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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is subthreshold operation?
💡 Hint: Think about the function of voltage in a MOSFET.
Question 2
Easy
Give an example of energy harvesting.
💡 Hint: What devices use renewable energy sources?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary benefit of subthreshold operation?
- A) Increased speed
- B) Lower power consumption
- C) Higher voltage requirements
💡 Hint: Consider what the goal of low-power design is.
Question 2
True or False: Energy harvesting interfaces can convert ambient energy into electric power efficiently.
- True
- False
💡 Hint: Think about the role of renewable energy.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a low-power sensor using subthreshold operation. If V_{GS} is decreased from 0.5V to 0.2V, calculate the percent change in current output, given I_0 = 10µA and n = 1.5. What design implications does this have for the sensor?
💡 Hint: Use the current equation to find values before and after the change.
Question 2
If a thermal energy harvesting interface outputs 200mW at 80% efficiency, how much power can it theoretically supply from a heat source? Discuss how this informs design decisions for low-power devices.
💡 Hint: Think about efficiency when calculating source power.
Challenge and get performance evaluation