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in this circuit when I give both the inputs 0V (i.e. v1=0V , v2 = 0V) , I’m not getting the output 0V because there is some offset voltage ,
Can anyone help me ,how to remove the offset voltage and to get 0v output
in this circuit when I give both the inputs 0V (i.e. v1=0V , v2 = 0V) , I’m not getting the output 0V because there is some offset voltage ,
Can anyone help me ,how to remove the offset voltage and to get 0v output
(Especially old-fashioned) OpAmps show a large offset. If you look at your symbol and circuit, you see two pins (1 and 5) labled off_null. Please have a look at the data sheet how to use these for offset cancellation.
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Also, what is your goal with this circuit?
Using opamps without negative feedback is only going to work as a comparator in real life.
For a tutorial about opamps the good old “opamps for everyone” from Ti is a very good document.
I’m sort of surprised it pops up on Amazon for USD 73
https://www.amazon.com/Op-Amps-Everyone-Bruce-Carter/dp/012811648X
Unless you’re a smelly hard cover book fanatic you may prefer the PDF version.
https://web.mit.edu/6.101/www/reference/op_amps_everyone.pdf
AKA “slod006b”.
https://duckduckgo.com/?q=slod006b
@Malli I advise you to ask this question on an electronics forum or read @paulvdh excellent links
This is not a ngspice problem, but a lack of understanding how opamps work