Power semiconductors

What is the main role of power semiconductors?

  1. ASwitching or converting high voltages and currents to control power efficiently
  2. BStoring tiny signals
  3. CConverting light into electrical signals
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Answer: A. Switching or converting high voltages and currents to control power efficiently

Power semiconductors are devices for efficiently controlling and converting large amounts of power by switching, for example to drive motors or convert supply voltages. Storing data is the role of memory, and converting light into electrical signals is the role of image sensors and photodiodes.

  • A. Correct. They control and convert large amounts of power efficiently.
  • B. Storing data is the role of memory.
  • C. Converting light into electrical signals is the role of photodetectors.
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More Power semiconductors questions

  1. What is the conduction loss of a power MOSFET with an on-resistance of 10 mΩ carrying 10 A?
  2. What is the main purpose of attaching a heat sink to a power device?
  3. How many switching devices does a typical three-phase inverter for driving a three-phase motor use?
  4. In power circuits and the like, what is the small resistor placed in series in the current path to measure current called?
  5. Why is a switching power supply more efficient than a linear power supply, which operates its transistor linearly?