Consider the following statements: The basic purpose of bias stabilization in a transistor circuit is to
1. Increase the voltage and current gain of the amplifier
2. Make the operating point of the transistor independent of temperature variation of the transistor
3. Make the operating point independent of the replacement of the same type Ge or Si.
Which of the following statements given above are correct?

Correct option is B

1. Statement 2: Make the operating point of the transistor independent of temperature variation of the transistor
· Correct: One of the main goals of bias stabilization is to ensure that the operating point remains stable despite changes in temperature. Temperature variations can affect the transistor's parameters (e.g., β, VBE​), and bias stabilization techniques (e.g., emitter resistor, voltage divider bias) are used to minimize these effects.
2. Statement 3: Make the operating point independent of the replacement of the same type Ge or Si
· Correct: Bias stabilization also ensures that the operating point remains stable even if the transistor is replaced with another of the same type (e.g., Ge or Si). This is because transistor parameters (e.g., β) can vary significantly between devices, and stabilization techniques help mitigate these variations.