Related Terminologies

Table of Contents

What is Emitter feedback bias.


Table of Contents

Emitter-feedback bias is the result of adding an emitter resistor to the base-bias circuit, as depicted in Figure. The thought is to assist with making base predisposition more unsurprising with negative criticism, which refutes any endeavored change in authority current with a contradicting change in base voltage. Because VB = VE + VBE, an attempt to increase the collector current results in an increase in the emitter voltage, which in turn raises the base voltage.

The voltage across RB decreases as a result of this increase in base voltage, resulting in a decrease in base current and preventing an increase in collector current. If the collector current attempts to decrease, a similar action takes place. This is superior to base bias for linear circuits, but it still relies on DC and is less predictable than voltage-divider bias. You can write Kirchhoff’s voltage law (KVL) around the base circuit to calculate IE.

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