Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-001-008
Dans un oscillateur dans lequel la rétroaction positive est obtenue par l'intermédiaire d'un seul condensateur connecté en série avec le cristal, l'oscillateur est de type :
- AMiller
- BPierce
- CColpitts
- DHartley
Correct answer: B — Pierce. Question tirée de la banque officielle d'ISDE.
Why
The Pierce oscillator uses a quartz crystal as its frequency-determining element, with positive feedback routed through a single capacitor connected in series with that crystal. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account