Hello Helmut. Thank you for your example. I have no issue in performing transient. Question is how do I simulate this behavior in terms of frequency response.
I want to see how output varies if the rate of variation of R2 keeps on increasing. So, I wish to get a plot Vout vs frequency, where frequency shows the rate of fluctuation of R2.
Higher the frequency on horizontal scale, more rapid the variation in the value of R2.
Any help/suggestions would be greatly appreciated. (This is a part of a paper that I aim at submitting in conference).
PS: I have posted similar question in edaboard to get help in manual analysis of this problem.( more details: )
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--- In LTspice@..., "Helmut" <helmutsennewald@...> wrote:
--- In LTspice@..., "MOHAMMAD A MAKTOOMI" <amaktoomamu@> wrote:
Hi,
In an inverting amplifier(Uploaded File:
),
suppose R2 fluctuates very rapidly (say at 10KHz or even
higher, may be due to some environmental condition).
How do I simulate this behavior, given input is some fixed
dc voltage and opamp is 741 type (I have not attached any
specific opamp model so far, use what you have).
I am basically interested in perhaps frequency response-
I want to see how output varies if rate of variation of R2
keeps increasing.
Hello,
I have uploaded an example with a time-variable resistance.
R=1k+5k*(V(ctrl)+1)
Files > Temp > ni-opamp_.asc
Best regards,
Helmut
