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Pulse and Digital Circuits by Manmadha Rao G., Rama Sudha K., Venkata Rao K.

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9.3 SELF-BIAS BISTABLE MULTIVIBRATORS

In a self-bias bistable multivibrator, the negative VBB source can be removed by including an emitter resistor RE in the emitter lead. The voltage drop across RE is used to derive the other voltage needed. The resistance RE in a self-bias bistable multivibrator provides stability to the currents and voltages. Here, a self-bias bistable multivibrator in which the ON transistor is driven into saturation is considered. Hence, this circuit is called a saturating bistable multivibrator. One major advantage of a saturating bistable multivibrator is that the power dissipation in devices either when ON or when OFF is so small that transistors with lesser power dissipation capability can be employed. However, its ...

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