State the biasing network and resistor rg, Physics

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Biasing Network and Resistor RG

Biasing Network (Rs and Cs): JFET is self-biased by using the biasing network Rs-Cs.   Desired  bias  voltage  is  obtained  when  d.c.  component  of  drain  current  flows through  the  source-biasing  resistor  Rs.   While  capacitor  Cs bypasses  the  a.c. component of drain current.

Resistor RG: Resistor RG provides d.c. path for reverse-biasing of gate-source junction

 


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