A

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Q. The necessary condition for oscillation in a Colpitts oscillator is:

  • (A) c2/c1=gm/gi
  • (B) c1/c2=gm/gi
  • (C) c2/c1= gm*gi
  • (D) none of the mentioned

Explanation by: Admin

the condition for sustained oscillation in a colpitts oscillator is c2/c1 = gm/gi. here c1 and c2 are the capacitance in the feedback network, gm is the transconductance of the transistor and gi is the input admittance.

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