasse AB
  4. Dclasse B

Correct answer: B — classe C. Question tirée de la banque officielle d'ISDE.

Why

A frequency multiplier needs to create strong, sharp pulses of current to generate the higher harmonics required for the new frequency, and class C operation does this by conducting for less than half of the input cycle. 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

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