B. R. Sain Member Member since Apr 14, 2012 Last active Apr 14, 2012 Total activities 0 Activity feed Recent contributions #Threads 13 years ago 35d5f740-b4ba-42ae-a30e-d365ce6f8a83 yes, a positive feedback is required. As oscillator does not use any input ideally so it uses positive feedback. When output is...