Advanced Qualification · A-004 Power supplies · A-004-003-006
How is remote sensing accomplished in a linear voltage regulator?
- AAn error amplifier compares the input voltage to the reference voltage
- BA load connection is made outside the feedback loop
- CBy wireless inductive loops
- DA feedback connection to an error amplifier is made directly to the load
Correct answer: D — A feedback connection to an error amplifier is made directly to the load. From the official ISED question bank, verified word for word.
Why
Remote sensing works by running a feedback wire from the error amplifier directly to the load, allowing the regulator to measure the exact voltage arriving at the device rather than at the power supply itself. 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