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Emitter stabilized bias circuit in Hindi Emitter stabilized bias circuit with example
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Emitter stabilized bias circuit • emitter stabilized configuration • emitter stabilized bias configuration of bjt • A configuration in which a bipolar junction transistor or a BJT is reinforced with an emitter resistor for enhancing its stability with regards to changing ambient temperatures, is called an emitter stabilized bias circuit for BJT. • We have already studied what is DC biasing in transistors, now let's move ahead and learn how an emitter resistor can be used for improving the stability of a BJT DC bias network. • • Applying Emitter Stabilized Bias Circuit • The inclusion of the emitter resistor to the dc bias of the BJT delivers superior stability, meaning, the dc bias currents and voltages continue to be more close to where they had been fixed by the circuit considering external parameters, such as variations in temperature, and transistor beta (gain), • The below given figure shows a transistor DC bias network having an emitter resistor for enforcing an emitter-stabilized biasing on the existing fixed bias configuration of the BJT. • • emitter stabilized circuit not only provide good stability for possible variations in RC but also it make the value of IB almost constant and less dependent of RB. In emitter stabilized biasing circuit, the dc bias network contains an emitter resistor to improve the stability level over the fixed bias configuration. • • A configuration in which a bipolar junction transistor or a BJT is reinforced with an emitter resistor for enhancing its stability with regards to changing ambient temperatures, is called an emitter stabilized bias circuit for BJT. • • Emitter biased circuit generates its own DC bias voltage for the emitter which has a considerable effect on the base current. Any circuit which does generate such bias voltage wlthout actually directly depending on an explicit power supply is a 'self bias'. • • #emitterstabilizedconfiguration
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