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STABLITY FACTOR

Introduction
In order to increase stability that is making operating point Q stable, there are two techniques used. Stabilization techniques make use of resistor to bias the transistor circuit.But the stability of bias circuit is affected by changes in temperature.The thermal stability of a bias circuit is estimated by calculating a Stability Factor.
 * 1) Stabilization Techniques
 * 2) Compensation Techniques

Definition
The stability factor (S) may be defined as the ratio of changes in collector current (Ic) with respect to changes in reverse saturation current (Ico).