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measurements of the Rout Op-Amp

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laperla

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Rout Op-Amp

How can I measure Rout Op Amp?
I show it in cosmos?
 

Re: Rout Op-Amp

laperla said:
How can I measure Rout Op Amp?
I show it in cosmos?
Click to expand...

put AC current source from output to ground or Iac=1,and run AC analysis.

and plot voltage across frequency. Your voltage is your output impedance.

R=V/I

and I=1, then R=V.
 

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    laperla

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Re: Rout Op-Amp

thanks a lot surianova
I simulated but it wase given me 1 poit

In 0 6 0 ac 1
.ac dec 1 1 1.2g
.probe V(6)

why?

should input source shrt circuit?
 

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