JEE Main 202226 Jun, Evening shiftPhysicsEasyElectronic Devices66× since 2002The positive feedback is required by an amplifier to act an oscillator. The feedback here means :AOption A. External input is necessary to sustain ac signal in output.BOption B. A portion of the output power is returned back to the input.COption C. Feedback can be achieved by LR network.DOption D. The base-collector junction must be forward biased.CheckSkip · show solution
