🔍 Key Concepts

• Switching regulator vs linear regulator efficiency and how excess voltage is handled • Heat dissipation and power loss in linear regulators • Typical real‑world reasons designers choose switching supplies despite their complexity

💭 Think About

• When a regulator drops voltage from a higher DC level to a lower one, what happens to the extra power in a linear regulator versus a switching regulator? • In battery‑powered or high‑power systems, which type of regulator is usually preferred and why? • Look at each choice and ask: is this statement uniquely true or is it either incorrect, incomplete, or too broad?

✅ Before You Answer

• Compare power in vs. power out for linear and switching supplies: what becomes of the difference? • Check whether a linear regulator can work directly from high‑voltage AC without a transformer or rectifier stage. • Ask if any option makes an absolute claim (like "nearly all applications") that seems unrealistic in real design practice.