*Question G7A08:
Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?*  

*Correct Answer is  C: High-frequency operation allows the use of smaller components*  

### AI Response: (may contain errors)  

A switchmode power supply (SMPS) operates by rapidly switching the input voltage on and off, which allows it to efficiently convert power with less heat generation compared to a linear power supply (LPS). 

### Correct Answer: C
**High-frequency operation allows the use of smaller components.**

- **Explanation**: 
  - SMPS operates at high frequencies (typically tens of kHz to several MHz), which allows the use of smaller inductors and capacitors. This is because the energy storage requirements decrease as the frequency increases, leading to a more compact design.

### Why the Other Choices are Incorrect:

- **A: Faster switching time makes higher output voltage possible**  
  - **Incorrect**: While faster switching can improve efficiency, it does not inherently allow for higher output voltages. The output voltage is determined by the design and feedback mechanisms of the power supply, not just the switching speed.

- **B: Fewer circuit components are required**  
  - **Incorrect**: SMPS may require additional components such as feedback circuits, filters, and control circuits to manage the high-frequency operation, which can lead to a more complex design compared to LPS.

- **D: Inherently more stable**  
  - **Incorrect**: Stability depends on the design and feedback mechanisms of the power supply. While SMPS can be designed to be stable, they are not inherently more stable than LPS. In fact, they can be more susceptible to noise and require careful design to ensure stability.

### Summary
- SMPS are compact due to high-frequency operation, allowing smaller components.
- The other options do not accurately reflect the characteristics of switchmode power supplies compared to linear power supplies.