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Consider the following statements regarding linear power supply : 1. It requires a low-frequency transformer. 2. It requires a high-frequency transformer. 3. The transistor works in the active region. Which of the above statements is/are correct?

Consider the following statements regarding linear power supply : 1. It requires a low-frequency transformer. 2. It requires a high-frequency transformer. 3. The transistor works in the active region. Which of the above statements is/are correct? Correct Answer 1 and 3 only

In power supply regulation, to achieve a linear power supply:

  • A step-down low-frequency transformer is required, as the input voltage and frequency is high.
  • A linear voltage regulator is required such that the voltage across the load does not vary and in this voltage regulator transistor should operate in the active region so that the desired amplification is achieved.


The Block diagram of a linear power supply is as shown:

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