Tried to do this..no knowledge on op amp..will read AOE but just decided to briefly visit an old circuit from a beginner book (Electronic circuits for the evil genius)
Wrong? :
Since feedback is applied, input to inverting is 4.5V which is equal to output voltage
It checks out with multimeter but now when I connect function generator (without turning it on) to capacitor, the input to inverting goes down thereby taking output close to 9V (How to fix?)
To fix, figured needed to add pot on offset pin, it worked at first : the output was close to 4.5v..When I applied sine wave input though, the output was an attenuated sine wave
I was expecting to get (100meg/1k) inverting sine wave gain : guess this should be the answer if input to non inverting is 0V but from the book and spice, seems the right answer should be a square wave
someone please enlighten me
Wrong? :
Since feedback is applied, input to inverting is 4.5V which is equal to output voltage
It checks out with multimeter but now when I connect function generator (without turning it on) to capacitor, the input to inverting goes down thereby taking output close to 9V (How to fix?)
To fix, figured needed to add pot on offset pin, it worked at first : the output was close to 4.5v..When I applied sine wave input though, the output was an attenuated sine wave
I was expecting to get (100meg/1k) inverting sine wave gain : guess this should be the answer if input to non inverting is 0V but from the book and spice, seems the right answer should be a square wave
someone please enlighten me
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