Hello John,
Actually, a DC input voltage is present. But, I don't know if it will be ground in AC analysis.If that's grounded then how could I have output (ignore offsets at this moment).
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--- In LTspice@..., John Woodgate <jmw@...> wrote:
In message <kkdb2u+pa7l@...>, dated Sun, 14 Apr 2013, MOHAMMAD A
MAKTOOMI <amaktoomamu@...> writes:
Here, I don't have any such thing (as I wish to vary the frequency of
R2, NOT that of any source), so how do I proceed?
Varying the value of R2, with no other input signal, doesn't produce any
output, unless it's from DC offset voltage or current, or noise. You can
add offset and/or noise voltage and current generators at the input and
run, but only by using .TRAN. Time does not exist in an .AC or AC sweep
analysis.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
