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:

1. A choke input and capacitor output
2. B choke output and capacitor input
3. C choke input and capacitor input
4. D choke 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: rectifiers, filtering, regulation, switching supplies and their failure modes.

Drill A-004 — free, no account · All A-004 questions