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MP_108842286-Contributor
6-Contributor
December 10, 2024
Solved

amplifier output voltage calculation considering its saturation

  • December 10, 2024
  • 3 replies
  • 941 views

Hello,

 

I would like to get some help from you in order to be able to calculate the output voltage of an integrator OPAMP considering also its saturation.

As it could be seen in my example that I attached, the output voltage will start decreasing from 0V with a negative slope, proportional with time. The negative supply of the OPAMP is -6V, so I would like to know if you could tell me please how can I upgrade my calculation formula with some logic in order to check if the output voltage is still less than -6V, then it should be calculated according to the formula, otherwise it means that the OPAMP is saturated and the output is staying at -6V?

 

Thank you in advance!

 

Best answer by Werner_E

You may also use the "max" function to achieve this:

Werner_E_0-1733853171685.png

 

If limiting values within a certain range occurs more often in your sheet you may consider using a generic function to do the job

Werner_E_0-1733864422981.png
(maybe hidden in a collapsed area at the front or in the non-printable area to the right of the right page border.

Usage in your case could be:

Werner_E_1-1733864497610.png

 

 

 

3 replies

ttokoro
21-Topaz I
ttokoro21-Topaz I
21-Topaz I
December 10, 2024

image.pngimage.png

t.t.
W
Werner_E25-Diamond IAnswer
25-Diamond I
December 10, 2024

You may also use the "max" function to achieve this:

Werner_E_0-1733853171685.png

 

If limiting values within a certain range occurs more often in your sheet you may consider using a generic function to do the job

Werner_E_0-1733864422981.png
(maybe hidden in a collapsed area at the front or in the non-printable area to the right of the right page border.

Usage in your case could be:

Werner_E_1-1733864497610.png

 

 

 

Catalina
CatalinaCommunity Manager
Community Moderator
December 18, 2024

Hi @MP_10884228,

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution or please feel free to detail in a reply what has helped you and mark it as the Accepted Solution. It will help other members who may have the same question.

Of course, if you have more to share on your issue, please pursue the conversation.

Thanks,

Catalina | PTC Community Moderator
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