Advanced Qualification · A-004 Power supplies · A-004-003-005
What type of linear voltage regulator is used in applications requiring a constant load on the unregulated voltage source?
- A A shunt regulator
- B A constant current source
- C A shunt current source
- D A series regulator
Correct answer: A — A shunt regulator. From the official ISED question bank, verified word for word.
Why
A shunt regulator works by diverting excess current to ground through a control device, which keeps the total current drawn from the unregulated source steady regardless of the load changes. 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.