Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-001-006
Une rétroaction positive provenant d'un diviseur capacitif signifie que l'oscillateur est de type :
- APierce
- BHartley
- CMiller
- DColpitts
Correct answer: D — Colpitts. Question tirée de la banque officielle d'ISDE.
Why
A Colpitts oscillator uses two capacitors in series to split the voltage and feed a portion back to the input, creating the positive feedback needed for oscillation. 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