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Consider the following statements: Switched mode power supplies are preferred over the continuous types, because they are 1. Suitable for use in both ac and dc 2. More efficient 3. Suitable for low-power circuits 4. Suitable for high-power circuits Which of these statements are correct?

Consider the following statements: Switched mode power supplies are preferred over the continuous types, because they are 1. Suitable for use in both ac and dc 2. More efficient 3. Suitable for low-power circuits 4. Suitable for high-power circuits Which of these statements are correct? Correct Answer 2 and 3 only

Switched Mode Power Supply:

It is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a DC or AC source (often mains power), to DC loads, such as a personal computer, while converting voltage and current characteristics. It is suitable for low power circuits.

It uses a dc to dc switching converter switched at high frequency. The following devices can be used as switching mode DC power supplies:

  • Flyback converter
  • Push-pull converter
  • Half-bridge converter
  • Full-bridge converter

 

Advantages:

  • Lower Weight
  • Smaller Size
  • Higher Efficiency
  • Lower power dissipation
  • Wide AC input voltage range

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