Transistor Emitter Feedback Bias

0

If an emitter resistor is added to the base-bias circuit, the result is emitter-feedback bias, as shown in Figure. The idea is to help make base bias more predictable with negative feedback, which negates any attempted change in collector current with an opposing change in base voltage. If the collector current tries to increase, the emitter voltage increases, causing an increase in base voltage because VB = VE + VBE.

Emitter Feedback Bias

This increase in base voltage reduces the voltage across RB, thus reducing the base current and keeping the collector current from increasing. A similar action occurs if the collector current tries to decrease. While this is better for linear circuits than base bias, it is still dependent on βDC and is not as predictable as voltage-divider bias. To calculate IE, you can write Kirchhoff’s voltage law (KVL) around the base circuit.

Emitter Feedback Bias Derivation

Engineering Tutorial Keywords:

  • emitter feedback bias
  • base bias with emitter feedback
  • emitter feedback biasing
  • Emitters feedback bias
  • colector to emitter feedback biasing method
  • what is base bias with emitter feedback
  • explain collector to emitter feed back bias method
  • emitter feedback bias transistor
  • emitter feedback bias circuit
  • feedback bias

No comments

You May Also Like :

Transformer Types

Types of Transformers

A transformer is an extended version of an inductor. The flux that is created inside the inductor is used here to induce voltages at other ...