Answer :
Final answer:
A buck-boost converter is a type of DC-DC converter that can adjust the voltage to be higher or lower than the input voltage, differentiating it from transformers like step-up or step-down variants which modify AC current and only increase or decrease voltage, respectively. The correct option is c.
Explanation:
A buck-boost converter is a type of DC-DC converter that can produce an output voltage that is either higher or lower than the input voltage. It stands in contrast to a step-up transformer, which solely increases the voltage, or a step-down transformer, which solely decreases the voltage.
Transformers are key components in electrical systems; they transform voltages from one value to another and their efficiency often exceeds 99%. Unlike transformers that work with AC current, a buck-boost converter is designed specifically for DC circuits and is frequently used in situations where the battery voltage may be higher or lower than what an electronic device requires. The correct answer to the question 'What is a buck-boost converter?' is c. A type of DC-DC converter.
