In transistor oscillators, the requirement of a negative resistance device is satisfied using a varactor diode.

Question

Quizplus · Accepted Answer

In transistor oscillators, the requirement for feedback and phase shift necessary for oscillation is typically satisfied using circuit configurations with inductors, capacitors, and resistors, not a negative resistance device like a varactor diode. Varactor diodes are used for tuning oscillators, not for providing negative resistance.

In Transistor Oscillators, the Requirement of a Negative Resistance Device