Manie Serrao
Newbie level 2
I have built a standard voltage follower as a buffer between a triangle wave generator and PWModulator all built using the basic 741 chips and sharing a common single 12v supply. I have aways believed that an op-amp with neg. feedback, terminal 2 (Inv), irrespective of the voltage applied to terminall 3 (non-inv) will always tend to take up the voltage of terminal 3.
My problem is that the input signal to V Follower is 5.3V p-p (+0.7v to +6v) but the output swings between +2v and +6v, perfectly in phase and peaking at 6v simultaneously, irrespective if I connect or disconnect its output from the PWM's input.
Help please,what am I missing here....I would expect there to be a small differential input voltage between terminals 2 & 3 but not 1.3v at its extremes during the 1st and last part of each 4 second cycle
My problem is that the input signal to V Follower is 5.3V p-p (+0.7v to +6v) but the output swings between +2v and +6v, perfectly in phase and peaking at 6v simultaneously, irrespective if I connect or disconnect its output from the PWM's input.
Help please,what am I missing here....I would expect there to be a small differential input voltage between terminals 2 & 3 but not 1.3v at its extremes during the 1st and last part of each 4 second cycle