Hello all
I am trying to design a comparator circuit using the LM331N op-amp. I found in the datasheet and here also http://www.swarthmore.edu/NatSci/echeeve1/Class/e72/E72L2/Lab2(OpAmp).html how to design it. The problem is when i feed a sinusoidal signal from a function generator 20Hz and 1Vp amplitude i do not get the negative square wave when there is possitive input signal it gives me almost +100mV. i do get the positive square wave +5V when there is negative input signal. Should not i get also -5V when possitve input signal? What am i doing wrong in this design?
Thank you in advance.
I am trying to design a comparator circuit using the LM331N op-amp. I found in the datasheet and here also http://www.swarthmore.edu/NatSci/echeeve1/Class/e72/E72L2/Lab2(OpAmp).html how to design it. The problem is when i feed a sinusoidal signal from a function generator 20Hz and 1Vp amplitude i do not get the negative square wave when there is possitive input signal it gives me almost +100mV. i do get the positive square wave +5V when there is negative input signal. Should not i get also -5V when possitve input signal? What am i doing wrong in this design?
Thank you in advance.
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