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Proteus Error "too many iterations without convergence"

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Black-Bone

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Hi there, I just would like to design a non inverting summer using OP27,
but when I try to simulate, the error keep display

GMIN step failed,
source failed,
too many iterations without convergence,
Real time simulation failed to stop

How could I solve this problem?
Anyone helps me please?

Thanks

View attachment AD620.zip
 

Re: Proteus Error "too many iterations without convergence"

hii

values of AD620 input voltage is not true
change the values and try again
 

Re: Proteus Error "too many iterations without convergence"

#include said:
hii

values of AD620 input voltage is not true
change the values and try again
Click to expand...

Thanks for your reply, but I do not understand why the values of AD620 is not ture.
I tried to simulate AD620 before, using the same amount of input voltage, and each output is 1.96V which is reasonable.
 

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