Q-Point (Static Operation Point)

Posted by AJ × 00:40

• The values of the parameters IB, IC and VCE together are termed as ‘operating

point’ or Q ( Quiescent) point of the transistor.

Q-Point

• The intersection of the dc bias value of IB with the dc load line determines the Qpoint.

• It is desirable to have the Q-point centered on the load line. Why?

• When a circuit is designed to have a centered Q-point, the amplifier is said to be

midpoint biased.

• Midpoint biasing allows optimum ac operation of the amplifier.

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