--- In LTspice@..., Tony "ttakeshian" wrote:
I need to model the coupling coefficient of two inductors as
a function of time. I tried using combination of .func and
.param statements to pass a time varying variable to the
SPICE K component without success.
As you have noted, K must be a fixed value. However, LTspice
includes a behavioral inductor that may be a function of time.
I suppose you could set up a T-network of three such inductors
to vary with time the percentage of inductance shared between
each side of the "T" while keeping the total inductance "seen"
from each side fixed (this is what K effectively does). If
you require other than a one-to-one turns ration, you could
add an ideal transformer to one side of the T. -- a.s.
PS: The behavioral inductor is well described in Help and in the
many examples available here in the group archive, both in past
messages and in files posted.
