How does a DC-DC converter or voltage regulator maintain stable voltage for avionics rails from a 28V bus?

How does a DC-DC converter or voltage regulator maintain stable voltage for avionics rails from a 28V bus?

• A. Uses linear regulation with feedback to adjust output voltage and minimize ripple
• B. Requires no feedback and uses a fixed output
• C. Uses switching regulation with feedback to adjust output voltage and minimize ripple, ensuring a constant rail
• D. Cannot regulate voltage

Answer: (C)