Propeller Head Plaza

Posted by kurt s (A) on July 01, 2003 at 22:29:04

In Reply to: Re: I fixed a bias problem in my Mosfet follower (experiment #1 continued) posted by kurt s on July 01, 2003 at 22:02:39:

I think the real part can show a negative feedback or a positive feedback. If for example the feedback is less than +/-90 degrees it can be considered positive feedback (negative resistance in the feedback loop) and if it is more than +/-90 degrees then it is negative feedback (positive resistance). Even with positive feedback it might not oscillate. For oscillation to occur the real feedback times the loop gain must be greater than or equal to one. Again, I don't think the imaginary part plays much of a role in the steady state.