Advanced Qualification · A-004 Power supplies · A-004-002-005
There are two types of filters in general use in a power supply. They are called:
- Achoke input and capacitor output
- Bchoke output and capacitor input
- Cchoke input and capacitor input
- Dchoke output and capacitor output
Correct answer: C — choke input and capacitor input. From the official ISED question bank, verified word for word.
Why
Power supplies use filters to smooth out the bumpy voltage from the transformer, and the two main designs are named for the very first part the electricity hits after that transformer. The full explanation — and one for every question — is in Pro.
Practise this section
Power supplies is section A-004 of the Advanced exam: Power supplies: rectifiers, filtering, regulation, switching supplies and their failure modes.
Drill A-004 — free, no account