Advanced Qualification · A-002 Advanced components and circuits · A-002-012-008
Aux fréquences VHF et supérieures, lorsque vous devez utiliser une largeur de bande presque égale à celle d'un canal de télévision, un bon choix de filtre serait :
- Aaucune de ces réponses ne convient
- Bla cavité résonante
- Cle filtre Butterworth
- Dle filtre Tchebychev
Correct answer: A — aucune de ces réponses ne convient. Question tirée de la banque officielle d'ISDE.
Why
None of the other answers is correct because resonant cavities, Butterworth, and Chebyshev filters cannot easily provide the very wide bandwidth needed for a full television channel at VHF and higher frequencies. 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