Explain with circuit diagram, voltage divider biasing method and state its two advantages.

Explain with circuit diagram, voltage divider biasing method and state its two advantages.
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1 Answer

Answer :

image

a)Here R1 and R2 forms voltage divider biasing arrangement.

b)voltage drop across R2 ,forward biases the base emitter junction.

c)so base current flows and hence collector current flows in zero signal condition.

d)RE provides stabilization and RC controls collector current.

It is most widely used method.


Advantages of voltage divider bias

The circuit operation is independent of the transistor current gain β.

· The resistors help to give complete control over the voltage and current.

· The emitter resistor, Re, allows for stability of the gain of the transistor, despite fluctuations in the β values.

· Operating point stabilized against shift in temperature.

· Operating point is almost independent of β variation

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