Basic Qualification · B-003 Station assembly, practice and safety · B-003-017-006
Apart from efficiency, what is one advantage of a switching (switch mode) power supply over a linear power supply?
- ALower risk of radio frequency noise
- BDifferent simultaneous output voltages
- CSimpler to repair
- DReduced physical dimensions and weight
Correct answer: D — Reduced physical dimensions and weight. From the official ISED question bank, verified word for word.
Why
Switching power supplies operate at very high frequencies, which allows them to use much smaller transformers and components than the heavy, low-frequency transformers found in linear supplies. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account